Bowing parameters for zinc-blende Al{sub 1{minus}{ital x}}Ga{sub {ital x}}N and Ga{sub 1{minus}{ital x}}In{sub {ital x}}N

Journal Article · Mon May 29 04:00:00 EDT 1995 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.114274· OSTI ID:64322

Wright, A F; Nelson, J S ^[1]

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1. Sandia National Laboratories, Albuquerque, New Mexico 87185-1415 (United States)

First-principles calculations have been used to determine bowing parameters for disordered zinc-blende Al{sub 1{minus}{ital x}}Ga{sub {ital x}}N and Ga{sub 1{minus}{ital x}}In{sub {ital x}}N. The direct transition at {Gamma} is found to bow downward for both materials with parameters +0.53 and +1.02 eV, respectively, while the {Gamma}-to-{ital X} transition bows upward for Al{sub 1{minus}{ital x}}Ga{sub {ital x}}N (parameter {minus}0.10 eV) and downward for Ga{sub 1{minus}{ital x}}In{sub {ital x}}N (parameter +0.38 eV). The similarity of the calculated bulk zinc-blende and wurtzite {Gamma}-point transitions also allows estimates to be made of the energy gap versus composition for wurtzite alloys. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.

• Research Organization: Sandia National Laboratory
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 64322
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 22 Vol. 66; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM NITRIDES
CHEMICAL COMPOSITION
ELECTRONIC STRUCTURE
ENERGY-LEVEL TRANSITIONS
GALLIUM NITRIDES
INDIUM NITRIDES
OPTICAL PROPERTIES
TERNARY ALLOY SYSTEMS