Surfactant-induced chemical ordering of GaAsN:Bi
- Univ. of Michigan, Ann Arbor, MI (United States)
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
In this study, we have examined the influence of an incorporating surfactant on chemical ordering in GaAsN:Bi alloys. Epitaxy with a (2 x 1) reconstruction leads to the formation of GaAsN alloys, while the introduction of a Bi flux induces long-range chemical ordering of the {111} planes of GaAsN:Bi. We propose a mechanism in which Bi enhances the alignment of dimer rows along the [110] direction, facilitating N incorporation beneath surface dimers and Bi incorporation between dimer rows to form alternating N-rich and Bi-rich {111} planes. In conclusion, these findings suggest a route to tailoring the local atomic environment of N and Bi atoms in a wide range of emerging dilute nitride-bismide alloys.
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; USDOE Office of Science (SC), Graduate Student Research Program
- Grant/Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1487329
- Report Number(s):
- NREL/JA-5K00-72462
- Journal Information:
- Applied Physics Letters, Vol. 113, Issue 21; ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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