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Microstructure variation in thick AlInN films grown on c-plane GaN on sapphire by metalorganic chemical vapor deposition

•300-nm-thick AlInN films were grown on GaN on sapphire by MOCVD.•AlInN surfaces drastically varied around a lattice-matching composition.•Optical constants and energy bandgaps were determined for flat-surface AlInN films. 300-nm-thick AlInN films with InN molar fractions ranging from 0.114 to 0.197...

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Published in:Journal of crystal growth 2019-01, Vol.506, p.40-44
Main Authors: Miyoshi, Makoto, Yamanaka, Mizuki, Egawa, Takashi, Takeuchi, Tetsuya
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container_title Journal of crystal growth
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creator Miyoshi, Makoto
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description •300-nm-thick AlInN films were grown on GaN on sapphire by MOCVD.•AlInN surfaces drastically varied around a lattice-matching composition.•Optical constants and energy bandgaps were determined for flat-surface AlInN films. 300-nm-thick AlInN films with InN molar fractions ranging from 0.114 to 0.197 were grown by metalorganic chemical vapor deposition on c-plane GaN on sapphire. It was confirmed that no lattice relaxation occurred for samples with InN molar fractions from 0.144 to 0.197, and the InAlN films with low InN molar fractions showed a relative smooth surface. However, it turned into a granular surface morphology resulting from a columnar polycrystalline structure when the InN molar fraction exceeded a compositional boundary of in-plane lattice matching. As for the smooth-surface AlInN single-layers, the optical constants as well as energy bandgaps were determined.
doi_str_mv 10.1016/j.jcrysgro.2018.09.049
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Semiconducting ternary compounds</topic><topic>Chemical vapor deposition</topic><topic>Columnar structure</topic><topic>Lattice matching</topic><topic>Metalorganic chemical vapor deposition</topic><topic>Morphology</topic><topic>Organic chemistry</topic><topic>Sapphire</topic><topic>Thick films</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Miyoshi, Makoto</creatorcontrib><creatorcontrib>Yamanaka, Mizuki</creatorcontrib><creatorcontrib>Egawa, Takashi</creatorcontrib><creatorcontrib>Takeuchi, Tetsuya</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of crystal growth</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Miyoshi, Makoto</au><au>Yamanaka, Mizuki</au><au>Egawa, Takashi</au><au>Takeuchi, Tetsuya</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Microstructure variation in thick AlInN films grown on c-plane GaN on sapphire by metalorganic chemical vapor deposition</atitle><jtitle>Journal of crystal growth</jtitle><date>2019-01-15</date><risdate>2019</risdate><volume>506</volume><spage>40</spage><epage>44</epage><pages>40-44</pages><issn>0022-0248</issn><eissn>1873-5002</eissn><abstract>•300-nm-thick AlInN films were grown on GaN on sapphire by MOCVD.•AlInN surfaces drastically varied around a lattice-matching composition.•Optical constants and energy bandgaps were determined for flat-surface AlInN films. 300-nm-thick AlInN films with InN molar fractions ranging from 0.114 to 0.197 were grown by metalorganic chemical vapor deposition on c-plane GaN on sapphire. 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source ScienceDirect Journals
subjects A1. Crystal morphology
A3. Metalorganic vapor phase epitaxy
B1. Nitrides
B2. Semiconducting III-V materials
B2. Semiconducting ternary compounds
Chemical vapor deposition
Columnar structure
Lattice matching
Metalorganic chemical vapor deposition
Morphology
Organic chemistry
Sapphire
Thick films
title Microstructure variation in thick AlInN films grown on c-plane GaN on sapphire by metalorganic chemical vapor deposition
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