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Impacts of ZnO/TiO2 Assorted Electrode on Photoelectric Characteristics of Dye-Sensitized Solar Cells

Published online by Cambridge University Press:  01 February 2011

Xu Wang ,
Haiyou Yin ,
Bao Wang ,
Lifeng Liu ,
Yi Wang  and
Jinfeng Kang
Xu Wang
Affiliation:
wangxu_kiang@163.com, Microelectronics, Beijing, China
Haiyou Yin
Affiliation:
seafriend@gmail.com, Microelectronics, Beijing, China
Bao Wang
Affiliation:
wangbao2006@163.com, Microelectronics, Beijing, China
Lifeng Liu
Affiliation:
lfliu@ime.pku.edu.cn, Microelectronics, Beijing, China
Yi Wang
Affiliation:
wangyi@ime.pku.edu.cn, Microelectronics, Beijing, China
Jinfeng Kang
Affiliation:
kangjf@pku.edu.cn, Microelectronics, Beijing, China
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Abstract

A novel ZnO/TiO2 assorted photoelectrode for dye-sensitized solar cells (DSSCs) is proposed. The impacts of the ZnO/TiO2 assorted photoelectrode on the photovoltaic performance of dye-sensitized solar cells (DSSCs) were investigated. The measurements of the light transmission spectra showed the higher transmittance through ZnO/FTO than through FTO during the effective wavelength region of 536nm˜800nm for DSSCs, indicating that ZnO/TiO2 assorted photoelectrode is beneficial for the photovoltaic performance of DSSCs. The measurements on the photovoltaic characteristics of the DSSC cell indicate that the inserted ZnO layer can cause the increased open circuit voltage (Voc) more than 70 mV and fill factor (FF) but the decreased short circuit current. The enhanced Voc and FF could be attributed to the suppressed the recombination of photon-generated carriers between the ZnO/TiO2 assorted photoelectrode and electrolyte (dye) compared to TiO2 photoelectrode. However, the additional series resistance of inserted ZnO layer causes the reduced short circuit current. The optimized conversion efficiency can be achieved in the DSSC with ZnO/TiO2 assorted photoelectrode by using low series resistance of ZnO layer.

Keywords

photovoltaicsol-gelthin film
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1270: Symposia GG/HH/II – Organic Photovoltaics and Related Electronics-From Excitons to Devices , 2010 , 1270-GG04-16
Copyright
Copyright © Materials Research Society 2010

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References

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