Titanium overlayers on TiO2(110) |
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| Affiliation: | 1. Institute for Interdisciplinary Research on Bio-Nano-Sciences, Babeș – Bolyai University, Treboniu Laurian 42, RO–400271 Cluj-Napoca, Romania;2. Department of Applied and Environmental Chemistry, University of Szeged, Rerrich tér 1, HU-6720 Szeged, Hungary;3. Institute of Environmental Science and Technology, University of Szeged, Tisza Lajos krt. 103, HU-6720 Szeged, Hungary;4. Faculty of Chemistry and Chemical Engineering, Babeș-Bolyai University, Arany János 11, RO-400028 Cluj-Napoca, Romania;5. Faculty of Physics, Babeș–Bolyai University, M. Kogălniceanu 1, RO–400084 Cluj-Napoca, Romania;1. School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China;2. Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, Wuxi 214122, China;1. The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, China;2. Institute of Electron Device & Application, Hangzhou Dianzi University, Hangzhou 310018, China;1. College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211800, PR China;2. College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China;1. Research Center of Materials Science, Beijing Institute of Technology, Beijing 100081, China;2. Beijing Spacecrafts, Beijing 100094, China |
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| Abstract: | Non-stoichiometric, Ti-rich TiO2(110) surfaces were prepared by evaporation of Ti on stoichiometric TiO2(110). Changes in the spectra of core levels, valence bands, Auger emissions, electron energy losses, conductivities and work functions were investigated during overlayer formation in the monolayer range and during subsequent annealing of non-stoichiometric surfaces at high temperatures and high oxygen partial pressures. These annealing procedures make it possible to restore the ideal stoichiometry of TiO2(110). The results are discussed quantitatively by calculating concentrations of (sub)surface intrinsic defects in a space-charge layer model. |
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