abstract |
The present invention discloses a silver paste composition for a back electrode of a solar cell, which comprises a) 65 to 75% by weight, based on the total weight of the composition, of silver powder having an average particle diameter (D50) of 0.3 to 1.5 μm. ; b) 0.01 to 10% by weight of the glass material; c) 20 to 34.8% by weight of the organic vehicle liquid; and d) 0.1 to 5% by weight of the Group 3 element, the Group 3 element compound, or a salt or hydrate thereof . |