MANUFACTURING METHOD FOR SOLAR CELL, AND SOLAR CELL OBTAINED FROM SAME

摘要

In the present invention, a water-based coating fluid for dopant diffusion comprising a polyvinyl alcohol-based resin and a dopant compound is partially coated on one surface of a semiconductor substrate (1) by screen printing, and then heat treated in order to form, on the surface of the substrate (1), a selective emitter layer (11) comprising a high concentration dopant diffusion portion (11a) and a low concentration dopant diffusion portion (11b), the section of the surface layer of the semiconductor substrate (1) which has been coated being made into the high concentration dopant diffusion portion (11a) and the section of the surface layer of the semiconductor substrate (1) which has not been coated being made into the low concentration dopant diffusion portion (11b). This process enables the efficient manufacture of high-performance solar cells exhibiting high photoelectric conversion efficiency.