SOLAR CELL, MODULE AND METHOD FOR MANUFACTURING SOLAR CELL ELECTRODE

摘要

A solar cell, a module and a method for manufacturing solar cell electrode are provided. Firstly, texturing and washing a cell substrate (2), then carrying out a shallow diffusion at the front side of the substrate to form a PN junction, thereafter depositing a passivation-antireflection film, then carrying out a deep diffusion in the electrode region at the front side of the substrate and passivating the rear side of the substrate. After that, chemically depositing a first metal in the electrode region at the front side of the substrate to form a seed layer (10, 30), then forming a second metal or metal alloy layer (11, 31) on the seed layer (10, 30) by spray-coating or printing, finally forming a third metal or metal alloy layer (12, 32) on the second metal or metal alloy layer (11, 31) by electrochemically depositing. The present invention can improve the robustness of the solar cell electrode, so as to enhance the reliability of a corresponding solar cell module.