| 摘要 |
A solar cell according to an embodiment comprises: a support substrate; a rear electrode layer formed on the support substrate; a first through groove formed on the rear electrode layer; an optical absorption layer formed on the rear electrode layer; and a front electrode layer formed on the optical absorption layer, wherein the average surface roughness (Ra1) of the support substrate, which is exposed by the first through groove, is in a range of 28 nm to 100 nm. |
