Table 1.
Photovoltaic parameters of D18:AQx-2, D18:AQx-6 and D18:AQx-8 based OSCs under the illumination of AM 1.5 G, 100 mW cm−2
| Acceptors |
Voc (V) |
JSC (mA cm−2) |
JSCcal,b (mA cm−2) |
FF (%) |
PCE (%) |
∆Enrc (eV) |
∆Elossd (eV) |
|---|---|---|---|---|---|---|---|
| AQx-2a |
0.868 (0.869 ± 0.003) |
26.1 (25.8 ± 0.2) |
25.4 |
76.0 (75.6 ± 0.3) |
17.2 (17.0 ± 0.11) |
0.206 | 0.529 |
| AQx-6a |
0.892 (0.890 ± 0.002) |
26.8 (26.7 ± 0.1) |
25.5 |
77.8 (77.1 ± 0.5) |
18.6 (18.3 ± 0.10) |
0.198 | 0.518 |
| AQx-8a |
0.913 (0.909 ± 0.003) |
24.7 (24.9 ± 0.1) |
23.9 |
75.7 (75.0 ± 0.4) |
17.1 (17.0 ± 0.05) |
0.178 | 0.493 |
| AQx-6e | 0.874 | 26.7 | – | 79.1 | 18.4 | – | – |
aAverage values with standard deviation were obtained from 10 individual devices.
bThe calculated JSC values from the EQE curve.
cCalculated using eq. ∆Enr = −(kT/q)In(EQEEL).
dCalculated using eq. ∆Eloss = Eg − qVOC, in which Eg is determined the crossing point of absorption and emission.
eThe certified PCE obtained from National Institute of Metrology (NIM), Chain.