ALUMINUM PASTE COMPOSITIONS COMPRISING SILOXANES AND THEIR USE IN MANUFACTURING SOLAR CELLS

摘要

Disclosed are aluminum paste compositions, and processes to form solar cells using the aluminum paste compositions, and the solar cells so-produced. The low-siloxane aluminum paste compositions consist essentially of 0.005-2.6% by weight of at least one siloxane; 44.5-84.9% by weight of an aluminum powder; 0.05-5.8% of an optional indium-free additive; and 15-50% by weight of an organic vehicle, wherein the amounts in % by weight are based on the total weight of the aluminum paste composition. Further included are high-siloxane aluminum paste compositions being 15-68% by weight of at least one siloxane; 25-84.9% by weight of an aluminum powder; 0.1-10% by weight of an organic vehicle.