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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Thermal Process Optimization of Pb-free Ag-paste and Evaluation of Electrical Properties in Mono-Si Solar Cell

단결정 Si 태양전지 적용을 위해 제조된 무연 은 페이스트의 열 공정 최적화 및 전기적 특성 평가

  • Jeong, Ji-Hyun (Department of Materials Science & Engineering, ReSEM, Chungju National University) ;
  • Kim, Sung-Jin (Zenixon Co. Ltd.) ;
  • Son, Chang-Rok (Zenixon Co. Ltd.) ;
  • Ur, Soon-Chul (Department of Materials Science & Engineering, ReSEM, Chungju National University) ;
  • Kweon, Soon-Yong (Department of Materials Science & Engineering, ReSEM, Chungju National University)
  • 정지현 (충주대학교 신소재공학과, 친환경에너지 부품소재센터) ;
  • 김성진 ((주) 제닉슨) ;
  • 손창록 ((주) 제닉슨) ;
  • 어순철 (충주대학교 신소재공학과, 친환경에너지 부품소재센터) ;
  • 권순용 (충주대학교 신소재공학과, 친환경에너지 부품소재센터)
  • Received : 2011.08.16
  • Accepted : 2011.09.20
  • Published : 2011.10.01
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Abstract

Two kind of Ag-pastes were prepared for integrating the bulk Si solar cell. One is the Ag-paste with Pb-based glass frit and the other is that with Bi-based glass frit. The pastes were the mixture of 84 wt% Ag, 2 wt% glass frit, 11 wt% solvent of buthyl cabitol acetate, and 2 wt% additives. After fabricating the Ag-pastes, they was coated on a $SiN_x$/n+/p- stacks of a commercial mono-Si solar cell. The solar cell efficiency was 17.6% in the case of the Pb-based Ag-paste. However that was 16.2% in the solar cell integrated with the Bi-based Ag-paste. The lower performance in Bi-based Ag-paste was caused by the higher series resistance and the lower shunt resistance in comparison with the Pb-based Ag-paste.

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