TY  - CONF
AU  - Mladenović, Ivana
AU  - Vuksanović, Marija
AU  - Jovanov, Vladislav
AU  - Radovanović, Željko
AU  - Obradov, Marko
AU  - Nikolić, Nebojša D.
AU  - Vasiljević-Radović, Dana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6778
AB  - Electrochemically deposited nickel coatings from
sulfamate baths without/with lab-made biosilica (SiO2) particles on
the Si(100) substrate were produced. Different galvanostatic
regimes were used: direct current (DC), pulse current (PC), and
pulse-reverse current (PRC) regimes. The phase structure of the
synthesized silica nanoparticles from rice husks was obtained using
XRD and FE-SEM. The MMC-Ni/SiO2 and free Ni coatings were
characterized using FE-SEM, AFM, the micro indentation Vickers
technique, and the drop sessile method in order to investigate
structure, roughness, microhardness, and wettability. The optimal
deposition parameters were obtained with an emphasis on their
potential application as micro mounting coatings.
PB  - Electron Devices Society of the IInstitute of electrical and electronics engineers, inc.
C3  - Proceedings - 33rd International Conference on Microelectronics, MIEL 2023 IEEE, October 16th -18th, 2023, Niš, Serbia
T1  - Metal Matrix Composite Coatings Based on Ni Matrix and Biosilica Filers Obtained from Rice Husks
SP  - 241
EP  - 244
UR  - https://hdl.handle.net/21.15107/rcub_cer_6778
ER  - 

@conference{
author = "Mladenović, Ivana and Vuksanović, Marija and Jovanov, Vladislav and Radovanović, Željko and Obradov, Marko and Nikolić, Nebojša D. and Vasiljević-Radović, Dana",
year = "2023",
abstract = "Electrochemically deposited nickel coatings from
sulfamate baths without/with lab-made biosilica (SiO2) particles on
the Si(100) substrate were produced. Different galvanostatic
regimes were used: direct current (DC), pulse current (PC), and
pulse-reverse current (PRC) regimes. The phase structure of the
synthesized silica nanoparticles from rice husks was obtained using
XRD and FE-SEM. The MMC-Ni/SiO2 and free Ni coatings were
characterized using FE-SEM, AFM, the micro indentation Vickers
technique, and the drop sessile method in order to investigate
structure, roughness, microhardness, and wettability. The optimal
deposition parameters were obtained with an emphasis on their
potential application as micro mounting coatings.",
publisher = "Electron Devices Society of the IInstitute of electrical and electronics engineers, inc.",
journal = "Proceedings - 33rd International Conference on Microelectronics, MIEL 2023 IEEE, October 16th -18th, 2023, Niš, Serbia",
title = "Metal Matrix Composite Coatings Based on Ni Matrix and Biosilica Filers Obtained from Rice Husks",
pages = "241-244",
url = "https://hdl.handle.net/21.15107/rcub_cer_6778"
}

Mladenović, I., Vuksanović, M., Jovanov, V., Radovanović, Ž., Obradov, M., Nikolić, N. D.,& Vasiljević-Radović, D.. (2023). Metal Matrix Composite Coatings Based on Ni Matrix and Biosilica Filers Obtained from Rice Husks. in Proceedings - 33rd International Conference on Microelectronics, MIEL 2023 IEEE, October 16th -18th, 2023, Niš, Serbia
Electron Devices Society of the IInstitute of electrical and electronics engineers, inc.., 241-244.
https://hdl.handle.net/21.15107/rcub_cer_6778

Mladenović I, Vuksanović M, Jovanov V, Radovanović Ž, Obradov M, Nikolić ND, Vasiljević-Radović D. Metal Matrix Composite Coatings Based on Ni Matrix and Biosilica Filers Obtained from Rice Husks. in Proceedings - 33rd International Conference on Microelectronics, MIEL 2023 IEEE, October 16th -18th, 2023, Niš, Serbia. 2023;:241-244.
https://hdl.handle.net/21.15107/rcub_cer_6778 .

Mladenović, Ivana, Vuksanović, Marija, Jovanov, Vladislav, Radovanović, Željko, Obradov, Marko, Nikolić, Nebojša D., Vasiljević-Radović, Dana, "Metal Matrix Composite Coatings Based on Ni Matrix and Biosilica Filers Obtained from Rice Husks" in Proceedings - 33rd International Conference on Microelectronics, MIEL 2023 IEEE, October 16th -18th, 2023, Niš, Serbia (2023):241-244,
https://hdl.handle.net/21.15107/rcub_cer_6778 .

TY  - CONF
AU  - Mladenović, Ivana
AU  - Vuksanović, Marija
AU  - Obradov, Marko
AU  - Jovanov, Vladislav
AU  - Vorkapić, Miloš
AU  - Nikolić, Nebojša D.
AU  - Vasiljević-Radović, Dana
PY  - 2023
UR  - https://www.etran.rs/2023/E_PROCEEDINGS_ICETRAN_2023/IcETRAN23_RADOVI/MOI1.3.pdf
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6253
AB  - In this study, different forms of copper films were
electrodeposited (ED) on silicon wafer, copper and brass foils.
The effect of monocrystalline Si(111) surface cleaning method
and electrodeposition conditions and regimes (frequency in the
pulsating current (PC) regime, an addition of additives in
electrolyte for the constant galvanostatic (DC) regime, and
thickness) on surface morphology and wettability of copper films
was investigated. Optical microscopy equipped with highresolution camera, scanning electron microscopy (SEM) and an
atomic force microscopy (AFM) were used for thin film
characterization and to evaluate wettability of copper films. The
sessile drop method was used for the measurement of water
contact angle. According to the obtained results, choice of
electrolyte used in ED greatly affects wettability of copper films.
It was also shown that copper films electrodeposited from basic
sulfate electrolyte with varying current regimes frequencies,
thicknesses, and cathode types have opposite trends between
roughness parameter values and the water contact angle value.
Structural-morphological changes of a film or bulk solid surface
are key parameters in determining wettability properties and the
analysis of the wetting angle oscillations, but not the only one.
PB  - Society for Electronics, Telecommunications, Computers, Automatic Control and Nuclear Engineering
C3  - Proceedings, X International conference IcETRAN, 05 - 08.06.2023, East Sarajevo, B&H
T1  - Wettability of electrodeposited copper films and correlation with morphology and surface chemistry
VL  - MOI1.3-6
SP  - MOI1.3-1
UR  - https://hdl.handle.net/21.15107/rcub_cer_6253
ER  - 

@conference{
author = "Mladenović, Ivana and Vuksanović, Marija and Obradov, Marko and Jovanov, Vladislav and Vorkapić, Miloš and Nikolić, Nebojša D. and Vasiljević-Radović, Dana",
year = "2023",
abstract = "In this study, different forms of copper films were
electrodeposited (ED) on silicon wafer, copper and brass foils.
The effect of monocrystalline Si(111) surface cleaning method
and electrodeposition conditions and regimes (frequency in the
pulsating current (PC) regime, an addition of additives in
electrolyte for the constant galvanostatic (DC) regime, and
thickness) on surface morphology and wettability of copper films
was investigated. Optical microscopy equipped with highresolution camera, scanning electron microscopy (SEM) and an
atomic force microscopy (AFM) were used for thin film
characterization and to evaluate wettability of copper films. The
sessile drop method was used for the measurement of water
contact angle. According to the obtained results, choice of
electrolyte used in ED greatly affects wettability of copper films.
It was also shown that copper films electrodeposited from basic
sulfate electrolyte with varying current regimes frequencies,
thicknesses, and cathode types have opposite trends between
roughness parameter values and the water contact angle value.
Structural-morphological changes of a film or bulk solid surface
are key parameters in determining wettability properties and the
analysis of the wetting angle oscillations, but not the only one.",
publisher = "Society for Electronics, Telecommunications, Computers, Automatic Control and Nuclear Engineering",
journal = "Proceedings, X International conference IcETRAN, 05 - 08.06.2023, East Sarajevo, B&H",
title = "Wettability of electrodeposited copper films and correlation with morphology and surface chemistry",
volume = "MOI1.3-6",
pages = "MOI1.3-1",
url = "https://hdl.handle.net/21.15107/rcub_cer_6253"
}

Mladenović, I., Vuksanović, M., Obradov, M., Jovanov, V., Vorkapić, M., Nikolić, N. D.,& Vasiljević-Radović, D.. (2023). Wettability of electrodeposited copper films and correlation with morphology and surface chemistry. in Proceedings, X International conference IcETRAN, 05 - 08.06.2023, East Sarajevo, B&H
Society for Electronics, Telecommunications, Computers, Automatic Control and Nuclear Engineering., MOI1.3-6, MOI1.3-1.
https://hdl.handle.net/21.15107/rcub_cer_6253

Mladenović I, Vuksanović M, Obradov M, Jovanov V, Vorkapić M, Nikolić ND, Vasiljević-Radović D. Wettability of electrodeposited copper films and correlation with morphology and surface chemistry. in Proceedings, X International conference IcETRAN, 05 - 08.06.2023, East Sarajevo, B&H. 2023;MOI1.3-6:MOI1.3-1.
https://hdl.handle.net/21.15107/rcub_cer_6253 .

