Table 1. Performance data of glass/ITO/TiO2/PBDTTT-C:Cy7-T:PC70BM/MoO3(20 nm)/Ag(80 nm) solar cells.
Entry | Ratio PBDTTT-C:Cy7-T:PC70BM (w/w/w) a | Active film thickness (± 5 nm) | Voc (V) | Jsc (mA cm−2) | FF (%) | PCE b (%) | PCE average (%) | AVT c 450–700 nm (%) |
---|---|---|---|---|---|---|---|---|
A | 1:0:1.5 | 90 | 0.70 | 12 | 65 | 6.0 | 5.2 ± 0.6 | 56 |
B | 1:0:1.5 | 60 | 0.68 | 7.4 | 54 | 3.0 | 2.9 ± 0.1 | 69 |
C | 1:0:1.5 | 30 | 0.69 | 5.4 | 52 | 2.1 | 2.0 ± 0.1 | 75 |
D | 0.7:0:1.5 | 83 | 0.69 | 8.7 | 71 | 4.7 | 4.5 ±0.2 | 66 |
E | 0.7:0.3:1.5 | 95 | 0.71 | 10.4 | 68 | 5.5 | 4.7 ± 0.4 | 65 |
F | 0:1:2 d | 0.71 | 4.1 | 38 | 1.1 |
The concentration of PC70BM was constant at 15 mg ml−1.
The light intensity was 91 mW cm−2.
Average visible transmittance (AVT) values of the layer stack glass/ITO/TiO2/active layer/MoO3.
From [18].