Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Coating Property of Hybrid Structured Photo-Electrode to Increase Dye-Sensitized Solar Cells Efficiency

염료감응형 태양전지의 효율 향상을 위한 하이브리드 구조 광전극의 코팅특성

  • Kim, Min-Hee (National Core Research Center for Hybrid Materials Solution, Pusan National University) ;
  • Lee, Hyung-Woo (National Core Research Center for Hybrid Materials Solution, Pusan National University) ;
  • Jeong, Young-Keun (National Core Research Center for Hybrid Materials Solution, Pusan National University)
  • 김민희 (부산대학교 하이브리드 소재솔루션 국가핵심연구센터) ;
  • 이형우 (부산대학교 하이브리드 소재솔루션 국가핵심연구센터) ;
  • 정영근 (부산대학교 하이브리드 소재솔루션 국가핵심연구센터)
  • Received : 2010.10.11
  • Accepted : 2010.11.05
  • Published : 2010.12.28
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Abstract

The hybrid structured photo-electrode for dye-sensitized solar cells was fabricated based on the composites of $TiO_2$ nanoparticles and nanowires. Three samples with different hybrid structures were prepared with 17 vol%, 43 vol%, and 100 vol% nanowires. The energy conversion efficiency was enhanced from 5.54% for pure nanoparticle cells to 6.01% for the hybrid structure with 17 vol% nanowires. For the hybrid structured layers with high nanowires concentration (43 vol% and 100 vol%), the efficiency decreased with the nanowire concentration, because of the decrease of specific surface area, and of thus decreased current density. The random orientations of $TiO_2$ nanowires can be preserved by the doctor blade process, resulted in the enhanced efficiency. The hybrid structured $TiO_2$ layer can possess the advantages of the high surface area of nanoparticles and the rapid electron transport rate and the light scattering effect of nanowires.

Keywords

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