Mladenović, Ivana, Vuksanović, Marija, Obradov, Marko, Jovanov, Vladislav, Vorkapić, Miloš, Nikolić, Nebojša D., Vasiljević-Radović, Dana, "Wettability of electrodeposited copper films and correlation with morphology and surface chemistry" in Proceedings, X International conference IcETRAN, 05 - 08.06.2023, East Sarajevo, B&H, MOI1.3-6 (2023):MOI1.3-1,
https://hdl.handle.net/21.15107/rcub_cer_6253 .

TY  - JOUR
AU  - Jakšić, Jovana
AU  - Milinković, Evgenija
AU  - Cvetanović, Katarina
AU  - Vujošević, Zorana Tokić
AU  - Jovanov, Vladislav
AU  - Mitrović, Aleksandra
AU  - Maslak, Veselin
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7231
AB  - In this study, we conducted a comprehensive investigation of newly synthesized fullerene derivatives developed for potential application in perovskite solar cells (PSCs). We explored three novel dihydrofuran-fused C60 fullerene derivatives (13, 14, and 15) that were specifically designed to enhance solubility and interaction with the substrate, fluorine-doped tin oxide (FTO). A comparative analysis was performed, with reference to the widely used phenyl-C61-butyric acid methyl ester (PCBM) and compound 12, from which 13, 14, and 15 are derived, to assess the impact of sugar units on materials properties. The synthesized compounds demonstrated significant solubility in common organic solvents, a critical factor in their potential application in wet-processed PSCs. Our investigation included electrochemical property analysis, thin film deposition, surface characterization, and electrochemical impedance spectroscopy (EIS). EIS measurements unveiled key insights into charge transfer properties at the electrode/electrolyte interface, making the compounds attractive candidates for electron transport layers (ETLs) in PSCs.
PB  - Royal Society of Chemistry (RSC)
T2  - Physical Chemistry Chemical Physics
T1  - Exploring fullerene derivatives for optoelectronic applications: synthesis and characterization study
VL  - 26
IS  - 1
SP  - 517
EP  - 523
DO  - 10.1039/D3CP04322C
ER  - 

@article{
author = "Jakšić, Jovana and Milinković, Evgenija and Cvetanović, Katarina and Vujošević, Zorana Tokić and Jovanov, Vladislav and Mitrović, Aleksandra and Maslak, Veselin",
year = "2023",
abstract = "In this study, we conducted a comprehensive investigation of newly synthesized fullerene derivatives developed for potential application in perovskite solar cells (PSCs). We explored three novel dihydrofuran-fused C60 fullerene derivatives (13, 14, and 15) that were specifically designed to enhance solubility and interaction with the substrate, fluorine-doped tin oxide (FTO). A comparative analysis was performed, with reference to the widely used phenyl-C61-butyric acid methyl ester (PCBM) and compound 12, from which 13, 14, and 15 are derived, to assess the impact of sugar units on materials properties. The synthesized compounds demonstrated significant solubility in common organic solvents, a critical factor in their potential application in wet-processed PSCs. Our investigation included electrochemical property analysis, thin film deposition, surface characterization, and electrochemical impedance spectroscopy (EIS). EIS measurements unveiled key insights into charge transfer properties at the electrode/electrolyte interface, making the compounds attractive candidates for electron transport layers (ETLs) in PSCs.",
publisher = "Royal Society of Chemistry (RSC)",
journal = "Physical Chemistry Chemical Physics",
title = "Exploring fullerene derivatives for optoelectronic applications: synthesis and characterization study",
volume = "26",
number = "1",
pages = "517-523",
doi = "10.1039/D3CP04322C"
}

Jakšić, J., Milinković, E., Cvetanović, K., Vujošević, Z. T., Jovanov, V., Mitrović, A.,& Maslak, V.. (2023). Exploring fullerene derivatives for optoelectronic applications: synthesis and characterization study. in Physical Chemistry Chemical Physics
Royal Society of Chemistry (RSC)., 26(1), 517-523.
https://doi.org/10.1039/D3CP04322C

Jakšić J, Milinković E, Cvetanović K, Vujošević ZT, Jovanov V, Mitrović A, Maslak V. Exploring fullerene derivatives for optoelectronic applications: synthesis and characterization study. in Physical Chemistry Chemical Physics. 2023;26(1):517-523.
doi:10.1039/D3CP04322C .

Jakšić, Jovana, Milinković, Evgenija, Cvetanović, Katarina, Vujošević, Zorana Tokić, Jovanov, Vladislav, Mitrović, Aleksandra, Maslak, Veselin, "Exploring fullerene derivatives for optoelectronic applications: synthesis and characterization study" in Physical Chemistry Chemical Physics, 26, no. 1 (2023):517-523,
https://doi.org/10.1039/D3CP04322C . .

TY  - JOUR
AU  - Qarony, Wayesh
AU  - Hossain, Mohammad Ismail
AU  - Tamang, Asman
AU  - Jovanov, Vladislav
AU  - Shahiduzzaman, Md.
AU  - Ahamed, Md. Shamim
AU  - Pala, Ragip A.
AU  - Salleo, Alberto
AU  - Tsang, Yuen Hong
AU  - Knipp, Dietmar
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7230
AB  - This study aims to determine the maximum possible energy conversion efficiency of visibly transparent solar cells using the detailed balance limit (also known as the Shockley–Queisser limit) and compare it to the efficiency of traditional single-junction solar cells. To achieve this, a new optical nanoantenna has been designed to absorb incoming light selectively, enhancing the average visible transmission while maintaining high absorption in the infrared and UV regions. The color appearance of the antennas has also been evaluated through colorimetrical characterization. Our findings indicate that it is possible to achieve high average visible transparency and energy conversion efficiency of over 80 and 18%, respectively, by carefully selecting semiconductor materials. Such solar cells are versatile enough to be integrated seamlessly into smart windows, agrivoltaic concepts in open and protected cultivation, mobile devices, and appliances without compromising their appearance or functionality. The dimensions and optics of the proposed antennas and visibly transparent solar cells have been thoroughly discussed.
PB  - American Chemical Society (ACS)
T2  - ACS Photonics
T1  - On the Potential of Optical Nanoantennas for Visibly Transparent Solar Cells
VL  - 10
IS  - 12
SP  - 4205
EP  - 4214
DO  - 10.1021/acsphotonics.3c00932
ER  - 

@article{
author = "Qarony, Wayesh and Hossain, Mohammad Ismail and Tamang, Asman and Jovanov, Vladislav and Shahiduzzaman, Md. and Ahamed, Md. Shamim and Pala, Ragip A. and Salleo, Alberto and Tsang, Yuen Hong and Knipp, Dietmar",
year = "2023",
abstract = "This study aims to determine the maximum possible energy conversion efficiency of visibly transparent solar cells using the detailed balance limit (also known as the Shockley–Queisser limit) and compare it to the efficiency of traditional single-junction solar cells. To achieve this, a new optical nanoantenna has been designed to absorb incoming light selectively, enhancing the average visible transmission while maintaining high absorption in the infrared and UV regions. The color appearance of the antennas has also been evaluated through colorimetrical characterization. Our findings indicate that it is possible to achieve high average visible transparency and energy conversion efficiency of over 80 and 18%, respectively, by carefully selecting semiconductor materials. Such solar cells are versatile enough to be integrated seamlessly into smart windows, agrivoltaic concepts in open and protected cultivation, mobile devices, and appliances without compromising their appearance or functionality. The dimensions and optics of the proposed antennas and visibly transparent solar cells have been thoroughly discussed.",
publisher = "American Chemical Society (ACS)",
journal = "ACS Photonics",
title = "On the Potential of Optical Nanoantennas for Visibly Transparent Solar Cells",
volume = "10",
number = "12",
pages = "4205-4214",
doi = "10.1021/acsphotonics.3c00932"
}

