Number of junction | Optimum bandgap energy combination |
1 | 1.34 eV |
2 | 1.60/0.93 eV |
3 | 1.90/1.37/0.93 eV |
4 | 2.00/1.49/1.11/0.72 eV |
5 | 2.14/1.67/1.33/1.01/0.70 eV |
6 | 2.19/1.73/1.41/1.13/0.79/0.51 eV |