| 摘要 |
<p>[Task] To provide a low-melting point glass composition for a lead-free conductive paste material with which a high collection efficiency can be obtained in a conductive paste for a crystalline Si solar battery. [Means for establishing the Task] To provide a conductive paste material which is characterized by containing a SiO 2 -B 2 O 3 -ZnO-RO-R 2 O type lead-free low-melting-point glass that contains, by wt%, 2 to 10% of SiO 2 , 18 to 30% of B 2 O 3 , 0 to 10% of Al 2 O 3 , 0 to 25% of ZnO, 20-50% of RO(MgO + CaO + SrO + BaO), and 10 to 17% of R 2 O (Li 2 O + Na 2 O + K 2 O).</p> |
