SEMICONDUCTOR SUBSTRATE FOR SOLAR CELL AND SOLAR CELL

摘要

A solar cell include a polycrystalline semiconductor substrate of a p-type, an emitter region of an n-type and forming a p-n junction with the polycrystalline semiconductor substrate, a first electrode connected to the emitter region, and a second electrode connected to the polycrystalline semiconductor substrate, wherein the polycrystalline semiconductor substrate has a pure p-type impurity concentration of substantially 7.2×1015/cm3 to 3.5×1016/cm3.