| abstract |
An electroconductive paste composition for use in forming backside soldering pads on a solar cell including metallic particles, glass frit including Bi 2 O 3 , Al 2 O 3 , SiO 2 , B 2 O 3 and at least one of Li 2 O or Li 3 PO 4 , and an organic vehicle is provided. The invention also provides a solar cell comprising a silicon wafer having a front side and a backside, and a soldering pad formed on the silicon wafer produced from an electroconductive paste according to the invention. The invention further provides a solar cell module comprising electrically interconnected solar cells according to the invention. A method of producing of a solar cell, comprising the steps of providing a silicon wafer having a front side and a backside, applying an electroconductive paste composition according to the invention onto the backside of the silicon wafer, and firing the silicon wafer according to an appropriate profile, is also provided. |