期刊
JOURNAL OF APPLIED PHYSICS
卷 105, 期 9, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.3117513
关键词
-
资金
- Office of Naval Research [N00014-04-1-0434]
A kink is sometimes seen in the I-V curves for organic solar cells. In literature charge blocking has been speculated to be responsible for such kind of anomalous features. In this manuscript, we use poly (3-hexylthiophene):[6, 6]-phenyl-C-61-butyric acid methyl ester as our model polymer system and investigate different device structures using ultraviolet photoelectron spectroscopy as our primary tool to investigate the reason for this S-shaped kink. We attribute this anomalous feature to the presence of strong interface dipoles. We further propose a model based on the standard set of Poisson equation, continuity equation, and current density equations including both drift and diffusion components. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3117513]
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