| 摘要 |
PROBLEM TO BE SOLVED: To provide a CIGS solar cell including a CIGS layer with the excellent characteristics and a manufacturing method for the same.SOLUTION: The CIGS solar cell includes a substrate 1, a back electrode layer 3, a CIGS light absorption layer 4, a buffer layer 5, and a transparent electrode 6 in this order. The CIGS light absorption layer 4 includes a first light absorption layer 4a formed on the substrate 1 side, and a second light absorption layer 4b formed on the first light absorption layer 4a. The first light absorption layer 4a includes crystal grains with an average grain size of A and the second light absorption layer 4b includes microscopic crystal grains with an average grain size of A/3 or less.SELECTED DRAWING: Figure 1 |
