Method of manufacturing a solar cell and the solar cell

Providing a semiconductor substrate having a a rear surface a) the light-receiving surface, a step of passivation layer is formed on the back surface, b) forming a silver conductor pattern on the back surface of the semiconductor substrate, c) a step of forming an aluminum conductor pattern on the back surface of the semiconductor substrate; at least a portion of the aluminum conductor pattern which is overlaid on at least a portion of the silver conductor pattern, d) a silver conductor pattern and the aluminum conductor by firing the pattern at the same time, and forming an electrical contact between the semiconductor substrate and the aluminum conductor pattern by fire through the area where the silver conductor pattern and the aluminum conductor pattern is overlaid, producing a solar cell methods for.