METHOD FOR FORMING SELECTIVE EMITTER IN A SOLAR CELL

摘要

PURPOSE: A method for forming a selective emitter of a solar cell is provided to improve the conversion efficiency of a solar cell by minimizing a contact resistance between a front electrode and silicon by a high density emitter. CONSTITUTION: A first conductive crystalline silicon substrate(201) is prepared. A second conductive low density ion implantation layer(203) is formed on the substrate. A laser is irradiated to the surface of a substrate to form a front electrode. A high density semiconductor layer(204) is formed by activating impurity ions(P) in the second conductive low density ion implantation layer. A second conductive semiconductor layer is formed by activating the second conductive low density ion implantation layer.