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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
- 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