Qarony, W., Hossain, M. I., Tamang, A., Jovanov, V., Shahiduzzaman, Md., Ahamed, Md. S., Pala, R. A., Salleo, A., Tsang, Y. H.,& Knipp, D.. (2023). On the Potential of Optical Nanoantennas for Visibly Transparent Solar Cells. in ACS Photonics
American Chemical Society (ACS)., 10(12), 4205-4214.
https://doi.org/10.1021/acsphotonics.3c00932

Qarony W, Hossain MI, Tamang A, Jovanov V, Shahiduzzaman M, Ahamed MS, Pala RA, Salleo A, Tsang YH, Knipp D. On the Potential of Optical Nanoantennas for Visibly Transparent Solar Cells. in ACS Photonics. 2023;10(12):4205-4214.
doi:10.1021/acsphotonics.3c00932 .

Qarony, Wayesh, Hossain, Mohammad Ismail, Tamang, Asman, Jovanov, Vladislav, Shahiduzzaman, Md., Ahamed, Md. Shamim, Pala, Ragip A., Salleo, Alberto, Tsang, Yuen Hong, Knipp, Dietmar, "On the Potential of Optical Nanoantennas for Visibly Transparent Solar Cells" in ACS Photonics, 10, no. 12 (2023):4205-4214,
https://doi.org/10.1021/acsphotonics.3c00932 . .

TY  - GEN
AU  - Jovanov, Vladislav
AU  - Rašljić-Rafajilović, Milena
AU  - Mladenović, Ivana
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5844
AB  - Ово техничко решење се односи на анализу отвореног угла површине танких филмова након наношења на текстуиране супстрате. Танкослоjне силициjумске соларне ћелиjе се фабрикуjу на текстуираним супстратима да би се повећала апсорпциjа светлости
услед дифракциjе и расипања светлости [1–13]. Међутим, превелика храпавост текстуираних супстрата може довести до поjаве електричних дефеката приликом фабрикациjе
соларних ћелиjа од микрокристалног силициjума [8, 11]. Пошто ориjентациjа раста микрокристалног силициjума зависи од отвореног угла површине на коjу се филм наноси, на
текстуираним супстратима кристални региони расту jедни према другима што на краjу
доводи до поjаве пукотине у филму где долази до заробљавања и рекомбинациjе носилаца
наелектрисања. Ескперименталне студиjе су показале да иако jе на неким текстуираним
супстратима оптичка апсорпциjа светлости већа, остварене електричне карактеристике
фабрикованих соларних ћелиjа су лошиjе управо због поjаве дефеката [8, 11]
1
Ово техничко решење омогућава да се симулира изглед танког филма нанешног на
текстуирани супстрат и затим анализира отворени угао површине унутар филма. Тако
одређени отворени углови су приказани у интерактивном графику где jе могуће тачно
увидети на коjи местима и при коjоj дебљини филма би дошло до поjаве формирања пукотине. Коришћењем овог техничког решења практично се остваруjе виртуелна инспекциjа
танкослоjних соларних ћелиjа без стварне фабрикациjе соларних ћелиjа чиме се значаjно
штеди на лабораториjским ресурсима.
PB  - ИХТМ - Центар за микроелектронске технологиjе, Универзитет у Београду
T1  - Softversko rešenje za analizu otvorenog ugla površine tankih filmova nanešenih na tekstuirane supstrate
UR  - https://hdl.handle.net/21.15107/rcub_cer_5844
ER  - 

@misc{
author = "Jovanov, Vladislav and Rašljić-Rafajilović, Milena and Mladenović, Ivana",
year = "2021",
abstract = "Ово техничко решење се односи на анализу отвореног угла површине танких филмова након наношења на текстуиране супстрате. Танкослоjне силициjумске соларне ћелиjе се фабрикуjу на текстуираним супстратима да би се повећала апсорпциjа светлости
услед дифракциjе и расипања светлости [1–13]. Међутим, превелика храпавост текстуираних супстрата може довести до поjаве електричних дефеката приликом фабрикациjе
соларних ћелиjа од микрокристалног силициjума [8, 11]. Пошто ориjентациjа раста микрокристалног силициjума зависи од отвореног угла површине на коjу се филм наноси, на
текстуираним супстратима кристални региони расту jедни према другима што на краjу
доводи до поjаве пукотине у филму где долази до заробљавања и рекомбинациjе носилаца
наелектрисања. Ескперименталне студиjе су показале да иако jе на неким текстуираним
супстратима оптичка апсорпциjа светлости већа, остварене електричне карактеристике
фабрикованих соларних ћелиjа су лошиjе управо због поjаве дефеката [8, 11]
1
Ово техничко решење омогућава да се симулира изглед танког филма нанешног на
текстуирани супстрат и затим анализира отворени угао површине унутар филма. Тако
одређени отворени углови су приказани у интерактивном графику где jе могуће тачно
увидети на коjи местима и при коjоj дебљини филма би дошло до поjаве формирања пукотине. Коришћењем овог техничког решења практично се остваруjе виртуелна инспекциjа
танкослоjних соларних ћелиjа без стварне фабрикациjе соларних ћелиjа чиме се значаjно
штеди на лабораториjским ресурсима.",
publisher = "ИХТМ - Центар за микроелектронске технологиjе, Универзитет у Београду",
title = "Softversko rešenje za analizu otvorenog ugla površine tankih filmova nanešenih na tekstuirane supstrate",
url = "https://hdl.handle.net/21.15107/rcub_cer_5844"
}

Jovanov, V., Rašljić-Rafajilović, M.,& Mladenović, I.. (2021). Softversko rešenje za analizu otvorenog ugla površine tankih filmova nanešenih na tekstuirane supstrate. 
ИХТМ - Центар за микроелектронске технологиjе, Универзитет у Београду..
https://hdl.handle.net/21.15107/rcub_cer_5844

Jovanov V, Rašljić-Rafajilović M, Mladenović I. Softversko rešenje za analizu otvorenog ugla površine tankih filmova nanešenih na tekstuirane supstrate. 2021;.
https://hdl.handle.net/21.15107/rcub_cer_5844 .

Jovanov, Vladislav, Rašljić-Rafajilović, Milena, Mladenović, Ivana, "Softversko rešenje za analizu otvorenog ugla površine tankih filmova nanešenih na tekstuirane supstrate" (2021),
https://hdl.handle.net/21.15107/rcub_cer_5844 .

TY  - GEN
AU  - Jovanov, Vladislav
AU  - Sarajlić, Milija
AU  - Randjelović, Danijela
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5919
AB  - Ово техничко решење омогућава да се симулира изглед површине танког филма нанешног на текстуирани супстрат. Тако симулирана површина се затим може користити у програму за анализу отвореног угла површине ради анализе потенциjалне поjаве електричних
дефеката, или комерциjалним програмима попут COMSOL и ANSYS Lumerical, ради предвиђања оптичких карактеристика танкослоjних микрокристалних силициjумских ћелиjа
нумеричким путем. Коришћењем овог техничког решења практично се остваруjе виртуелна фабрикациjа танкослоjних соларних ћелиjа чиме се унапређуjе процес оптимизациjе
и значаjно штеди на лабораториjским ресурсима.
PB  - ИХТМ - Центар за микроелектронске технологиjе, Универзитет у Београду
T1  - Softversko rešenje za simulaciju izgleda površine tankih filmova nanešenih na tekstuirane supstrate
UR  - https://hdl.handle.net/21.15107/rcub_cer_5919
ER  - 

@misc{
author = "Jovanov, Vladislav and Sarajlić, Milija and Randjelović, Danijela",
year = "2021",
abstract = "Ово техничко решење омогућава да се симулира изглед површине танког филма нанешног на текстуирани супстрат. Тако симулирана површина се затим може користити у програму за анализу отвореног угла површине ради анализе потенциjалне поjаве електричних
дефеката, или комерциjалним програмима попут COMSOL и ANSYS Lumerical, ради предвиђања оптичких карактеристика танкослоjних микрокристалних силициjумских ћелиjа
нумеричким путем. Коришћењем овог техничког решења практично се остваруjе виртуелна фабрикациjа танкослоjних соларних ћелиjа чиме се унапређуjе процес оптимизациjе
и значаjно штеди на лабораториjским ресурсима.",
publisher = "ИХТМ - Центар за микроелектронске технологиjе, Универзитет у Београду",
title = "Softversko rešenje za simulaciju izgleda površine tankih filmova nanešenih na tekstuirane supstrate",
url = "https://hdl.handle.net/21.15107/rcub_cer_5919"
}

Jovanov, V., Sarajlić, M.,& Randjelović, D.. (2021). Softversko rešenje za simulaciju izgleda površine tankih filmova nanešenih na tekstuirane supstrate. 
ИХТМ - Центар за микроелектронске технологиjе, Универзитет у Београду..
https://hdl.handle.net/21.15107/rcub_cer_5919

Jovanov V, Sarajlić M, Randjelović D. Softversko rešenje za simulaciju izgleda površine tankih filmova nanešenih na tekstuirane supstrate. 2021;.
https://hdl.handle.net/21.15107/rcub_cer_5919 .

Jovanov, Vladislav, Sarajlić, Milija, Randjelović, Danijela, "Softversko rešenje za simulaciju izgleda površine tankih filmova nanešenih na tekstuirane supstrate" (2021),
https://hdl.handle.net/21.15107/rcub_cer_5919 .

TY  - JOUR
AU  - Qarony, Wayesh
AU  - Hossain, Mohammad I.
AU  - Jovanov, Vladislav
AU  - Salleo, Alberto
AU  - Knipp, Dietmar
AU  - Tsang, Yuen Hong
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6836
AB  - Perovskite/silicon tandem solar cells are considered as one of the cost-effective solutions for determining high energy conversion efficiencies. Efficient photon management allows improving light incoupling in solar cells by reducing optical losses. The optics relies upon the interface morphology, and consequently, the growth mechanism of the top cell on the bottom cell is crucial for the implementation of efficient perovskite/silicon tandem solar cells. To describe the interface morphologies of perovskite/silicon tandem solar cells, a three-dimensional surface algorithm is used that allows investigating the perovskite solar cells deposited on the textured crystalline silicon solar cells. We distinguish between two extreme cases in which the film grows only in the direction of the substrate normal or in the direction of the local surface normal. The growth mode has significant influence on the film roughness, the effective thickness of the film, the optics of the solar cell, and
the photovoltaic parameters. The optics is investigated by finite-difference time-domain simulations. The influence of the interface morphology on the photovoltaic parameters is discussed, and guidelines are provided to reach high short-circuit current density and energy conversion efficiency.
PB  - American Chemical Society (ACS)
T2  - ACS Applied Materials and Interfaces
T1  - Influence of Perovskite Interface Morphology on the Photon Management in Perovskite/Silicon Tandem Solar Cells
VL  - 12
IS  - 13
SP  - 15080
EP  - 15086
DO  - 10.1021/acsami.9b21985
ER  - 

@article{
author = "Qarony, Wayesh and Hossain, Mohammad I. and Jovanov, Vladislav and Salleo, Alberto and Knipp, Dietmar and Tsang, Yuen Hong",
year = "2020",
abstract = "Perovskite/silicon tandem solar cells are considered as one of the cost-effective solutions for determining high energy conversion efficiencies. Efficient photon management allows improving light incoupling in solar cells by reducing optical losses. The optics relies upon the interface morphology, and consequently, the growth mechanism of the top cell on the bottom cell is crucial for the implementation of efficient perovskite/silicon tandem solar cells. To describe the interface morphologies of perovskite/silicon tandem solar cells, a three-dimensional surface algorithm is used that allows investigating the perovskite solar cells deposited on the textured crystalline silicon solar cells. We distinguish between two extreme cases in which the film grows only in the direction of the substrate normal or in the direction of the local surface normal. The growth mode has significant influence on the film roughness, the effective thickness of the film, the optics of the solar cell, and
the photovoltaic parameters. The optics is investigated by finite-difference time-domain simulations. The influence of the interface morphology on the photovoltaic parameters is discussed, and guidelines are provided to reach high short-circuit current density and energy conversion efficiency.",
publisher = "American Chemical Society (ACS)",
journal = "ACS Applied Materials and Interfaces",
title = "Influence of Perovskite Interface Morphology on the Photon Management in Perovskite/Silicon Tandem Solar Cells",
volume = "12",
number = "13",
pages = "15080-15086",
doi = "10.1021/acsami.9b21985"
}

Qarony, W., Hossain, M. I., Jovanov, V., Salleo, A., Knipp, D.,& Tsang, Y. H.. (2020). Influence of Perovskite Interface Morphology on the Photon Management in Perovskite/Silicon Tandem Solar Cells. in ACS Applied Materials and Interfaces
American Chemical Society (ACS)., 12(13), 15080-15086.
https://doi.org/10.1021/acsami.9b21985

Qarony W, Hossain MI, Jovanov V, Salleo A, Knipp D, Tsang YH. Influence of Perovskite Interface Morphology on the Photon Management in Perovskite/Silicon Tandem Solar Cells. in ACS Applied Materials and Interfaces. 2020;12(13):15080-15086.
doi:10.1021/acsami.9b21985 .

Qarony, Wayesh, Hossain, Mohammad I., Jovanov, Vladislav, Salleo, Alberto, Knipp, Dietmar, Tsang, Yuen Hong, "Influence of Perovskite Interface Morphology on the Photon Management in Perovskite/Silicon Tandem Solar Cells" in ACS Applied Materials and Interfaces, 12, no. 13 (2020):15080-15086,
https://doi.org/10.1021/acsami.9b21985 . .

TY  - JOUR
AU  - Rana, Debkumar
AU  - Jovanov, Vladislav
AU  - Wagner, Veit
AU  - Materny, Arnulf
AU  - Donfack, Patrice
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6837
AB  - Polymer-fullerene blends based on poly(3-hexylthiophene-2,5-diyl) (P3HT) and phenyl-C61-butyric-acid methyl ester (PCBM) have been extensively studied as promising bulk heterojunction materials for organic semiconductor devices with improved performance. In these donor–acceptor systems where the bulk morphology plays a crucial role, the generation and subsequent decay mechanisms of photoexcitation species are still not completely understood. In this work, we use femtosecond transient absorption spectroscopy to investigate P3HT:PCBM diodes under the influence of applied static electric fields in comparison to P3HT:PCBM thin films. At the same time, we try to present a detailed overview about work already done on these donor–acceptor systems. The excited state dynamics obtained at 638 nm from P3HT:PCBM thin films are found to be similar to those observed earlier in neat P3HT films, while those obtained in the P3HT:PCBM devices are affected by field-induced exciton dissociation, resulting not only in comparatively slower decay dynamics, but also in bimolecular deactivation processes. External electric fields are expected to enhance charge generation in the investigated P3HT:PCBM devices by dissociating excitons and loosely bound intermediate species like polaron pairs (PPs) and charge transfer (CT) excitons, which can already dissociate only due to the intrinsic fields at the donor–acceptor interfaces. Our results clearly establish the formation of PP-like transient species different from CT excitons in the P3HT:PCBM devices as a result of a field-induced diffusion-controlled exciton dissociation process. We find that the loosely bound transient species formed in this way also are reduced in part via a bimolecular annihilation process resulting in charge loss in typical donor–acceptor P3HT:PCBM bulk heterojunction semiconductor devices, which is a rather interesting finding important for a better understanding of the performance of these devices.
PB  - Royal Society of Chemistry
T2  - RSC Advances
T1  - Insights into ultrafast charge-pair dynamics in P3HT:PCBM devices under the influence of static electric fields
VL  - 10
SP  - 42754
EP  - 42764
DO  - 10.1039/D0RA07935A
ER  - 

