The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on the Improvement of the Dye-sensitized Solar Cell by the Fiber Laser Transparent Conductive Electrode Scribing Technology

파이버 레이저 투명 전극 식각을 통한 염료감응형 태양전지 효율 상승 연구

  • 손민규 (부산대 공대 전자전기공학과) ;
  • 서현웅 (부산대 공대 전자전기공학과) ;
  • 신인영 (부산대 공대 전자전기공학과) ;
  • 김진경 (부산대 공대 전자전기공학과) ;
  • 최진호 (부산대 공대 전자전기공학과) ;
  • 최석원 (부산대 공대 전자전기공학과) ;
  • 김희제 (부산대 전자전기공학과)
  • Received : 2010.08.09
  • Accepted : 2010.11.15
  • Published : 2010.12.01
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Abstract

Dye-sensitized solar cell (DSC) is a promising alternative solar cell to the conventional silicon solar cell due to several advantages. Development of large scale module is necessary to commercialize the DSC in the near future. A scribing technology of the transparent conductive oxide (TCO) is one of the important technologies on the fabrication of DSC module. A quality of the scribed line on the TCO has a decisive effect on the efficiency of DSC module. Among several scribing technologies, the fiber laser is a suitable for scribing the TCO more precisely and accurately because of their own characteristics. In this study, we try to improve the quality of the TCO scribed line by using the fiber laser. Consequently, the operating parameter of fiber laser is optimized to get the TCO scribed line with good quality. And the fiber laser scribing technology of the TCO is applied to the fabrication of the DSC with optimal operating parameter, operating current 3900mA. As a result, the current density and fill factor are improved and the total efficiency is increased because the internal resistances of DSC such as TCO sheet resistance and the resistance concerned to the electron movement in the $TiO_2$ are reduced. This is analyzed by the electrochemistry impedance spectroscopy (EIS) and the equivalent circuit model of the DSC.

Keywords

References

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