Table 3 Layer parameters of different etls.
From: The performance of Cu2MnSnS4 based solar cells with CZTS as hole transport nanolayer
Parameter | ZnS | CdS | ZnO | SnS2 | TiO2 | WO3 | |
|---|---|---|---|---|---|---|---|
Thickness (µm) | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | |
Dielectric constant | 8.32 | 8.9 | 9 | 10 | 9 | 12 | |
Electron affinity (eV) | 4.5 | 4.4 | 4.35 | 4.24 | 3.9 | 3.8 | |
Band gap Eg (eV) | 3.68 | 2.4 | 3.3 | 2.24 | 3.2 | 3.2 | |
Density of state NC(cm− 3) | 2.2 × 1018 | 2.4 × 1018 | 1.8 × 1019 | 7.32 × 1018 | 2 × 1017 | 1.8 × 1019 | |
Density of state, NV(cm− 3) | 1.9 × 1019 | 1.8 × 1019 | 2.2 × 1018 | 1.8 × 1019 | 6 × 1017 | 7.1 × 1019 | |
Electron mobility µn (cm2/ Vs) | 100 | 100 | 100 | 50 | 20 | 40 | |
Hole mobility µp (cm2/ Vs) | 25 | 25 | 25 | 50 | 10 | 40 | |
Donor doping ND (cm− 3) | 1 × 1017 | 1 × 1017 | 1 × 1017 | 9.85 × 1018 | 2 × 1017 | 1 × 1016 | |