@article{
author = "Rana, Debkumar and Jovanov, Vladislav and Wagner, Veit and Materny, Arnulf and Donfack, Patrice",
year = "2020",
abstract = "Polymer-fullerene blends based on poly(3-hexylthiophene-2,5-diyl) (P3HT) and phenyl-C61-butyric-acid methyl ester (PCBM) have been extensively studied as promising bulk heterojunction materials for organic semiconductor devices with improved performance. In these donor–acceptor systems where the bulk morphology plays a crucial role, the generation and subsequent decay mechanisms of photoexcitation species are still not completely understood. In this work, we use femtosecond transient absorption spectroscopy to investigate P3HT:PCBM diodes under the influence of applied static electric fields in comparison to P3HT:PCBM thin films. At the same time, we try to present a detailed overview about work already done on these donor–acceptor systems. The excited state dynamics obtained at 638 nm from P3HT:PCBM thin films are found to be similar to those observed earlier in neat P3HT films, while those obtained in the P3HT:PCBM devices are affected by field-induced exciton dissociation, resulting not only in comparatively slower decay dynamics, but also in bimolecular deactivation processes. External electric fields are expected to enhance charge generation in the investigated P3HT:PCBM devices by dissociating excitons and loosely bound intermediate species like polaron pairs (PPs) and charge transfer (CT) excitons, which can already dissociate only due to the intrinsic fields at the donor–acceptor interfaces. Our results clearly establish the formation of PP-like transient species different from CT excitons in the P3HT:PCBM devices as a result of a field-induced diffusion-controlled exciton dissociation process. We find that the loosely bound transient species formed in this way also are reduced in part via a bimolecular annihilation process resulting in charge loss in typical donor–acceptor P3HT:PCBM bulk heterojunction semiconductor devices, which is a rather interesting finding important for a better understanding of the performance of these devices.",
publisher = "Royal Society of Chemistry",
journal = "RSC Advances",
title = "Insights into ultrafast charge-pair dynamics in P3HT:PCBM devices under the influence of static electric fields",
volume = "10",
pages = "42754-42764",
doi = "10.1039/D0RA07935A"
}

Rana, D., Jovanov, V., Wagner, V., Materny, A.,& Donfack, P.. (2020). Insights into ultrafast charge-pair dynamics in P3HT:PCBM devices under the influence of static electric fields. in RSC Advances
Royal Society of Chemistry., 10, 42754-42764.
https://doi.org/10.1039/D0RA07935A

Rana D, Jovanov V, Wagner V, Materny A, Donfack P. Insights into ultrafast charge-pair dynamics in P3HT:PCBM devices under the influence of static electric fields. in RSC Advances. 2020;10:42754-42764.
doi:10.1039/D0RA07935A .

Rana, Debkumar, Jovanov, Vladislav, Wagner, Veit, Materny, Arnulf, Donfack, Patrice, "Insights into ultrafast charge-pair dynamics in P3HT:PCBM devices under the influence of static electric fields" in RSC Advances, 10 (2020):42754-42764,
https://doi.org/10.1039/D0RA07935A . .

TY  - JOUR
AU  - Köhling, Jonas
AU  - Kozel, Volodymyr
AU  - Jovanov, Vladislav
AU  - Pajkert, Romana
AU  - Tverdomed, Sergey N.
AU  - Gridenco, Oleg
AU  - Fugel, Malte
AU  - Grabowsky, Simon
AU  - Röschenthaler, Gerd-Volker
AU  - Wagner, Veit
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6872
AB  - A blue-light emitting material based on a boron complex containing heteroaromatic phosphonate ligand is synthesized and characterized. The Phospho-Fries rearrangement is used in the synthesis route of the ligand as a convenient method of introducing phosphonate groups into phenols. Structural, thermal and photophysical properties of the resulting oxazaborinin phosphonate compound have been characterized. DFT geometry optimizations were studied as well as the spatial position and symmetry of the HOMO and LUMO. Good thermal stability up to 250 °C enables vacuum deposition methods next to solution processing. Combining the work function with the optical band gap from UV-Vis measurements shows that band alignment is possible with standard contact materials. Photoluminescence reveals an emission peak at 428 nm, which is suitable for a blue light-emitter.
PB  - Wiley-VCH
T2  - ChemPhysChem
T1  - Synthesis and Characterization of Oxazaborinin Phosphonate for Blue OLED Emitter Applications
VL  - 20
IS  - 5
SP  - 665
EP  - 671
DO  - 10.1002/cphc.201801087
ER  - 

@article{
author = "Köhling, Jonas and Kozel, Volodymyr and Jovanov, Vladislav and Pajkert, Romana and Tverdomed, Sergey N. and Gridenco, Oleg and Fugel, Malte and Grabowsky, Simon and Röschenthaler, Gerd-Volker and Wagner, Veit",
year = "2019",
abstract = "A blue-light emitting material based on a boron complex containing heteroaromatic phosphonate ligand is synthesized and characterized. The Phospho-Fries rearrangement is used in the synthesis route of the ligand as a convenient method of introducing phosphonate groups into phenols. Structural, thermal and photophysical properties of the resulting oxazaborinin phosphonate compound have been characterized. DFT geometry optimizations were studied as well as the spatial position and symmetry of the HOMO and LUMO. Good thermal stability up to 250 °C enables vacuum deposition methods next to solution processing. Combining the work function with the optical band gap from UV-Vis measurements shows that band alignment is possible with standard contact materials. Photoluminescence reveals an emission peak at 428 nm, which is suitable for a blue light-emitter.",
publisher = "Wiley-VCH",
journal = "ChemPhysChem",
title = "Synthesis and Characterization of Oxazaborinin Phosphonate for Blue OLED Emitter Applications",
volume = "20",
number = "5",
pages = "665-671",
doi = "10.1002/cphc.201801087"
}

Köhling, J., Kozel, V., Jovanov, V., Pajkert, R., Tverdomed, S. N., Gridenco, O., Fugel, M., Grabowsky, S., Röschenthaler, G.,& Wagner, V.. (2019). Synthesis and Characterization of Oxazaborinin Phosphonate for Blue OLED Emitter Applications. in ChemPhysChem
Wiley-VCH., 20(5), 665-671.
https://doi.org/10.1002/cphc.201801087

Köhling J, Kozel V, Jovanov V, Pajkert R, Tverdomed SN, Gridenco O, Fugel M, Grabowsky S, Röschenthaler G, Wagner V. Synthesis and Characterization of Oxazaborinin Phosphonate for Blue OLED Emitter Applications. in ChemPhysChem. 2019;20(5):665-671.
doi:10.1002/cphc.201801087 .

Köhling, Jonas, Kozel, Volodymyr, Jovanov, Vladislav, Pajkert, Romana, Tverdomed, Sergey N., Gridenco, Oleg, Fugel, Malte, Grabowsky, Simon, Röschenthaler, Gerd-Volker, Wagner, Veit, "Synthesis and Characterization of Oxazaborinin Phosphonate for Blue OLED Emitter Applications" in ChemPhysChem, 20, no. 5 (2019):665-671,
https://doi.org/10.1002/cphc.201801087 . .

TY  - JOUR
AU  - Rana, Debkumar
AU  - Donfack, Patrice
AU  - Jovanov, Vladislav
AU  - Wagner, Veit
AU  - Materny, Arnulf
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6871
AB  - The generation and decay mechanisms of polaron pairs in organic semiconductor-based optoelectronic devices under operational conditions are relevant for a better understanding of photophysical processes affecting the device performance, since the possible occurrence of a polaron pair introduces an intermediate step in exciton dissociation into fully separated charge carriers. The role played by static electric fields in polaron-pair dynamics is important but poorly understood or not investigated in detail. In this work, insights into the polaron-pair dynamics in neat poly(3-hexylthiophene-2,5-diyl) (P3HT) thin films and P3HT films sandwiched between electrical contacts with an applied external static electric field are probed using femtosecond pump–probe transient absorption spectroscopy. Asymmetric contacts result in P3HT devices with application-related diode characteristics. Consistent with the electric field-induced dissociation of oppositely charged species, we show that polaron-pair dissociation into charge carriers occurs in the P3HT device more significantly with increasing reverse bias, and that this process follows an initial instantaneous polaron-pair photoabsorption quenching due to a pronounced immediate loss of primary photoexcitation species (hot excitons). Furthermore, we show that the net-electric field present in the P3HT diode (including built-in-potential at 0 V bias) results in a more complex dynamics with new findings as compared to the neat-P3HT thin film case. Indeed, besides polaron pairs directly originating from hot excitons, we experimentally observe polaron-pair formation during exciton dissociation via a field-mediated generation process, resulting in a slower contribution to the overall decay dynamics. Moreover, unlike in the external electric field-free P3HT film, bimolecular annihilation processes clearly appear as an additional loss channel when a field is applied and hence have an impact on carrier generation performance in a working device.
PB  - Royal Society of Chemistry
T2  - Physical Chemistry Chemical Physics
T1  - Ultrafast polaron-pair dynamics in a poly(3-hexylthiophene-2,5-diyl) device influenced by a static electric field: insights into electric-field-related charge loss
VL  - 21
IS  - 38
SP  - 21236
EP  - 21248
DO  - 10.1039/C9CP03736E
ER  - 

