HIGH EFFICIENCY LOCAL BACK ELECTRODE ALUMINUM PASTE FOR CRYSTALLINE SILICON SOLAR CELLS AND ITS APPLICATION IN PERC CELLS

摘要

A high-efficiency back electrode local aluminum paste crystalline silicon solar cell is composed of the following components proportioned to weights: 70-85 of parts powder, 1-30 parts of organic carrier, 0.1-10 parts of inorganic binder, 0.1-1 parts of auxiliary conductive additives. The aluminum paste is mainly used to manufacture the passivated emitter and back electrode of silicon solar cell with dot or linear contact on rear surface. PERC aluminum paste printed on the passivated film of the silicon wafer with dot-opening or linear-opening is dried and sintered.