| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method of forming a solar cell element which is capable of preventing an electrode from separating and protecting a semiconductor substrate against cracking. <P>SOLUTION: An opposite conductivity-type semiconductor impurity is diffused into one main surface of one conductivity-type semiconductor substrate 1, a surface electrode 4 whose main component is a first metal is formed on the main surface of the semiconductor substrate 1, and a back electrode composed of a current collector 5 whose main component is a second metal and an output port 6 whose main component is a third metal more easily solder-wettable than the second metal is formed on the other main surface of the semiconductor substrate 1 for the formation of the solar cell element. Paste which is mainly formed of the first metal to serve as the surface electrode 4 is applied on the one main surface of the semiconductor substrate 1, paste which is mainly formed of the third metal to serve as the output port 6 of the back electrode is applied on the other main surface of the semiconductor substrate 1, the substrate 1 is subjected to first baking, then paste which is mainly formed of the second metal to serve as the current collector 5 of the back electrode is applied on the other main surface, and then the substrate is subjected to second baking. <P>COPYRIGHT: (C)2004,JPO</p> |
