Table 1 Formation energy (in eV) of the Cl-related defects in CdTe under study. The Fermi energy is set at the valence band maximum. Lower values for the formation energy, in general less than 1 eV, indicates the most likely defects to be found.
Defect | ΔHf (Te rich) | ΔHf (Cd rich) |
|---|---|---|
(ClTe)1+ | −0.07 | −0.65 |
(ClTe)0 | 1.22 | 0.63 |
(ClCd)1− | 2.92 | 4.68 |
(ClCd)0 | 2.82 | 4.57 |
[(ClTe-VCd) (Cs)]1+ | 1.11 | 1.70 |
[(ClTe-VCd) (Cs)]0 | 2.42 | 3.00 |
[(ClTe-VCd) (C3v)]1− | 1.78 | 2.36 |
[(ClTe-VCd) (C3v)]0 | 1.68 | 2.27 |
[(2ClTe-VCd) (d)]2+ | 0.71 | 0.71 |
[(2ClTe-VCd) (d)]1+ | 1.81 | 1.81 |
[(2ClTe-VCd) (d)]0 | 3.06 | 3.06 |
[(2ClTe-VCd)]0 | 0.90 | 0.90 |
(TeCd)2+ | 0.53 | 2.87 |
(TeCd)0 | 1.29 | 3.63 |
(ClTe-TeCd)1+ | 0.46 | 2.21 |
(ClTe-TeCd)0 | 1.82 | 3.57 |