Table 2. PV Performance of the Best PV Cells Based on ALs for Various D/A Ratiosa.
| AL D/A | D/A ratio | Jsc (mA/cm2) | Voc (V) | FF (%) | PCE (%) | EQE (%) | Rs (Ω cm2) | Rp (Ω cm2) |
|---|---|---|---|---|---|---|---|---|
| PBDD4T-2F/PC71BM | 0.5/1 | 12.7 | 0.28 | 34 | 1.22 | 18.4 | 7 | 35 |
| 0.75/1 | 12.1 | 0.60 | 42 | 3.01 | 17.5 | 10 | 155 | |
| 1/1 | 11.2 | 0.72 | 46 | 3.70 | 16.2 | 12 | 237 | |
| 1.25/1 | 21.6 | 0.56 | 39 | 4.70 | 31.3 | 7 | 61 | |
| 1.5/1 | 10.5 | 0.72 | 47 | 3.53 | 15.2 | 11 | 247 | |
| 1.75/1 | 12.7 | 0.6 | 44 | 3.36 | 18.4 | 12 | 166 | |
| 2/1 | 15.0 | 0.48 | 45 | 3.21 | 21.7 | 8 | 93 |
a
EQE: External quantum efficiency, Rp: parallel resistance, and Rs: series resistance.