Density of state determination of two types of intra-gap traps in dye-sensitized solar cells and its influence on device performance

The density of state (DOS) of intra-gap traps and the dynamics of electron transport of a dye-sensitized TiO2 solar cell were investigated by means of time-resolved charge extraction (TRCE). The intrinsic chemical capacitance of the TiO2 layer was separated from the parasitic capacitance of the FTO...

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Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2014-06, Vol.16 (23), p.11626-11632
Main Authors: Wang, Yi, Wu, Dapeng, Fu, Li-Min, Ai, Xi-Cheng, Xu, Dongsheng, Zhang, Jian-Ping
Format: Article
Language:English
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Summary:The density of state (DOS) of intra-gap traps and the dynamics of electron transport of a dye-sensitized TiO2 solar cell were investigated by means of time-resolved charge extraction (TRCE). The intrinsic chemical capacitance of the TiO2 layer was separated from the parasitic capacitance of the FTO electrode, and was found to be dependent biexponentially on the photovoltage. It was shown that the shallow traps (>700 meV) differ from the deep ones (
ISSN:1463-9076
1463-9084
DOI:10.1039/c4cp00779d