We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Electron structure of TiO<sub>2</sub> composite films with noble metal nanoparticles.
- Authors
Busko, T. O.; Kulish, M. P.; Dmytrenko, O. P.; Vityuk, N. V.; Eremenko, A. M.
- Abstract
Thin nanocrystalline films of TiO2, TiO2/ZrO2, TiO2/ZrO2/SiO2, TiO2/ZrO2/SiO2/Ag and TiO2/ZrO2/SiO2/Au were prepared using the sol-gel synthesis method. In this paper, we determined the bandgap for direct and indirect band-to-band transitions. Optical conductivity of the films was determined using the spectral ellipsometry method. Depending on the nanocomposite composition, optical conductivity is of different character due to light absorption caused by the presence of the structure intrinsic defects: oxygen vacancies (F2+, F, and F+ centers), Ti3+ ions and interstitial Ti atoms. Rearrangement of the electron spectrum in these thin films due to the aforementioned defects can improve photocatalytic activity in the UV and visible spectral ranges.
- Subjects
TITANIUM dioxide films; ELECTRONIC structure; METALLIC composites; NANOCRYSTALS; METALLIC thin films; NANOPARTICLE synthesis
- Publication
Semiconductor Physics, Quantum Electronics & Optoelectronics, 2014, Vol 17, Issue 1, p67
- ISSN
1560-8034
- Publication type
Article