@article{
author = "Rana, Debkumar and Donfack, Patrice and Jovanov, Vladislav and Wagner, Veit and Materny, Arnulf",
year = "2019",
abstract = "The generation and decay mechanisms of polaron pairs in organic semiconductor-based optoelectronic devices under operational conditions are relevant for a better understanding of photophysical processes affecting the device performance, since the possible occurrence of a polaron pair introduces an intermediate step in exciton dissociation into fully separated charge carriers. The role played by static electric fields in polaron-pair dynamics is important but poorly understood or not investigated in detail. In this work, insights into the polaron-pair dynamics in neat poly(3-hexylthiophene-2,5-diyl) (P3HT) thin films and P3HT films sandwiched between electrical contacts with an applied external static electric field are probed using femtosecond pump–probe transient absorption spectroscopy. Asymmetric contacts result in P3HT devices with application-related diode characteristics. Consistent with the electric field-induced dissociation of oppositely charged species, we show that polaron-pair dissociation into charge carriers occurs in the P3HT device more significantly with increasing reverse bias, and that this process follows an initial instantaneous polaron-pair photoabsorption quenching due to a pronounced immediate loss of primary photoexcitation species (hot excitons). Furthermore, we show that the net-electric field present in the P3HT diode (including built-in-potential at 0 V bias) results in a more complex dynamics with new findings as compared to the neat-P3HT thin film case. Indeed, besides polaron pairs directly originating from hot excitons, we experimentally observe polaron-pair formation during exciton dissociation via a field-mediated generation process, resulting in a slower contribution to the overall decay dynamics. Moreover, unlike in the external electric field-free P3HT film, bimolecular annihilation processes clearly appear as an additional loss channel when a field is applied and hence have an impact on carrier generation performance in a working device.",
publisher = "Royal Society of Chemistry",
journal = "Physical Chemistry Chemical Physics",
title = "Ultrafast polaron-pair dynamics in a poly(3-hexylthiophene-2,5-diyl) device influenced by a static electric field: insights into electric-field-related charge loss",
volume = "21",
number = "38",
pages = "21236-21248",
doi = "10.1039/C9CP03736E"
}

Rana, D., Donfack, P., Jovanov, V., Wagner, V.,& Materny, A.. (2019). Ultrafast polaron-pair dynamics in a poly(3-hexylthiophene-2,5-diyl) device influenced by a static electric field: insights into electric-field-related charge loss. in Physical Chemistry Chemical Physics
Royal Society of Chemistry., 21(38), 21236-21248.
https://doi.org/10.1039/C9CP03736E

Rana D, Donfack P, Jovanov V, Wagner V, Materny A. Ultrafast polaron-pair dynamics in a poly(3-hexylthiophene-2,5-diyl) device influenced by a static electric field: insights into electric-field-related charge loss. in Physical Chemistry Chemical Physics. 2019;21(38):21236-21248.
doi:10.1039/C9CP03736E .

Rana, Debkumar, Donfack, Patrice, Jovanov, Vladislav, Wagner, Veit, Materny, Arnulf, "Ultrafast polaron-pair dynamics in a poly(3-hexylthiophene-2,5-diyl) device influenced by a static electric field: insights into electric-field-related charge loss" in Physical Chemistry Chemical Physics, 21, no. 38 (2019):21236-21248,
https://doi.org/10.1039/C9CP03736E . .

TY  - JOUR
AU  - Hossain, Mohammad I.
AU  - Qarony, Wayesh
AU  - Jovanov, Vladislav
AU  - Tsang, Yuen H.
AU  - Knipp, Dietmar
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6875
AB  - The perovskite material system allows for the realization of perovskite/silicon tandem solar cells with high energy conversion efficiencies at low cost. To realize such solar cells, the device geometry, the device processing, and the contact materials have to be modified in comparison to single junction perovskite solar cells. In this study, perovskite/silicon tandem solar cells are designed allowing for the generation of short-circuit current densities and energy conversion efficiencies exceeding 20 mA cm−2 and 30%, while using realistic device structures. High short-circuit current densities can be achieved by minimizing reflection losses and optical losses of the contact layers. A hybrid approach is used to investigate the optics by combining finite-difference time-domain simulations with experimental measurements. Details on the nanophotonic design will be provided and discussed.
PB  - Royal Society of Chemistry
T2  - Journal of Materials Chemistry A
T1  - Nanophotonic design of perovskite/silicon tandem solar cells
VL  - 6
IS  - 8
SP  - 3625
EP  - 3633
DO  - 10.1039/C8TA00628H
ER  - 

@article{
author = "Hossain, Mohammad I. and Qarony, Wayesh and Jovanov, Vladislav and Tsang, Yuen H. and Knipp, Dietmar",
year = "2018",
abstract = "The perovskite material system allows for the realization of perovskite/silicon tandem solar cells with high energy conversion efficiencies at low cost. To realize such solar cells, the device geometry, the device processing, and the contact materials have to be modified in comparison to single junction perovskite solar cells. In this study, perovskite/silicon tandem solar cells are designed allowing for the generation of short-circuit current densities and energy conversion efficiencies exceeding 20 mA cm−2 and 30%, while using realistic device structures. High short-circuit current densities can be achieved by minimizing reflection losses and optical losses of the contact layers. A hybrid approach is used to investigate the optics by combining finite-difference time-domain simulations with experimental measurements. Details on the nanophotonic design will be provided and discussed.",
publisher = "Royal Society of Chemistry",
journal = "Journal of Materials Chemistry A",
title = "Nanophotonic design of perovskite/silicon tandem solar cells",
volume = "6",
number = "8",
pages = "3625-3633",
doi = "10.1039/C8TA00628H"
}

Hossain, M. I., Qarony, W., Jovanov, V., Tsang, Y. H.,& Knipp, D.. (2018). Nanophotonic design of perovskite/silicon tandem solar cells. in Journal of Materials Chemistry A
Royal Society of Chemistry., 6(8), 3625-3633.
https://doi.org/10.1039/C8TA00628H

Hossain MI, Qarony W, Jovanov V, Tsang YH, Knipp D. Nanophotonic design of perovskite/silicon tandem solar cells. in Journal of Materials Chemistry A. 2018;6(8):3625-3633.
doi:10.1039/C8TA00628H .

Hossain, Mohammad I., Qarony, Wayesh, Jovanov, Vladislav, Tsang, Yuen H., Knipp, Dietmar, "Nanophotonic design of perovskite/silicon tandem solar cells" in Journal of Materials Chemistry A, 6, no. 8 (2018):3625-3633,
https://doi.org/10.1039/C8TA00628H . .

