Dominant role of surface states in photoexcited carrier dynamics in CdSe nanocrystalline films prepared by chemical deposition
- 9 October 2000
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 77 (15), 2352-2354
- https://doi.org/10.1063/1.1317536
Abstract
We report on ultrafast carrier dynamics in nanocrystalline CdSe thin films prepared by chemical solution deposition. The photoluminescence and transient absorption dynamics have spectrally dependent decay faster at shorter wavelengths. The spectral behavior of the decay rates in samples with different nanocrystal sizes and the sensitivity of the dynamics on the surface modification indicate the dominant role of the surface states in the photoluminescence.Keywords
This publication has 7 references indexed in Scilit:
- Temperature study of trap-related photoluminescence decay in CdSxSe1−x nanocrystals in glassJournal of Applied Physics, 2000
- Tailoring of nanocrystal sizes in CdSe films prepared by chemical depositionJournal of Crystal Growth, 2000
- Light-controlled growth of CdSe nanocrystalline films prepared by chemical depositionMaterials Science and Engineering B, 2000
- Quantum information in semiconductor-based nanostructuresPhysica B: Condensed Matter, 1999
- Femtosecond investigation of charge carrier dynamics in CdSe nanocluster filmsThe Journal of Chemical Physics, 1997
- Quantum size effects in the study of chemical solution deposition mechanisms of semiconductor filmsThe Journal of Physical Chemistry, 1994
- A theoretical study of the influence of the surface on the electronic structure of CdSe nanoclustersThe Journal of Chemical Physics, 1994