Review Article
A Status Review on Cu2ZnSn(S, Se)4-Based Thin-Film Solar Cells
Table 1
Various properties of secondary phases observed in CZTS materials.
| | Properties | ZnS | Cu2S | SnS2 | Cu2SnS3 |
| | Band gap | 3.54-3.68 eV | 1.21 eV | 2.2 eV | 0.98-1.35 eV | | Electrical properties | Insulator | -type, highly defective | -type | -type | | Structural properties | Sphalerite and wurtzite | Chalcocite | Rhombohedral | Cubic and tetragonal | | Impact on solar cell performance | Reduces device active area | Metallic and short the solar cell | Forms diodes also, barriers for carrier collection | Affects carrier collection efficiency |
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