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The Effects of Composition on the Interface Resistance in Bi-System Glass Frit

Bi 계열 Glass Frit 조성이 계면저항에 미치는 영향

  • Kim, In Ae (Advanced Materials Convergence Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Shin, Hyo Soon (Advanced Materials Convergence Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Yeo, Dong Hun (Advanced Materials Convergence Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Jeong, Dae Yong (Department of Materials Science and Engineering, Inha University)
  • 김인애 (한국세라믹기술원 기초소재융합본부) ;
  • 신효순 (한국세라믹기술원 기초소재융합본부) ;
  • 여동훈 (한국세라믹기술원 기초소재융합본부) ;
  • 정대용 (인하대학교 신소재공학과)
  • Received : 2013.11.04
  • Accepted : 2013.11.18
  • Published : 2013.12.01

Abstract

The front electrode should be used to make solar cell panel so as to collect electron. The front electrode is used by paste type, printed on the Si-solar cell wafer and sintered at about $800^{\circ}C$. The paste is composed Ag powder and glass frit which make the ohmic contact between Ag electrode and n-type semiconductor layer. From the previous study, the Ag electrodes which used two commercial glass frit of Bi-system were so different on the interface resistance. The main composition of them was Bi-Zn-B-Si-O and few additives added in one of them. In this study, glass frit was made with the ratio of $Bi_2O_3$ and ZnO on the main composition, and then paste using glass frit was prepared respectively. And, also, the paste using the glass frit added oxide additives were prepared. The change of interface resistance was not large with the ratio of $Bi_2O_3$ and ZnO. In the case of G6 glass frit, 78 wt% $Bi_2O_3$ addition, the interface resistance was $190{\Omega}$ and most low. In the glass frit added oxide, the case of Ca increased over 10 times than it of G6 glass frit on the interface resistance. It was thaught that after sintering, Ca added glass frit was not flowed to the interface between Ag electrode and wafer but was in the Ag electrode.

Keywords

References

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  1. Properties of Silicon Solar Cells with Local Back Surface Field Fabricated by Aluminum-Silicon Eutectic Alloy Paste vol.4, pp.4, 2016, https://doi.org/10.21218/CPR.2016.4.4.145