Time-Resolved Luminescence of TiO2 Powders with Different Crystal Structures
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概要
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The dynamics of photoexcited carriers in standard TiO2 photocatalytic powders has been studied by investigating the time decay and temperature dependence of the photoluminescence. A biexponential decay curve in a time-resolved signal suggests that there are different formation processes of the self-trapped exciton states. The peak position of the luminescence spectrum shifted to a higher energy at room temperature. On the basis of these experimental results, we propose a relaxation model of photoexcited carriers.
- 2007-07-15
著者
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Iijima Koji
Department Of Biology Faculty Of Education Utsunomiya University
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KUNUGITA Hideyuki
Department of Applied Physics,University,of Tokyo
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Ema Kazuhiro
Department Of Applied Physics Faculty Of Engineering University Of Tokyo
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Harada Naomi
Department Of Anesthesiology And Reanimatology Gunma University School Of Medicine
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Ichikawa Noriya
Department Of Physics Sophia University
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Sakama Hiroshi
Department Of Applied Physics The University Of Tokyo
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Iijima Koji
Department of Physics, Sophia University, Tokyo 102-8554, Japan
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Goto Masako
Department of Physics, Sophia University, Tokyo 102-8554, Japan
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Harada Naomi
Department of Physics, Sophia University, Tokyo 102-8554, Japan
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