Back substrate of compound thin film solar cell and Compound thin film solar cell comprising the same

摘要

This invention discloses a compound thin film solar cell including a compound thin film solar cell substrate and the back of it . Compound thin film solar cell back substrate according to the present invention, in the rear substrate of a compound thin film solar cell , the back of the substrate , the surface modification layer is formed by surface treatment on the upper surface , the content of oxygen in the surface modification layer 14at % or less and the content of nitrogen not less than 6.5at%. ;