| 摘要 |
A solar cell 1 according to the present invention includes a front panel 2, photovoltaic generating parts 3a located on a back side of the front panel 2 and arranged in an array direction at a designated pitch; and a reflective part 4 and 5 that reflects sunlight toward the back surface of the photovoltaic generating parts 3a. The reflective part includes a reflective panel 5 and a back panel 4. The reflective panel 5 includes peak portions projecting into a front direction of the photovoltaic generating parts and arranged at a cycle of a half pitch of the designated pitch P, and valley portions concaving into back side of the photovoltaic generating parts as viewed from a vertical direction vertical to the front direction and the array direction, wherein positions of centerlines B of the photovoltaic generating parts 3a in the array direction and positions of midlines A between the photovoltaic generating parts 3a next to each other in the array direction correspond to positions of the peak portions in the array direction, and wherein a first R machined portion 5a is formed at the peak portion corresponding to the midline A, and a first radius R1 which constitutes the first R machined portion 5a is greater than 0.05mm and smaller than one-fifth of the designated pitch P. |
