Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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$TiO_2$ Particle Size Effect on the Performance of Dye-Sensitized Solar Cell

$TiO_2$ 입자 크기에 따른 염료감응태양전지의 성능 변화

  • Kim, Ba-Wool (School of Information and Communication Engineering, Sungkyunkwan University) ;
  • Park, Mi-Ju (School of Information and Communication Engineering, Sungkyunkwan University) ;
  • Lee, Sung-Uk (School of Information and Communication Engineering, Sungkyunkwan University) ;
  • Choi, Won-Seok (Hanbat National University) ;
  • Hong, Byung-You (Center for Advanced Plasma Surface Technology(CAPST), Sungkyunkwan University)
  • 김바울 (성균관대학교 정보통신공학부) ;
  • 박미주 (성균관대학교 정보통신공학부) ;
  • 이성욱 (성균관대학교 정보통신공학부) ;
  • 최원석 (한밭대학교) ;
  • 홍병유 (플라즈마응용 표면기술 연구센터)
  • Published : 2007.11.01
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Abstract

Dye-Sensitized Solar Cell Solar cells(DSSC) were appeared for overcoming global environmental problems and lack of fossil fuel problems. And it is one of study field that is getting into the spotlight lately because manufacturing method is more simple and inexpensive than existing silicon solar cells. Oxide semiconductor is used for adsorption of dye and electron transfer in DSSC study, and $TiO_2$ is used most usually. Overall light conversion efficiency is changed by several elements such as $TiO_2$ particle size and structure, pore size and shape. In this study, we report the solar cell performance of titania$(TiO_2)$ film electrodes with various particle sizes. $TiO_2$ particle size was 16 nm, 25 nm, and mixture of 16nm and 25 nm, and manufactured using Doctor blade method. When applied each $TiO_2$ film to DSSC, the best efficiency was found at 16nm of $TiO_2$ particle. 16nm of $TiO_2$ particle has the highest efficiency compared to the others, because particles with smaller diameters would adsorb more dye due to larger surface area. And in case of the mixture of 16nm and 25 nm, the surface area was smaller than expected. It is estimated that double layer is adsorbed a large amount of chemisorbed dye and improved light scattering leading due to efficiency concentration light than mono layer.

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