Influence of oxygen vacancies on optical properties of anatase TiO2 thin films |
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| Authors: | Koji Iijima Masako Goto Shogo Enomoto Hideyuki Kunugita Kazuhiro Ema Masanori Tsukamoto Noriya Ichikawa Hiroshi Sakama |
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| Institution: | 1. Departamento de Física de Materiales, Universidad Autónoma de Madrid, 28049 Madrid, Spain;2. Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Cientificas, 28049 Madrid, Spain;3. Departamento de Física de Materiales, Universidad Autónoma de Madrid, 28049 Madrid, Spain |
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| Abstract: | This paper presents an investigation into the relaxation process of photo-excited carriers in anatase TiO2 thin films, in which the concentration of oxygen vacancy is controlled by annealing at various temperatures in an oxygen atmosphere. The influence of oxygen vacancies on absorption spectra, photoluminescence (PL) spectra, and PL decay dynamics are discussed. |
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