Phase-field simulations of GaN growth by selective area epitaxy on complex mask geometries
Journal Article
·
· Journal of Applied Physics
- Univ. of Michigan, Ann Arbor, MI (United States)
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- 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:
- Energy Frontier Research Centers (EFRC) (United States). EFRC for Solid State Lighting Science (SSLS); Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE; USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC04-94AL85000; SC0000957
- OSTI ID:
- 1235275
- Alternate ID(s):
- OSTI ID: 1210766
OSTI ID: 1228244
OSTI ID: 22410218
- Report Number(s):
- SAND--2015-0722J; 563559
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 19 Vol. 117; ISSN 0021-8979
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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