| CPC H10F 77/219 (2025.01) [H10F 19/85 (2025.01); H10F 77/315 (2025.01)] | 6 Claims |
|
1. A solar cell comprising:
a back-contact electrode disposed on a substrate;
a light absorbing layer disposed on the back-contact electrode, the light absorbing layer including CIGS;
an anti-defect layer on the light absorbing layer;
a buffer layer disposed on the anti-defect layer, the buffer layer containing zinc (Zn) and sulfur(S); and
an upper electrode on the buffer layer,
wherein the anti-defect layer has a thickness of 5 nm to 10 nm and contains magnesium (Mg) having an atomic mass lower than that of the sulfur(S) of the buffer layer.
|