TY  - JOUR
AU  - Tamang, Asman
AU  - Sai, Hitoshi
AU  - Jovanov, Vladislav
AU  - Matsubara, Koji
AU  - Knipp, Dietmar
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6874
AB  - A new device design of microcrystalline silicon thin-film solar cell allows for approaching the geometric light-trapping limit. The solar cell is based on triangular textured surfaces in combination with optimized front and back contacts with very low optical losses. In comparison to crystalline silicon solar cells with record energy conversion efficiency the material usage of the thin-film solar cells is reduced to 1–2%, while exhibiting the potential to achieve short circuit current densities of more than 80% of their counterparts. The short circuit current density of the thin-film solar cells is approaching the geometric light-trapping limit commonly known as the Yablonovitch limit under perpendicular incidence. The design of the solar cell is described considering the electrical and optical properties of the textured solar cell.
PB  - American Chemical Society (ACS)
T2  - ACS Photonics
T1  - Silicon Thin-Film Solar Cells Approaching the Geometric Light-Trapping Limit: Surface Texture Inspired by Self-Assembly Processes
VL  - 5
IS  - 7
SP  - 2799
EP  - 2806
DO  - 10.1021/acsphotonics.7b01397
ER  - 

@article{
author = "Tamang, Asman and Sai, Hitoshi and Jovanov, Vladislav and Matsubara, Koji and Knipp, Dietmar",
year = "2018",
abstract = "A new device design of microcrystalline silicon thin-film solar cell allows for approaching the geometric light-trapping limit. The solar cell is based on triangular textured surfaces in combination with optimized front and back contacts with very low optical losses. In comparison to crystalline silicon solar cells with record energy conversion efficiency the material usage of the thin-film solar cells is reduced to 1–2%, while exhibiting the potential to achieve short circuit current densities of more than 80% of their counterparts. The short circuit current density of the thin-film solar cells is approaching the geometric light-trapping limit commonly known as the Yablonovitch limit under perpendicular incidence. The design of the solar cell is described considering the electrical and optical properties of the textured solar cell.",
publisher = "American Chemical Society (ACS)",
journal = "ACS Photonics",
title = "Silicon Thin-Film Solar Cells Approaching the Geometric Light-Trapping Limit: Surface Texture Inspired by Self-Assembly Processes",
volume = "5",
number = "7",
pages = "2799-2806",
doi = "10.1021/acsphotonics.7b01397"
}

Tamang, A., Sai, H., Jovanov, V., Matsubara, K.,& Knipp, D.. (2018). Silicon Thin-Film Solar Cells Approaching the Geometric Light-Trapping Limit: Surface Texture Inspired by Self-Assembly Processes. in ACS Photonics
American Chemical Society (ACS)., 5(7), 2799-2806.
https://doi.org/10.1021/acsphotonics.7b01397

Tamang A, Sai H, Jovanov V, Matsubara K, Knipp D. Silicon Thin-Film Solar Cells Approaching the Geometric Light-Trapping Limit: Surface Texture Inspired by Self-Assembly Processes. in ACS Photonics. 2018;5(7):2799-2806.
doi:10.1021/acsphotonics.7b01397 .

Tamang, Asman, Sai, Hitoshi, Jovanov, Vladislav, Matsubara, Koji, Knipp, Dietmar, "Silicon Thin-Film Solar Cells Approaching the Geometric Light-Trapping Limit: Surface Texture Inspired by Self-Assembly Processes" in ACS Photonics, 5, no. 7 (2018):2799-2806,
https://doi.org/10.1021/acsphotonics.7b01397 . .

TY  - JOUR
AU  - Jovanov, Vladislav
AU  - Stiebig, Helmut
AU  - Knipp, Dietmar
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6873
AB  - Vertically integrated color sensors with plasmonic reflectors are realized. The complete color information is detected at each color pixel of the sensor array without using optical filters. The spectral responsivity of the sensor is tuned by the applied electric bias and the design of the plasmonic reflector. By introducing an interlayer between the lossy metal back reflector and the sensor, the reflectivity can be modified over a wide spectral range. The detection principle is demonstrated for a silicon thin film detector prepared on a textured silver back reflector. The sensor can be used for RGB color detection replacing conventional color sensors with optical filters. Combining detectors with different spectral reflectivity of the back reflector allows for the realization of multispectral color sensors covering the visible and the near-infrared spectral range.
PB  - American Chemical Society (ACS)
T2  - ACS Photonics
T1  - Tunable Multispectral Color Sensor with Plasmonic Reflector
VL  - 5
IS  - 2
SP  - 378
EP  - 383
DO  - 10.1021/acsphotonics.7b00402
ER  - 

@article{
author = "Jovanov, Vladislav and Stiebig, Helmut and Knipp, Dietmar",
year = "2018",
abstract = "Vertically integrated color sensors with plasmonic reflectors are realized. The complete color information is detected at each color pixel of the sensor array without using optical filters. The spectral responsivity of the sensor is tuned by the applied electric bias and the design of the plasmonic reflector. By introducing an interlayer between the lossy metal back reflector and the sensor, the reflectivity can be modified over a wide spectral range. The detection principle is demonstrated for a silicon thin film detector prepared on a textured silver back reflector. The sensor can be used for RGB color detection replacing conventional color sensors with optical filters. Combining detectors with different spectral reflectivity of the back reflector allows for the realization of multispectral color sensors covering the visible and the near-infrared spectral range.",
publisher = "American Chemical Society (ACS)",
journal = "ACS Photonics",
title = "Tunable Multispectral Color Sensor with Plasmonic Reflector",
volume = "5",
number = "2",
pages = "378-383",
doi = "10.1021/acsphotonics.7b00402"
}

Jovanov, V., Stiebig, H.,& Knipp, D.. (2018). Tunable Multispectral Color Sensor with Plasmonic Reflector. in ACS Photonics
American Chemical Society (ACS)., 5(2), 378-383.
https://doi.org/10.1021/acsphotonics.7b00402

Jovanov V, Stiebig H, Knipp D. Tunable Multispectral Color Sensor with Plasmonic Reflector. in ACS Photonics. 2018;5(2):378-383.
doi:10.1021/acsphotonics.7b00402 .

Jovanov, Vladislav, Stiebig, Helmut, Knipp, Dietmar, "Tunable Multispectral Color Sensor with Plasmonic Reflector" in ACS Photonics, 5, no. 2 (2018):378-383,
https://doi.org/10.1021/acsphotonics.7b00402 . .

TY  - JOUR
AU  - Gruber, Mathias
AU  - Muller, Arne
AU  - Jovanov, Vladislav
AU  - Walter, Manfred J.
AU  - Veig, Wag
PY  - 2017
UR  - https://ieeexplore.ieee.org/document/7922487
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6474
AB  - Metal-mesh based electrode systems are a highly conductive, versatile, and inexpensive alternative to ITO-electrodes for organic photovoltaic (OPV) cells. However, they do not offer full surface conductivity and are, therefore, usually combined with an additional conductive layer (e.g. PEDOT:PSS), which enables lateral charge-transport in the area in between the metal tracks. The sheet conductivity of this additional lateral conductive layer (LCL) needs to be carefully tuned with respect to the distance of the metal tracks to reduce short circuit current (Jsc) losses and additional series resistance due to resistive losses in the LCL material. Usually, this is done via electrical simulation or via analysis of IV-measurements of a large number of devices with different LCL sheet conductivities. Here, we present the light-biased light-beam-induced-current (LB-LBIC) measurement technique as a direct way to visualize current collection losses due to PEDOT:PSS sheet resistance in metal mesh/bus bar based OPV cells. We demonstrate that with LB-LBIC we are not only able to visualize and optimize lateral charge extraction under real-device operation conditions in OPV cells based on a high-resolution metal mesh but can measure the PEDOT:PSS sheet resistance in operating OPV devices as well.
PB  - Institute of Electrical and Electronics Engineers (IEEE)
T2  - IEEE Journal of Photovoltaics
T1  - Direct Visualization of Charge-Extraction in Metal-Mesh Based OPV Cells by Light-Biased LBIC
VL  - 7
IS  - 4
SP  - 1042
EP  - 1049
DO  - 10.1109/JPHOTOV.2017.2699230
ER  - 

@article{
author = "Gruber, Mathias and Muller, Arne and Jovanov, Vladislav and Walter, Manfred J. and Veig, Wag",
year = "2017",
abstract = "Metal-mesh based electrode systems are a highly conductive, versatile, and inexpensive alternative to ITO-electrodes for organic photovoltaic (OPV) cells. However, they do not offer full surface conductivity and are, therefore, usually combined with an additional conductive layer (e.g. PEDOT:PSS), which enables lateral charge-transport in the area in between the metal tracks. The sheet conductivity of this additional lateral conductive layer (LCL) needs to be carefully tuned with respect to the distance of the metal tracks to reduce short circuit current (Jsc) losses and additional series resistance due to resistive losses in the LCL material. Usually, this is done via electrical simulation or via analysis of IV-measurements of a large number of devices with different LCL sheet conductivities. Here, we present the light-biased light-beam-induced-current (LB-LBIC) measurement technique as a direct way to visualize current collection losses due to PEDOT:PSS sheet resistance in metal mesh/bus bar based OPV cells. We demonstrate that with LB-LBIC we are not only able to visualize and optimize lateral charge extraction under real-device operation conditions in OPV cells based on a high-resolution metal mesh but can measure the PEDOT:PSS sheet resistance in operating OPV devices as well.",
publisher = "Institute of Electrical and Electronics Engineers (IEEE)",
journal = "IEEE Journal of Photovoltaics",
title = "Direct Visualization of Charge-Extraction in Metal-Mesh Based OPV Cells by Light-Biased LBIC",
volume = "7",
number = "4",
pages = "1042-1049",
doi = "10.1109/JPHOTOV.2017.2699230"
}

