Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Photoelectric Characteristics of Nanocrystalline TiO2 Film Prepared from TiO2 Colloid Sol for Dye‐Sensitized Solar Cell

  • Hwang, Kyung-Jun (Department of Chemical and Biochemical Engineering, Chosun University) ;
  • Lee, Jae-Wook (Department of Chemical and Biochemical Engineering, Chosun University) ;
  • Yoon, Ho-Sung (Korea Institute of Geoscience and Mineral Resources) ;
  • Jang, Hee-Dong (Korea Institute of Geoscience and Mineral Resources) ;
  • Kim, Jin-Geol (Department of Chemical Engineering, Soonchunhyang University) ;
  • Yang, Jin-Suk (Department of Chemical and Biomolecular Engineering, Sogang University) ;
  • Yoo, Seung-Joon (Department of Environmental and Chemical Engineering, Seonam University)
  • Published : 2009.10.20
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Abstract

A working electrode in dye-sensitized solar cells was fabricated using $TiO_2$ colloidal sol prepared from titanium isopropoxide used as a starting material by applying the sol-gel method. The effect of aging times and temperatures on physical and chemical properties of $TiO_2$ sol particles was systematically investigated. Results showed that the crystallinity and average particle size of $TiO_2$ colloidal sol can be successfully controlled by the adjustment of aging time and temperature. The conversion efficiency of the repetitive dry coating films fabricated using the dried $TiO_2$ colloidal sol particles and hydroxypropyl cellulose binder (15%) was 10.31% with a high transparency.

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References

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