Low-melting-point glass composition and conductive paste material using same

摘要

A conductive paste material containing a SiO2-B2O3—ZnO—RO—R2O type lead-free low-melting-point glass that contains, by wt %, 2 to 10% of SiO2, 18 to 30% of B2O3, 0 to 10% of Al2O3, 0 to 25% of ZnO, 20-50% of RO where RO represents one or more of MgO, CaO, SrO, and BaO, and 10 to 17% of R2O where R2O represents one or more of Li2O, Na2O, and K2O.

主权项

1. A conductive paste for a solar battery having a silicon semiconductor substrate provided therein, comprising:
aluminum powder; and a low-melting-point glass having substantially no lead therein that is a SiO2—B2O3—ZnO—RO—R2O type lead-free low-melting-point glass that contains, by wt %,
2 to 10% of SiO2,18 to 30% of B2O3,0 to 10% of Al2O3,0 to 25% of ZnO,20-50% of RO, wherein RO represents one or more of MgO, CaO, SrO and BaO, and10 to 17% of R2O, wherein R2O represents one or more of Li2O, Na2O, and K2O.