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Journal Article Promising efficiency enhancement in cobalt redox couple-based back-illuminated dye-sensitized solar cells with titanium foil substrate
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Authors
Myoung Kim, Ho-Gyeong Yun, Lee-Woon Jang, Dae-Woo Jeon, Man Gu Kang, Jeong-Hun Yoon, Ju-Mi Kim, Jong Hyeok Park, In-Hwan Lee, Jeum Jong Kim
Issue Date
2015-03
Citation
Journal of Power Sources, v.278, pp.32-37
ISSN
0378-7753
Publisher
Elsevier
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1016/j.jpowsour.2014.12.057
Abstract
We demonstrate that a [Co(bpy)3]2+/3+ (PF6)2/3 redox couple is an effective strategy for cost-effective and highly efficient dye-sensitized solar cells (DSSCs). Their high transmittance and large complex size make cobalt redox couples advantageous in back-illuminated devices. Furthermore, the use of thin TiO2 films, together with the naturally formed blocking layer at the outermost surface of Ti substrate, effectively alleviate the drawbacks of cobalt electrolyte. By virtue of these simultaneous effects, we achieve a highly promising power conversion efficiency of 7.12%.
KSP Keywords
Blocking layer, Cobalt electrolyte, Complex size, Conversion efficiency(C.E.), Efficiency enhancement, High transmittance, Highly efficient, Simultaneous effects, Ti substrate, Titanium foil, back-illuminated