TY  - JOUR
AU  - Dohčević-Mitrović, Zorana
AU  - Milutinović, Aleksandra N.
AU  - Popović, Dragan A.
AU  - Vasiljević-Radović, Dana
AU  - Popović, Zoran V.
PY  - 2006
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7486
AB  - SiCN and SiC nanopowders were prepared by infrared laser pyrolysis of gaseous precursors starting from a SiH4C2H2NH3 gas mixture. The SiCN powders were composed of an amorphous phase ascribed to the ternary compound with a β-SiC crystalline phase, while the SiC powders consisted of β phase only. The chemical bonding and the local atomic order in the SiCN powders are much more complicated than those of pure SiCSi3N4 mixtures and are strongly dependent on the variation in the initial gas composition. The average grain size was estimated from X-raydiffraction (XRD) patterns and atomic force microscopy (AFM). The UV-VIS transmittance data were used for the bandgap determination in these new materials. Absorption studies suggested that the direct energy gap is more favourable in SiCN and SiC nanoparticles and is blueshifted with regard to the crystalline bulk (SiC). The change of type of band-to-band transition in SiC nanopowders, due to the size effects, and increasing of the energy gap value in SiCN powders with different local atomic arrangement, makes them attractive for blue-UV optoelectronic applications.
PB  - Springer
T2  - Applied Physics A: Materials Science and Processing
T1  - Variable energy gap of SiCN nanopowders
VL  - 84
SP  - 197
EP  - 202
DO  - 10.1007/s00339-006-3598-9
ER  - 

@article{
author = "Dohčević-Mitrović, Zorana and Milutinović, Aleksandra N. and Popović, Dragan A. and Vasiljević-Radović, Dana and Popović, Zoran V.",
year = "2006",
abstract = "SiCN and SiC nanopowders were prepared by infrared laser pyrolysis of gaseous precursors starting from a SiH4C2H2NH3 gas mixture. The SiCN powders were composed of an amorphous phase ascribed to the ternary compound with a β-SiC crystalline phase, while the SiC powders consisted of β phase only. The chemical bonding and the local atomic order in the SiCN powders are much more complicated than those of pure SiCSi3N4 mixtures and are strongly dependent on the variation in the initial gas composition. The average grain size was estimated from X-raydiffraction (XRD) patterns and atomic force microscopy (AFM). The UV-VIS transmittance data were used for the bandgap determination in these new materials. Absorption studies suggested that the direct energy gap is more favourable in SiCN and SiC nanoparticles and is blueshifted with regard to the crystalline bulk (SiC). The change of type of band-to-band transition in SiC nanopowders, due to the size effects, and increasing of the energy gap value in SiCN powders with different local atomic arrangement, makes them attractive for blue-UV optoelectronic applications.",
publisher = "Springer",
journal = "Applied Physics A: Materials Science and Processing",
title = "Variable energy gap of SiCN nanopowders",
volume = "84",
pages = "197-202",
doi = "10.1007/s00339-006-3598-9"
}

Dohčević-Mitrović, Z., Milutinović, A. N., Popović, D. A., Vasiljević-Radović, D.,& Popović, Z. V.. (2006). Variable energy gap of SiCN nanopowders. in Applied Physics A: Materials Science and Processing
Springer., 84, 197-202.
https://doi.org/10.1007/s00339-006-3598-9

Dohčević-Mitrović Z, Milutinović AN, Popović DA, Vasiljević-Radović D, Popović ZV. Variable energy gap of SiCN nanopowders. in Applied Physics A: Materials Science and Processing. 2006;84:197-202.
doi:10.1007/s00339-006-3598-9 .

Dohčević-Mitrović, Zorana, Milutinović, Aleksandra N., Popović, Dragan A., Vasiljević-Radović, Dana, Popović, Zoran V., "Variable energy gap of SiCN nanopowders" in Applied Physics A: Materials Science and Processing, 84 (2006):197-202,
https://doi.org/10.1007/s00339-006-3598-9 . .

TY  - JOUR
AU  - Nikolić, Pantelija M.
AU  - Radulović, Katarina
AU  - Vasiljević-Radović, Dana
AU  - Blagojević, Vladimir D.
AU  - Milosavljević, B.
AU  - Dohčević-Mitrović, Zorana
PY  - 2002
UR  - http://dais.sanu.ac.rs/123456789/283
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3101
AB  - Far infrared reflection spectra, at room and liquid nitrogen temperature, of PbTe single crystals doped with iron are presented. Plasma minima were observed at about 160 cm–1 and 180 cm–1 for room and liquid nitrogen temperature, respectively. Using the reflectivity diagrams and their minima the values of the hole concentrations and their mobility at both temperatures were calculated and compared with galvanomagnetic measurements. All these results indicated that when PbTe is doped with a small concentration of Fe, the hole concentration is reduced by one order of magnitude and the free carrier mobility is larger when compared to pure PbTe.
PB  - Belgrade: Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Far-infrared spectroscopy of PbTe doped with iron
VL  - 67
IS  - 6
SP  - 415
EP  - 423
DO  - 10.2298/JSC0206415N
ER  - 

@article{
author = "Nikolić, Pantelija M. and Radulović, Katarina and Vasiljević-Radović, Dana and Blagojević, Vladimir D. and Milosavljević, B. and Dohčević-Mitrović, Zorana",
year = "2002",
abstract = "Far infrared reflection spectra, at room and liquid nitrogen temperature, of PbTe single crystals doped with iron are presented. Plasma minima were observed at about 160 cm–1 and 180 cm–1 for room and liquid nitrogen temperature, respectively. Using the reflectivity diagrams and their minima the values of the hole concentrations and their mobility at both temperatures were calculated and compared with galvanomagnetic measurements. All these results indicated that when PbTe is doped with a small concentration of Fe, the hole concentration is reduced by one order of magnitude and the free carrier mobility is larger when compared to pure PbTe.",
publisher = "Belgrade: Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Far-infrared spectroscopy of PbTe doped with iron",
volume = "67",
number = "6",
pages = "415-423",
doi = "10.2298/JSC0206415N"
}

Nikolić, P. M., Radulović, K., Vasiljević-Radović, D., Blagojević, V. D., Milosavljević, B.,& Dohčević-Mitrović, Z.. (2002). Far-infrared spectroscopy of PbTe doped with iron. in Journal of the Serbian Chemical Society
Belgrade: Serbian Chemical Society., 67(6), 415-423.
https://doi.org/10.2298/JSC0206415N

Nikolić PM, Radulović K, Vasiljević-Radović D, Blagojević VD, Milosavljević B, Dohčević-Mitrović Z. Far-infrared spectroscopy of PbTe doped with iron. in Journal of the Serbian Chemical Society. 2002;67(6):415-423.
doi:10.2298/JSC0206415N .

Nikolić, Pantelija M., Radulović, Katarina, Vasiljević-Radović, Dana, Blagojević, Vladimir D., Milosavljević, B., Dohčević-Mitrović, Zorana, "Far-infrared spectroscopy of PbTe doped with iron" in Journal of the Serbian Chemical Society, 67, no. 6 (2002):415-423,
https://doi.org/10.2298/JSC0206415N . .