Gruber, M., Muller, A., Jovanov, V., Walter, M. J.,& Veig, W.. (2017). Direct Visualization of Charge-Extraction in Metal-Mesh Based OPV Cells by Light-Biased LBIC. in IEEE Journal of Photovoltaics
Institute of Electrical and Electronics Engineers (IEEE)., 7(4), 1042-1049.
https://doi.org/10.1109/JPHOTOV.2017.2699230

Gruber M, Muller A, Jovanov V, Walter MJ, Veig W. Direct Visualization of Charge-Extraction in Metal-Mesh Based OPV Cells by Light-Biased LBIC. in IEEE Journal of Photovoltaics. 2017;7(4):1042-1049.
doi:10.1109/JPHOTOV.2017.2699230 .

Gruber, Mathias, Muller, Arne, Jovanov, Vladislav, Walter, Manfred J., Veig, Wag, "Direct Visualization of Charge-Extraction in Metal-Mesh Based OPV Cells by Light-Biased LBIC" in IEEE Journal of Photovoltaics, 7, no. 4 (2017):1042-1049,
https://doi.org/10.1109/JPHOTOV.2017.2699230 . .

TY  - JOUR
AU  - Jovanov, Vladislav
AU  - Shrestha, Shailesh
AU  - Hüpkes, Jürgen
AU  - Ermes, Markus
AU  - Bittkau, Karsten
AU  - Knipp, Dietmar
PY  - 2014
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6876
AB  - The influence of film formation on light-trapping properties of silicon thin-film solar cells prepared on randomly textured substrates was studied. Realistic interface morphologies were calculated with a three-dimensional (3D) surface coverage algorithm using the measured substrate morphology and nominal film thicknesses of the individual layers as input parameters. Calculated interface morphologies were used in finite-difference time-domain simulations to determine the quantum efficiency and absorption in the individual layers of the thin-film solar cells. The investigation shows that a realistic description of interface morphologies is required to accurately predict the light-trapping properties of randomly textured silicon thin-film solar cells.
PB  - The Japan Society of Applied Physics
T2  - Applied Physics Express
T1  - Influence of film formation on light-trapping properties of randomly textured silicon thin-film solar cells
VL  - 7
IS  - 8
SP  - 082301
DO  - 10.7567/APEX.7.082301
ER  - 

@article{
author = "Jovanov, Vladislav and Shrestha, Shailesh and Hüpkes, Jürgen and Ermes, Markus and Bittkau, Karsten and Knipp, Dietmar",
year = "2014",
abstract = "The influence of film formation on light-trapping properties of silicon thin-film solar cells prepared on randomly textured substrates was studied. Realistic interface morphologies were calculated with a three-dimensional (3D) surface coverage algorithm using the measured substrate morphology and nominal film thicknesses of the individual layers as input parameters. Calculated interface morphologies were used in finite-difference time-domain simulations to determine the quantum efficiency and absorption in the individual layers of the thin-film solar cells. The investigation shows that a realistic description of interface morphologies is required to accurately predict the light-trapping properties of randomly textured silicon thin-film solar cells.",
publisher = "The Japan Society of Applied Physics",
journal = "Applied Physics Express",
title = "Influence of film formation on light-trapping properties of randomly textured silicon thin-film solar cells",
volume = "7",
number = "8",
pages = "082301",
doi = "10.7567/APEX.7.082301"
}

Jovanov, V., Shrestha, S., Hüpkes, J., Ermes, M., Bittkau, K.,& Knipp, D.. (2014). Influence of film formation on light-trapping properties of randomly textured silicon thin-film solar cells. in Applied Physics Express
The Japan Society of Applied Physics., 7(8), 082301.
https://doi.org/10.7567/APEX.7.082301

Jovanov V, Shrestha S, Hüpkes J, Ermes M, Bittkau K, Knipp D. Influence of film formation on light-trapping properties of randomly textured silicon thin-film solar cells. in Applied Physics Express. 2014;7(8):082301.
doi:10.7567/APEX.7.082301 .

Jovanov, Vladislav, Shrestha, Shailesh, Hüpkes, Jürgen, Ermes, Markus, Bittkau, Karsten, Knipp, Dietmar, "Influence of film formation on light-trapping properties of randomly textured silicon thin-film solar cells" in Applied Physics Express, 7, no. 8 (2014):082301,
https://doi.org/10.7567/APEX.7.082301 . .

TY  - CONF
AU  - Randjelović, Danijela
AU  - Jovanov, Vladislav
AU  - Lazić, Žarko
AU  - Đurić, Zoran G.
AU  - Matic, A.
PY  - 2008
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/381
AB  - This paper presents a simple model of MEMS thermopile based vacuum detector and experimental results obtained for sensors designed and fabricated at IHTM-IMTM. Sensors contain two thermopiles, each with 30 multilayer p(+)Si/Al thermocouples and p(+)Si or Al heater. Thermal isolating membrane has sandwich structure consisting of sputtered SiO2 and residual n-Si layer. Dependence of output thermopile voltage on pressure was measured for sensors with different membrane thickness. Tests were performed in pressure range (10(-3)-10(5)) Pa. Experimental results were compared with theoretical predictions.
PB  - Institute of Electrical and Electronics Engineers Inc.
C3  - 26th International Conference on Microelectronics, Vols 1 and 2, Proceedings
T1  - Vacuum MEMS sensor based on thermopiles - Simple model and experimental results
SP  - 367
EP  - 370
DO  - 10.1109/ICMEL.2008.4559298
ER  - 

@conference{
author = "Randjelović, Danijela and Jovanov, Vladislav and Lazić, Žarko and Đurić, Zoran G. and Matic, A.",
year = "2008",
abstract = "This paper presents a simple model of MEMS thermopile based vacuum detector and experimental results obtained for sensors designed and fabricated at IHTM-IMTM. Sensors contain two thermopiles, each with 30 multilayer p(+)Si/Al thermocouples and p(+)Si or Al heater. Thermal isolating membrane has sandwich structure consisting of sputtered SiO2 and residual n-Si layer. Dependence of output thermopile voltage on pressure was measured for sensors with different membrane thickness. Tests were performed in pressure range (10(-3)-10(5)) Pa. Experimental results were compared with theoretical predictions.",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
journal = "26th International Conference on Microelectronics, Vols 1 and 2, Proceedings",
title = "Vacuum MEMS sensor based on thermopiles - Simple model and experimental results",
pages = "367-370",
doi = "10.1109/ICMEL.2008.4559298"
}

Randjelović, D., Jovanov, V., Lazić, Ž., Đurić, Z. G.,& Matic, A.. (2008). Vacuum MEMS sensor based on thermopiles - Simple model and experimental results. in 26th International Conference on Microelectronics, Vols 1 and 2, Proceedings
Institute of Electrical and Electronics Engineers Inc.., 367-370.
https://doi.org/10.1109/ICMEL.2008.4559298

Randjelović D, Jovanov V, Lazić Ž, Đurić ZG, Matic A. Vacuum MEMS sensor based on thermopiles - Simple model and experimental results. in 26th International Conference on Microelectronics, Vols 1 and 2, Proceedings. 2008;:367-370.
doi:10.1109/ICMEL.2008.4559298 .

Randjelović, Danijela, Jovanov, Vladislav, Lazić, Žarko, Đurić, Zoran G., Matic, A., "Vacuum MEMS sensor based on thermopiles - Simple model and experimental results" in 26th International Conference on Microelectronics, Vols 1 and 2, Proceedings (2008):367-370,
https://doi.org/10.1109/ICMEL.2008.4559298 . .