SUBSTRATE FOR SOLAR CELL AND METHOD FOR MANUFACTURING SAME

摘要

The present invention relates to a substrate for a solar cell and a method for manufacturing same. The substrate for a solar cell, according to the present invention, is with a substrate for a solar cell having an electrode and an active layer, and comprises a substrate member and a film on one side of the substrate member, wherein the film is made of a material having an anisotropic crystal structure, and has a plurality of concave and convex parts on the surface thereof, the concave and convex parts being spontaneously generated from surface energy differentials of the crystal face of the anisotropic crystal structure. Having the film on one surface of the substrate member by depositing a material having an anisotropic crystal structure, to the present invention enables a spontaneous formation of convex and concave parts on the surface of the film from the surface energy differentials of the crystal face of the anisotropic crystal structure, thereby scattering and expanding the incident light on the solar cell to increase the amount of light that is absorbed in the photoactive layer. Thus the substrate for a solar cell having a plurality of concave and convex parts, which increase the pathways for the light to penetrate the photoactive layer, can be formed easily and at a low cost, and regardless of the kinds of substrate members used for the substrate for a solar cell, a plurality of concave and convex parts can be stably formed on the substrate for a solar cell.