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Title: Surfactant-induced chemical ordering of GaAsN:Bi

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.5045606· OSTI ID:1487329
 [1];  [1];  [1];  [1];  [1];  [2];  [1]
  1. Univ. of Michigan, Ann Arbor, MI (United States)
  2. 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
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

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  • Norman, Andrew G.; France, Ryan; Ptak, Aaron J.
  • Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, Vol. 29, Issue 3 https://doi.org/10.1116/1.3562512
journal May 2011
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Cited By (4)

Mapping the composition-dependence of the energy bandgap of GaAsNBi alloys journal August 2019
Impact of Bi incorporation on the evolution of microstructure during growth of low-temperature GaAs:Bi/Ga(As,Bi) layers journal August 2019
Atomic-Resolution EDX, HAADF, and EELS Study of GaAs1-xBix Alloys journal May 2020
GaAs1-xBix growth on Ge: anti-phase domains, ordering, and exciton localization journal February 2020

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