Table 3. Photovoltaic performances of the DSSCs using copper(i/ii) complexes as redox shuttles under AM 1.5 illuminationa.
| Dye | Electrolyte | J IPCE b/mA cm−2 | J SC/mA cm−2 | V OC/V | ff | PCE/% |
|---|---|---|---|---|---|---|
| LG4 | 0.2 M [Cu(tmby)2][TFSI] | 9.50 (0.7%) | 9.57 (9.35 ± 0.4) | 0.842 (0.844 ± 0.011) | 0.716 (0.716 ± 0.003) | 5.77 (5.65 ± 0.2) |
| 0.05 M [Cu(tmby)2][TFSI]2 | ||||||
| LG4 | 0.2 M [Cu(2MeOby)2][TFSI] | 10.0 (0.7%) | 10.07 (9.96 ± 0.2) | 0.821 (0.819 ± 0.002) | 0.762 (0.763 ± 0.004) | 6.30 (6.22 ± 0.1) |
| 0.05 M [Cu(2MeOby)2][TFSI]2 | ||||||
| FL1 | 0.2 M [Cu(tmby)2][TFSI] | 10.8 (3.5%) | 11.2 (10.7 ± 0.6) | 0.902 (0.895 ± 0.013) | 0.767 (0.757 ± 0.019) | 7.75 (7.28 ± 0.5) |
| 0.05 M [Cu(tmby)2][TFSI]2 | ||||||
| FL1 | 0.2 M [Cu(2MeOby)2][TFSI] | 12.3 (2.4%) | 12.6 (12.1 ± 0.4) | 0.887 (0.893 ± 0.01) | 0.730 (0.719 ± 0.009) | 8.15 (7.78 ± 0.3) |
| 0.05 M [Cu(2MeOby)2][TFSI]2 | ||||||
| FL1 | 0.1 M [Cu(tmby)2][TFSI] | 10.2 (1.9%) | 10.4 (10.1 ± 0.4) | 0.935 (0.919 ± 0.024) | 0.720 (0.735 ± 0.03) | 7.00 (6.84 ± 0.2) |
| 0.025 M [Cu(tmby)2][TFSI]2 | ||||||
| FL1 | 0.1 M [Cu(2MeOby)2][TFSI] | 11.6 (6.5%) | 12.4 (12.3 ± 0.5) | 0.890 (0.895 ± 0.006) | 0.752 (0.748 ± 0.008) | 8.30 (8.20 ± 0.2) |
| 0.025 M [Cu(2MeOby)2][TFSI]2 | ||||||
| FL1 | 0.1 M [Cu(2MeOby)2][BF4] | 12.0 (4.7%) | 12.6 (12.4 ± 0.6) | 0.913 (0.916 ± 0.003) | 0.777 (0.762 ± 0.02) | 8.94 (8.63 ± 0.3) |
| 0.025 M [Cu(2MeOby)2][BF4]2 | ||||||
| FL1 | 0.1 M [Cu(2MeOby)2][PF6] | 13.0 (1.5%) | 13.2 (12.7 ± 0.4) | 0.900 (0.910 ± 0.01) | 0.763 (0.762 ± 0.006) | 9.06 (8.80 ± 0.2) |
| 0.025 M [Cu(2MeOby)2][PF6]2 | ||||||
| XY1B | 0.1 M [Cu(2MeOby)2][PF6] | 14.1 (2.1%) | 14.4 (14.6 ± 0.2) | 0.961 (0.963 ± 0.002) | 0.752 (0.73 ± 0.02) | 10.4 (10.3 ± 0.1) |
| 0.025 M [Cu(2MeOby)2][PF6]2 | ||||||
| FL1 + XY1B | 0.1 M [Cu(2MeOby)2][PF6] | 14.4 (5.3%) | 15.2 (15.3 ± 0.1) | 0.945 (0.940 ± 0.01) | 0.756 (0.752 ± 0.005) | 10.9 (10.8 ± 0.1) |
| 0.025 M [Cu(2MeOby)2][PF6]2 |
a
Photovoltaic parameters derived from the highest PCEs. The values in parentheses denote average values from three or four independent experiments. Error bars represent the standard error of the mean.
b
The JIPCE values were obtained by integrating the IPCE plots, and the relative discrepancies from the corresponding JSC values obtained from the J–V characteristics are provided in the parentheses.