The electronic structures of pure ZnS, N-doped and Al-N codoped zinc-blende ZnS were calculated by using first-principles ultrasoft pseudo-potential approach of the planar wave based upon the density functional theory, and the band structure, density of states and Mulliken charge population were studied. The calculated results revealed that N-doped ZnS caused formation of deep N acceptor levels in the band gap and the carriers (hole) which were provided by N 2p states were localized near the top of the valence band. But the codoping calculation revealed that the acceptor levels showed broadening and non-localizing, and the concentration of impurities, the stability of the system were enhanced. Our calculations indicate that codoping of Al and N is in more favor of the formation of p-type ZnS.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |