한국태양에너지학회:학술대회논문집

The Korean Solar Energy Society (한국태양에너지학회)
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Optimization of Screen Printing Process in Crystalline Silicon Solar Cell Fabrication

결정질 실리콘 태양전지의 스크린 프린팅 공정 최적화 연구

  • Baek, Tae-Hyeon (Dept. of Electrical Engineering, Chungbuk National University) ;
  • Hong, Ji-Hwa (Dept of Semiconductor Engineering, Chungbuk National University) ;
  • Choi, Sung-Jin (Dept of Semiconductor Engineering, Chungnam National University) ;
  • Lim, Kee-Joe (Dept. of Electrical Engineering, Chungbuk National University) ;
  • Yu, Gwon-Jong (Korea Institute of Energy Research) ;
  • Song, Hee-Eun (Korea Institute of Energy Research)
  • 백태현 (충북대학교 대학원 전기공학학과) ;
  • 홍지화 (충북대학교 대학원 반도체공학과) ;
  • 최성진 (충남대학교 대학원 전자전파정보통신공학과) ;
  • 임기조 (충북대학교 대학원 전기공학학과) ;
  • 유권종 (한국에너지기술연구원) ;
  • 송희은 (한국에너지기술연구원)
  • Published : 2011.04.07
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Abstract

In this paper, we studied the optimization of the screen pringting method for crystalline silicon solar cell fabrication. The 156 * 156 mm2 p-type silicon wafers with $200{\mu}m$ thickness and $0.5-3{\Omega}cm$ resistivity were used after texturing, doping, and passivation. Screen printing method is a common way to make the c-Si solar cell with low-cost and high-efficiency. We studied the optimized condition for screen printing with crystalline silicon solar cell as changing the printing direction (finger line or bus bar), finger width, and mesh angle. As a result, the screen printing with finger line direction showed higher finger height and better conversion efficiency, compared with one with bus bar direction. The experiments with various finger widths and mesh angles were also carried out. The characteristics of solar cells was obtained by measuring light current-voltage, optical microscope and electroluminescence.

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