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A Simple and Highly Efficient Method for Surface Treatment of Ti Substrates for Use in Dye-Sensitized Solar Cells

Authors

  • Ho-Gyeong Yun,

    Corresponding author
    1. Advanced Solar Technology Research Division, Electronics and Telecommunications Research Institute (ETRI), Daejeon 305–700, Korea
    • Advanced Solar Technology Research Division, Electronics and Telecommunications Research Institute (ETRI), Daejeon 305–700, Korea.
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  • Byeong-Soo Bae,

    1. Laboratory of Optical Materials and Coating (LOMC), Department of Materials Science and Engineering, KAIST, Daejeon 305–701, Korea
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  • Man Gu Kang

    1. Advanced Solar Technology Research Division, Electronics and Telecommunications Research Institute (ETRI), Daejeon 305–700, Korea
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Abstract

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Ti foil for use in dye-sensitized solar cells (DSSCs) is treated in a HNO3-HF solution. With the exception of cleaning, no additional pre- or post-treatment is performed. This surface-treatment method simultaneously improves electrical and optical behavior, resulting in a highly increased performance in terms of all figures of merit: Voc, Jsc, FF, and power conversion efficiency. An overall efficiency of 9.20% can be achieved by use of such HNO3-HF-treated Ti substrates in DSSCs.

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