Selection Rule of Preferred Doping Site for n-Type Oxides
Using first-principles calculations and analysis, we show that to create shallow n-type dopants in oxides, anion site doping is preferred for more covalent oxides such as SnO{sub 2} and cation site doping is preferred for more ionic oxides such as ZnO. This is because for more ionic oxides, the conduction band minimum (CBM) state actually contains a considerable amount of O 3s orbitals, thus anion site doping can cause large perturbation on the CBM and consequently produces deeper donor levels. We also show that whether it is cation site doping or anion site doping, the oxygen-poor condition should always be used.
- Research Organization:
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
- DOE Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1047926
- Report Number(s):
- NREL/JA-5900-54191; APPLAB; TRN: US201216%%559
- Journal Information:
- Applied Physics Letters, Vol. 100, Issue 26; Related Information: Article No. 262109; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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