Patent ID: 8778232

Claim:
A lead-free conductive compound for a solar cell electrode comprising: a conductive powder; a glass frit; and a vehicle; the glass frit being contained in a ratio ranging from 2 to 6 (wt %) with respect to a whole of the compound; and the glass frit being a lead-free glass consisting of 10 to 29 (mol %) of Bi 2 O 3 , 15 to 30 (mol %) of ZnO, 0 to 20(mol %) of SiO 2 , 20 to 33 (mol %) of B 2 O 3 , a total sum 8 to 21 (mol %) of Li 2 O, Na 2 O and K 2 O, 0 to 3 (mol %) of Al 2 O 3 , 0 to 5 (mol %) of CaO, 0 to 11 (mol %) of BaO, and 0 to 5(mol %) of P 2 O 5 , and a total sum 0 to 20 (mol %) of Al 2 O 3 , CaO, BaO, and P 2 O 5 , which are contained in a ratio with respect to a whole of a glass compound in terms of oxides.