Current Photovoltaic Research

Korea Photovoltaic Society (한국태양광발전학회)
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Improvement of Efficiency in Dye-Sensitized Solar Cells with Addition of TBA to the TiO2 Paste and Its Electrochemical Analysis

이산화티타튬 페이스트에 TBA 첨가에 따른 염료감응 태양전지의 효율향상 및 전기화학적 분석

  • Lee, Minoh (Department of Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST)) ;
  • Jung, Cho-long (Department of Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST)) ;
  • Choi, Woo-yeol (Department of Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST)) ;
  • Jo, Yimhyun (Department of Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST))
  • 이민오 (유니스트(UNIST), 화학공학과) ;
  • 정초롱 (유니스트(UNIST), 화학공학과) ;
  • 최우열 (유니스트(UNIST), 화학공학과) ;
  • 조임현 (유니스트(UNIST), 화학공학과)
  • Received : 2014.07.15
  • Accepted : 2014.07.15
  • Published : 2014.09.30
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Abstract

Dye-sensitized solar cells (DSSCs) are considered as promising alternatives to conventional photovoltaic device. However, commercialization of the DSSCs is restricted due to the low efficiency. In this paper, highly efficiency DSSCs were fabricated by the adding the TBA to the $TiO_2$ paste. $TiO_2$ photoanode added 0.2 M TBA in DSSCs are shown the best efficiency of 9.14 %. This result ascribed to improvement of the connection between the $TiO_2$ nanoparticles by the addition of the optimized amount TBA. The morphology of the photoanode was observed by FE-SEM. Further investigation about the kinetics of the electrochemical processes are performed by the EIS analysis. Longest diffusion length was obtained in case adding 0.2 M of TBA to $TiO_2$ paste, which was matched well with the improved efficiency.

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