Photovoltaic performance degradation and recovery of the flexible dye-sensitized solar cells by bending and relaxing

He, Xue-Long, Liu, Mei, Yang, Guan-Jun, Yao, Hai-Long, Fan, Sheng-Qiang and Li, Chang-Jiu (2013) Photovoltaic performance degradation and recovery of the flexible dye-sensitized solar cells by bending and relaxing. Journal of Power Sources, 226 173-178. doi:10.1016/j.jpowsour.2012.10.056


Author He, Xue-Long
Liu, Mei
Yang, Guan-Jun
Yao, Hai-Long
Fan, Sheng-Qiang
Li, Chang-Jiu
Title Photovoltaic performance degradation and recovery of the flexible dye-sensitized solar cells by bending and relaxing
Journal name Journal of Power Sources   Check publisher's open access policy
ISSN 0378-7753
1873-2755
Publication date 2013-03
Year available 2012
Sub-type Article (original research)
DOI 10.1016/j.jpowsour.2012.10.056
Volume 226
Start page 173
End page 178
Total pages 6
Place of publication Lausanne, Switzerland
Publisher Elsevier
Collection year 2013
Language eng
Abstract Flexibility, as well as high efficiency, of flexible dye-sensitized solar cells (DSCs) is of significant importance to their application. In this study, the photovoltaic performance of the flexible DSCs under bending and relaxed states is investigated to understand the degradation and recovery of the photovoltaic performance. Results show that when the bending radius is larger than 8 mm, the photovoltaic parameters of the flexible DSCs maintain the same values as those in the relaxed states. However, when the bending radius is reduced to 8 mm, the photovoltaic performance is two orders of magnitude decreased. Most interestingly, when the bending DSCs are relaxed, the photovoltaic performance is found to be completely recovered. The microstructure observation shows that the direct contact between TiO2 film and counter electrode (CE) occurred at the bending radius of 8 mm, which should be the main reason for their low photovoltaic performance in the bending state. Finally, a modified equivalent circuit model is proposed for the flexible DSCs under bending condition.
Keyword Dye-sensitized solar cells
Photovoltaic performance
Short circuit
Titanium dioxide film
Electrochemical impedance spectroscopy
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online: 26 October 2012.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Centre for Organic Photonics and Electronics
Official 2013 Collection
 
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Created: Fri, 22 Feb 2013, 08:59:57 EST by Mrs Louise Nimwegen on behalf of School of Chemistry & Molecular Biosciences