Table 2 Fitting impedance parameters of Nyquist plots using the equivalent circuit in Fig. 10b
Samples | Rs (Ω cm2) | Qf | Rf (Ω cm2) | Qdl | Rct (kΩ cm2) | ||
---|---|---|---|---|---|---|---|
103Y01(Sn·Ω−1 cm−2) | n1 | 103Y02(Sn·Ω−1 cm−2) | n2 | ||||
Q235 CS | 5.875 | 1.918 | 0.825 | 6.617 | 1.185 | 0.809 | 4.238 |
TiO2dark | 5.220 | 1.603 | 0.813 | 20.84 | 3.080 | 0.934 | 1.343 |
SnIn4S8/TiO2dark | 5.182 | 3.235 | 0.885 | 19.31 | 3.042 | 0.936 | 1.141 |
TiO2illumination | 4.993 | 2.257 | 0.922 | 18.55 | 1.882 | 0.949 | 0.932 |
SnIn4S8/TiO2illumination | 5.343 | 6.283 | 0.873 | 36.47 | 1.947 | 0.825 | 0.278 |