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Title: Phase-field simulations of GaN growth by selective area epitaxy on complex mask geometries

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.4921053· OSTI ID:1235275
 [1];  [2];  [3];  [1]
  1. Univ. of Michigan, Ann Arbor, MI (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  3. Yale Univ., New Haven, CT (United States)

Three-dimensional phase-field simulations of GaN growth by selective area epitaxy were performed. Furthermore, this model includes a crystallographic-orientation-dependent deposition rate and arbitrarily complex mask geometries. The orientation-dependent deposition rate can be determined from experimental measurements of the relative growth rates of low-index crystallographic facets. Growth on various complex mask geometries was simulated on both c-plane and a-plane template layers. Agreement was observed between simulations and experiment, including complex phenomena occurring at the intersections between facets. The sources of the discrepancies between simulated and experimental morphologies were also investigated. We found that the model provides a route to optimize masks and processing conditions during materials synthesis for solar cells, light-emitting diodes, and other electronic and opto-electronic applications.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Energy Frontier Research Centers (EFRC) (United States). EFRC for Solid State Lighting Science (SSLS)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000; SC0000957; ACI-1053575
OSTI ID:
1235275
Alternate ID(s):
OSTI ID: 1228244
Report Number(s):
SAND-2015-0722J; 563559
Journal Information:
Journal of Applied Physics, Vol. 117, Issue 19; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 13 works
Citation information provided by
Web of Science

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Numerical Modeling of Localized Corrosion Using Phase-Field and Smoothed Boundary Methods journal January 2018