ELECTROCONDUCTIVE PASTE WITH ADHENSION PROMOTING GLASS
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United States of America Patent
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Mar 19, 2015
app pub date -
Sep 16, 2013
filing date -
Sep 16, 2013
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Abstract
An electroconductive paste composition for use in forming backside soldering pads on a solar cell including metallic particles, glass frit including Bi2O3, Al2O3, SiO2, B2O3 and at least one of Li2O or Li3PO4, 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.
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