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단결정 Si 태양전지 적용을 위해 제조된 무연 은 페이스트의 열 공정 최적화 및 전기적 특성 평가
정지현,김성진,손창록,어순철,권순용,Jeong, Ji-Hyun,Kim, Sung-Jin,Son, Chang-Rok,Ur, Soon-Chul,Kweon, Soon-Yong 한국전기전자재료학회 2011 전기전자재료학회논문지 Vol.24 No.10
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.
고효율 단결정 Si 태양전지 제작을 위한 은 페이스트의 제조 및 열 공정 최적화
피지희,김성진,손창록,권순용,Pi, Ji-Hee,Kim, Sung-Jin,Son, Chang-Rok,Kweon, Soon-Yong 한국전기전자재료학회 2013 전기전자재료학회논문지 Vol.26 No.2
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.