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Title: A review of the synthesis of reduced defect density InxGa1-xN for all indium compositions

Journal Article · · Solid-State Electronics

A review of metal rich and nitrogen rich (N-rich), low-temperature grown InxGa1-xN is provided, focusing on two low-temperature approaches that have resulted in non-phase separated InxGa1-xN. The metal modulated epitaxy (MME) and N-rich, low temperature approaches to the reduction of defects in InxGa1-xN are described and are capable of growing InxGa1-xN throughout the miscibility gap. MME films remain smooth at all thicknesses but show device quality material primarily for x < 0.2 and x > 0.6. Low temperature, N-rich grown films show a critical thickness extend well beyond the theoretical values and results in slower relaxation through the 0.2 < x < 0.6 range most interesting for light emitters and solar cells. This reduced defect density results in improved optical emission, but due to increased roughening with increased thickness, low temperature, N-rich films are limited to thin layers. Future thick InxGa1-xN substrates are necessary to increase design freedom, as well as improve optoelectronic device performance. The initial results with films up to 800 nm are shown to display evidence of defect annihilation which could be promising for future thick optoelectronic templates and thick devices.

Research Organization:
Arizona State Univ., Tempe, AZ (United States)
Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E); National Science Foundation (NSF)
Grant/Contract Number:
AR0000470; CA EEC-1041895
OSTI ID:
1538853
Alternate ID(s):
OSTI ID: 1550203
Journal Information:
Solid-State Electronics, Vol. 136, Issue C; ISSN 0038-1101
Publisher:
ElsevierCopyright 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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Droplet Controlled Growth Dynamics in Molecular Beam Epitaxy of Nitride Semiconductors journal July 2018

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