期刊
APPLIED PHYSICS LETTERS
卷 100, 期 24, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4729382
关键词
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资金
- Swedish Science Council
- Knut and Alice Wallenberg Foundation
- Crafoord foundation
- Swedish Energy Agency
We study changes in ultrafast transient absorption due to photodegradation of quantum dots attached to ZnO nanowire. The time-resolved measurements reveal impact of photodegradation on three distinct kinetic components present in transient absorption tau similar to 7 ps, 80 ps, and 7.5 ns). In addition, we observe superlinear dependence of photodegradation rate on concentration of excited electrons. The data are used to evaluate the mean electron back-recombination time of similar to 1 mu s. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4729382]
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