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Journal Article
Effect of Increased Surface Area of Stainless Steel Substrates on the Efficiency of Dye-sensitized solar Cells
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- Authors
- Ho-Gyeong Yun, Yong Seok Jun, Jong Dae Kim, Byeong-Soo Bae, Man Gu Kang
- Issue Date
- 2008-10
- Citation
- Applied Physics Letters, v.93, no.13, pp.1-3
- ISSN
- 0003-6951
- Publisher
- American Institute of Physics (AIP)
- Language
- English
- Type
- Journal Article
- Project Code
- 08MB1800, Components/Module technology for Ubiquitous Terminals, Kim Jongdae
- Abstract
- In order to increase the electrical contact area between Ti O2 particles and stainless steel (StSt) substrates of the dye-sensitized solar cells (DSSCs), StSt foil was roughened electrochemically using sulfuric acid with some additives. Compared with the DSSC with nontreated StSt substrate, DSSC with this roughened StSt substrate showed a 33% increase in light-to-electricity conversion efficiency with negligible effect on open circuit voltage (Voc) and fill factor. Electrochemical impedance spectroscopy clearly confirmed that the increased performance was due to a decreased electrical resistance at the Ti O2 /StSt interface. © 2008 American Institute of Physics.
- KSP Keywords
- Contact area, Conversion efficiency(C.E.), Dye-sensitized solar cells(DSCs), Electrical Resistance, Impedance spectroscopy(IS), Light-to-electricity conversion efficiency, Open circuit voltage(VOC), Stainless steel(SUS316), Stainless steel substrate, Sulfuric acid(SA), Surface Area