Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9566920 | Applied Surface Science | 2005 | 5 Pages |
Abstract
Several models of UV laser-induced darkening of titanium-oxide wet gels are considered, which fit well to the recently obtained experimental data on the darkening kinetics. They reveal a high initial quantum yield of the light-induced charge separation and the existence of a 10% limitation in the number density of the trapped electrons, as compared to the number density of possible traps. This limitation is attributed to the internal photo-effect, the recombination of trapped electrons with the fast holes and the interaction of newly created free electrons with the already trapped electrons.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
N. Bityurin, A.I. Kuznetsov, A. Kanaev,