| Cells | VCO (V) | JCC (mA/cm2) | FF (%) | ŋ (%) | References |
| CIGS/CGS | 1.7 | 17 | 82.41 | 25.14 | [16] |
| perovskite/CIGS | 2.25 | 25.80 | 73.02 | 30.71 | [19] |
| CGS/CIGS tandem cell | 1.74 | 34.60 | 65.20 | 39.30 | Simulation results |