ALUMINUM ALLOY SUBSTRATE AND SOLAR CELL SUBSTRATE

摘要

An aluminum alloy substrate having excellent insulating performance and withstand voltage characteristics and high strength at elevated temperatures, and a method of efficiently producing a flexible thin-film solar cell by a roll-to-roll process using the aluminum alloy substrate are provided. The substrate has an oxide film of more than 1μm to 30μm thickness having insulating properties on a surface of an aluminum alloy containing 2.0 to 7.0 wt % of magnesium, the balance being aluminum and inevitable impurities.