Table 4. Average Crystallites Size (D) and the Unit Cell Parameters (a and c) of the Tetragonal CZTS Phase in the SLG\CTS\ZnS-150 and SLG\CTS\ZnS-200 Samples Annealed under S and Sn + S Atmospheres for 30, 45, and 60 min.
| sulfur
atmosphere |
tin
+ sulfur atmosphere |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SLG\CTS\ZnS-150 | SLG\CTS\ZnS-200 | SLG\CTS\ZnS-150 | SLG\CTS\ZnS-200 | |||||||||
| 30 min | 45 min | 60 min | 30 min | 45 min | 60 min | 30 min | 45 min | 60 min | 30 min | 45 min | 60 min | |
| D (nm) | 23 | 23 | 24 | 18 | 15 | 19 | 22 | 20 | 19 | 17 | 21 | 20 |
| a (Å) | 5.427 | 5.426 | 5.431 | 5.434 | 5.434 | 5.437 | 5.431 | 5.432 | 5.432 | 5.430 | 5.430 | 5.430 |
| c (Å) | 10.834 | 10.855 | 10.837 | 10.831 | 10.852 | 10.872 | 10.868 | 10.868 | 10.864 | 10.863 | 10.870 | 10.861 |