METHOD FOR FABRICATING BACK CONTACT SOLAR CELL

摘要

PURPOSE: A method for manufacturing a back electrode type solar cell is provided to prevent the recombination of holes and surface defects by minimizing a p-type doping layer exposed to the back surface of a substrate. CONSTITUTION: The back surface of a substrate (301) is covered with a p-type doping source. A mask pattern with an opening part is formed on the p-type doping source. The substrate is heat-treated to form a p-type doping layer (304) and to form a diffusion byproduct layer on the p-type doping layer at the same time. The back surface of the substrate including the diffusion byproduct layer is covered with an n-type doping source. The substrate is heat-treated to remove the mask pattern and to form an n-type doping layer (307). [Reference numerals] (AA) Second interface; (BB) First interface