Doping the dopant impurity of desire at least in the semiconductor raw materials the semiconductor substrate in

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a solar cell, in which the production cost of semiconductor substrates can be reduced significantly, while eliminating aging effect of photoelectric conversion efficiency.;SOLUTION: The method for producing a semiconductor substrate comprises a step of producing a polycrystalline wafer by slicing a polycrystalline rod, grown by doping a semiconductor material with a desired impurity dopant; and a step for increasing the grain size of the polycrystalline wafer or single crystallization of it from the surface on one side down to a desired depth by zone melt re-crystallization. The method for producing a solar cell comprises a step for forming a solar cell, such that solar light is received from the side subjected to zone melt re-crystallization using a semiconductor substrate thus produced as a starting material, and a step of removing at least a layer on the rear surface, subjected to gettering with impurities prior to forming an electrode on the rear surface in the solar cell forming process.;COPYRIGHT: (C)2002,JPO