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Calculated energy gap Egap, first singlet excitation energy (Eopt), and the exciton binding energies (Eb).
| dyes | Egap (eV) | Eopt (eV) | Eb (eV) |
|---|---|---|---|
| R | 2.13 | 1.93 | 0.20 |
| D1 | 1.87 | 1.77 | 0.10 |
| D2 | 1.76 | 1.62 | 0.14 |
| D3 | 1.96 | 1.79 | 0.17 |
| D4 | 1.75 | 1.71 | 0.04 |
| D5 | 1.43 | 1.12 | 0.31 |
| D6 | 1.53 | 1.15 | 0.38 |
