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Title: First-principles study of bandgap bowing in BGaN alloys

Journal Article · · Journal of Applied Physics
DOI: https://doi.org/10.1063/1.5111414 · OSTI ID:1611497

III-nitride alloys continue to drive advances in electronic and optoelectronic devices. Recently, boron-containing nitride alloys have been explored with the goal of expanding the range of applications. Using first-principles calculations with a hybrid functional, we study the electronic structure of wurtzite BGaN alloys. Strong bandgap bowing is observed, with a concentration-dependent bowing parameter. Due to the strong bandgap bowing, the fundamental bandgap in strain-free alloys is effectively unchanged for the lowest B concentrations. A crossover from a direct to an indirect bandgap occurs for B concentrations greater than 50%.

Research Organization:
Univ. of California, Santa Barbara, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0010689
OSTI ID:
1611497
Alternate ID(s):
OSTI ID: 1560705
Journal Information:
Journal of Applied Physics, Vol. 126, Issue 9; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

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Cited By (2)

Single crystalline boron rich B(Al)N alloys grown by MOVPE journal January 2020
Highly Mismatched Semiconductor Alloys: From Atoms to Devices journal January 2020