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Photoelectrochemical microscopy of oxide films on metals: Ti/TiO2 interface

Samo za registrovane korisnike
1988
Autori
Kozlowski, Mark R.
Tyler, Paul S.
Smyrl, William H.
Atanasoski, Radoslav T.
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentu
Apstrakt
Thin electrochemically grown oxide films on polycrystalline titanium substrates were examined by photoelectrochemical and electron diffraction techniques. Photoelectrochemical microscopy, based on illumination by a focused laser beam, was used to measure the local photoresponse of the oxide films. For oxide films grown slowly (1 nm/h)if, by ramping the electrode potential at 0.1 mV/s, the oxide photoresponse was found to map the grain structure of the underlying substrate. As the oxide growth rate was increased the photoresponse became more homogeneous and the average photocurrent decreased. The photoresponse heterogeneities were associated with variations in the structure of the oxide film. Electron diffraction studies showed that for slowly grown films, an ordered oxide structure was present with a preferential growth direction of [110] occurring on some substrate grains. As the oxide growth rate was increased the film structure became more homogeneous and the average oxide crystalli...ne size decreased. The decrease in oxide crystallinity with increase in oxide growth rate was also observed in photospectroscopy measurements as a loss of the 3.7 eV direct bandgap. For all oxide films studied here, rutile was the only identifiable phase.

Ključne reči:
oxide films / Photoelectrochemical microscopy / Electrochemistry / oxide growth / photoresponse
Izvor:
Surface Science, 1988, 194, 3, 505-530
Izdavač:
  • Elsevier
Projekti:
  • DOE, Agreement No. DOE/DE-FG02-84E~,45173
  • Yugoslav-American Fund for Scientific Cooperation, DOE Grant No. 675.

DOI: 10.1016/0039-6028(88)90866-7

ISSN: 0039-6028

Scopus: 2-s2.0-0000757804
[ Google Scholar ]
87
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/4217
Kolekcije
  • Radovi istraživača / Researchers' publications
Institucija
IHTM
TY  - JOUR
AU  - Kozlowski, Mark R.
AU  - Tyler, Paul S.
AU  - Smyrl, William H.
AU  - Atanasoski, Radoslav T.
PY  - 1988
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4217
AB  - Thin electrochemically grown oxide films on polycrystalline titanium substrates were examined by photoelectrochemical and electron diffraction techniques. Photoelectrochemical microscopy, based on illumination by a focused laser beam, was used to measure the local photoresponse of the oxide films. For oxide films grown slowly (1 nm/h)if, by ramping the electrode potential at 0.1 mV/s, the oxide photoresponse was found to map the grain structure of the underlying substrate. As the oxide growth rate was increased the photoresponse became more homogeneous and the average photocurrent decreased. The photoresponse heterogeneities were associated with variations in the structure of the oxide film. Electron diffraction studies showed that for slowly grown films, an ordered oxide structure was present with a preferential growth direction of [110] occurring on some substrate grains. As the oxide growth rate was increased the film structure became more homogeneous and the average oxide crystalline size decreased. The decrease in oxide crystallinity with increase in oxide growth rate was also observed in photospectroscopy measurements as a loss of the 3.7 eV direct bandgap. For all oxide films studied here, rutile was the only identifiable phase.
PB  - Elsevier
T2  - Surface Science
T1  - Photoelectrochemical microscopy of oxide films on metals: Ti/TiO2 interface
VL  - 194
IS  - 3
SP  - 505
EP  - 530
DO  - 10.1016/0039-6028(88)90866-7
ER  - 
@article{
author = "Kozlowski, Mark R. and Tyler, Paul S. and Smyrl, William H. and Atanasoski, Radoslav T.",
year = "1988",
url = "https://cer.ihtm.bg.ac.rs/handle/123456789/4217",
abstract = "Thin electrochemically grown oxide films on polycrystalline titanium substrates were examined by photoelectrochemical and electron diffraction techniques. Photoelectrochemical microscopy, based on illumination by a focused laser beam, was used to measure the local photoresponse of the oxide films. For oxide films grown slowly (1 nm/h)if, by ramping the electrode potential at 0.1 mV/s, the oxide photoresponse was found to map the grain structure of the underlying substrate. As the oxide growth rate was increased the photoresponse became more homogeneous and the average photocurrent decreased. The photoresponse heterogeneities were associated with variations in the structure of the oxide film. Electron diffraction studies showed that for slowly grown films, an ordered oxide structure was present with a preferential growth direction of [110] occurring on some substrate grains. As the oxide growth rate was increased the film structure became more homogeneous and the average oxide crystalline size decreased. The decrease in oxide crystallinity with increase in oxide growth rate was also observed in photospectroscopy measurements as a loss of the 3.7 eV direct bandgap. For all oxide films studied here, rutile was the only identifiable phase.",
publisher = "Elsevier",
journal = "Surface Science",
title = "Photoelectrochemical microscopy of oxide films on metals: Ti/TiO2 interface",
volume = "194",
number = "3",
pages = "505-530",
doi = "10.1016/0039-6028(88)90866-7"
}
Kozlowski MR, Tyler PS, Smyrl WH, Atanasoski RT. Photoelectrochemical microscopy of oxide films on metals: Ti/TiO2 interface. Surface Science. 1988;194(3):505-530
Kozlowski, M. R., Tyler, P. S., Smyrl, W. H.,& Atanasoski, R. T. (1988). Photoelectrochemical microscopy of oxide films on metals: Ti/TiO2 interface.
Surface ScienceElsevier., 194(3), 505-530.
https://doi.org/10.1016/0039-6028(88)90866-7
Kozlowski Mark R., Tyler Paul S., Smyrl William H., Atanasoski Radoslav T., "Photoelectrochemical microscopy of oxide films on metals: Ti/TiO2 interface" 194, no. 3 (1988):505-530,
https://doi.org/10.1016/0039-6028(88)90866-7 .

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