Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Manufacturing and Thermal Process Optimization of Ag-paste for Fabricating High Efficiency Mono-Si Solar Cell

고효율 단결정 Si 태양전지 제작을 위한 은 페이스트의 제조 및 열 공정 최적화

  • Pi, Ji-Hee (Department of Materials Science & Engineering/ReSEM, Korea National University of Transportation) ;
  • Kim, Sung-Jin (Eujene Korea Co., Ltd.) ;
  • Son, Chang-Rok (Eujene Korea Co., Ltd.) ;
  • Kweon, Soon-Yong (Department of Materials Science & Engineering/ReSEM, Korea National University of Transportation)
  • 피지희 (한국교통대학교 신소재공학과/친환경에너지 부품소재센터) ;
  • 김성진 ((주)유진코리아) ;
  • 손창록 ((주)유진코리아) ;
  • 권순용 (한국교통대학교 신소재공학과/친환경에너지 부품소재센터)
  • Received : 2013.01.07
  • Accepted : 2013.01.14
  • Published : 2013.02.01
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Abstract

A New Ag-pastes were developed for integrating the high efficiency mono-Si solar cell. The pastes were the mixture of 84 wt% Ag, 2 wt% glass frit, 11 wt% solvent of buthyl cabitol acetate, and 3 wt% additives. After fabricating the Ag-pastes by using a 3-roll mill, they were coated on a $SiN_x$/n+/p- stacks of a commercial mono-Si solar cell. And the post-thermal process was also optimized by varying the process conditions of peak temperature. The optimized solar cell efficiency on a 6-inch mono-Si wafer was 18.28%, which was the one of the world best performances. It meaned that the newly developed Ag-paste could be adopted to fabricate a commercial bulk Si solar cell.

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