Research Article
Numerical Investigations and Analysis of Cu2ZnSnS4 Based Solar Cells by SCAPS-1D
Table 1
Baseline parameters for modeling CZTS solar cells [
9,
13,
14].
| | General device properties | | | Front | | | Back |
| | (cm/s) | 107 | | | 105 | | (cm/s) | 105 | | | 107 |
| | Layer properties | | | CZTS | CdS | ZnO-I | ZnO:Al |
| | (nm) | Variable | 100 | 80 | 450 | | (eV) | 1.45 | 2.4 | 3.3 | 3.3 | | (eV) | 4.1 | 4.215 | 4.4 | 4.4 | | 7.0 | 10.0 | 9.0 | 9.0 | | (cm−3) | 2.2 × 1018 | 2.2 × 1018 | 2.2 × 1018 | 2.2 × 1018 | | (cm−3) | 1.8 × 1019 | 9.1 × 1018 | 1.8 × 1019 | 1.8 × 1019 | | (cm/s) | 1 × 107 | 1 × 107 | 1 × 107 | 1 × 107 | | (cm/s) | 1 × 107 | 1 × 107 | 1 × 107 | 1 × 107 | | (cm2/Vs) | 6 × 101 | 1 × 102 | 1 × 102 | 1 × 102 | | (cm2/Vs) | 2 × 101 | 2.5 × 101 | 2.5 × 101 | 2.5 × 101 | | Doping (cm−3) | Variable (a) | 1 × 1018 (d) | 1 × 1018 (d) | 1 × 1020 (d) |
| | Bulk defect properties | | (cm−3) | Variable (A) | 6 × 1016 (D) | 1 × 1016 (D) | 1 × 1016 (D) | | (cm2) | 1.3 × 10−12 | 1 × 10−12 | 1 × 10−15 | 1 × 10−15 | | (cm2) | 1.5 × 10−15 | 1 × 10−15 | 1 × 10−12 | 1 × 10−12 |
| | Interface properties | | | | | | CZTS/CdS |
| | (eV) | | | | −0.115 | | (cm−2) | | | | 1011 (n) | | (cm2) | | | | 10−15 | | (cm2) | | | | 10−15 |
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(a) and (d) denote shallow acceptor and donor defects while (A) and (D) denote deep acceptor and donor defects and (n) denotes neutral defects.
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