| 摘要 |
<P>PROBLEM TO BE SOLVED: To enhance photoconversion efficiency by forming a first impurity layer where only a part in contact with a first electrode is formed at high concentration and a remaining part is formed at relatively low concentration. <P>SOLUTION: The solar cell 1000 includes: a semiconductor substrate 100, where an uneven pattern 110 is formed on at least one surface; first impurity layers 210, 220 formed on the uneven pattern, the first impurity layer including a first part having a first concentration and a second part having a second concentration higher than the first concentration; and a first electrode 400 formed at a position in contact with the second part 220 of the first impurity layer but not the first part 210 of the first impurity layer. <P>COPYRIGHT: (C)2010,JPO&INPIT |
