| 摘要 |
In order to provide a CIGS compound solar cell with a high conversion efficiency, a CIGS compound solar cell including a rear electrode layer 2, a CIGS light absorbing layer 3, a buffer layer 4, and a transparent electrode layer 5 in this order over a substrate 1 is configured such that the buffer layer 4 comprises a mixed crystal of a Group IIa metal and zinc oxide, and characteristics of the mixed crystal as shown by X-ray diffraction satisfy the following formula (1): 0.5 ‰¤ A / A + B + C < 1 (where none of A, B, C are 0)
A: peak intensity at plane (002)
B: peak intensity at plane (100)
C: peak intensity at plane (101). |
