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 ZnO or V2O3 based glass, which is free of PbO or Bi2O3; and c) 20 to 34.9% by weight of an organic vehicle. |