Table 1.
Physical parameters of ITO/CeO2/SnS/Spiro-OMeTAD/Mo heterostructure solar cell.
| Parameters | ITO | CeO2 | SnS | Spiro-OMeTAD |
|---|---|---|---|---|
| Thickness (nm) | 50 | 100 | 1400 | 100 |
| Band gap (eV) | 3.6 | 3.5 | 1.31 | 3.2 |
| Electron affinity (eV) | 4.5 | 4.6 | 4.2 | 2.1 |
| Dielectric permittivity (relative) | 8.9 | 9 | 13 | 3 |
| CB effective density of states (cm−3) | 2.2 × 1018 | 1 × 1020 | 1.18 × 1018 | 2.5 × 1018 |
| VB effective density of states (cm−3) | 1.8 × 1018 | 2 × 1021 | 4.76 × 1018 | 1.8 × 1019 |
| Electron mobility (cm2/Vs) | 10 | 100 | 130 | 2 × 104 |
| Hole mobility (cm2/Vs) | 10 | 25 | 4.3 | 2 × 104 |
| Shallow uniform donor density Nd (cm−3) | 1 × 1021 | 1 × 1021 | 0 | 0 |
| Shallow uniform acceptor density Na (cm−3) | 0 | 0 | 1015 | 1 × 1020 |
| Electron thermal velocity (cm/s) | 1 × 107 | 1 × 107 | 1 × 107 | 1 × 107 |
| Hole thermal velocity (cm/s) | 1 × 107 | 1 × 107 | 1 × 107 | 1 × 107 |
| Defect density (cm−3) | 0 | 1 × 1014 | 1 × 1014 | |
| Radiative recombination coefficient (cm3/s) | 0 | 2.3 × 10−9 | 2.3 × 10−9 | 2.3 × 10−9 |