| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To form high-concentration diffusion layers of a solar cell under its front-surface electrodes without any additional heat treatment process. <P>SOLUTION: On the side of one principal surface of an one conductive semiconductor substrate 1, the solar cell has many fine protrusions 2, the other conductive impurity diffusion layer 4, and front-surface electrodes 6. Also, on the side of the other principal surface, the solar cell has rear-surface electrodes 7, 8. Fine protrusions 3 present under the front-surface electrodes 6 of the side of the one principal surface have larger aspect ratios, higher heights, and shorter distances between the summits of the adjacent protrusions 3 to each other than the fine protrusions 2 present in the region wherefrom the regions present under the electrodes 6 are excluded. Thereby, high-concentration diffusion layers are formed under the front-surface electrodes 6. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
