期刊
APPLIED PHYSICS LETTERS
卷 102, 期 16, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4803173
关键词
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资金
- Knut and Alice Wallenberg Foundation
- Crafoord foundation
- Swedish Energy Agency
Performance of quantum dot sensitized solar cells relies on a rapid electron injection from quantum dot to metal oxide. We studied the injection process in CdSe-ZnO system by ultrafast time-resolved absorption spectroscopy for two types of acceptor morphologies-nanowires and nanoparticles' films. Based on comparison between experimental data and Marcus theory, we demonstrate that the acceptor morphology has a significant impact on electron injection due to (i) change in material permittivity and (ii) different density of the band-edge states. The results open a reference to improve injection efficiency in quantum dot-metal oxide system by selection of the acceptor morphology. (C) 2013 AIP Publishing LLC. [http://dx.doi.org/10.1063/1.4803173]
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