METHOD FOR TREATING SURFACE OF SUBSTRATE FOR THIN FILM SOLLAR CELL

摘要

The present invention relates to a method for processing the surface of a substrate for a thin film solar cell. For this, the present invention provides a method for efficiently improving surface roughness. The method for processing the surface of the substrate for the thin film solar cell according to the embodiment of the present invention includes the steps of: preparing a steel substrate; cleaning the steel substrate; forming a polyimide coating layer on the surface of the steel substrate; and drying the steel substrate on which the coating layer is formed.