Bandgap and refractive index estimates of InAlN and related nitrides across their full composition ranges

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dc.contributor.authorAlam, Shahab N.
dc.contributor.authorZubialevich, Vitaly Z.
dc.contributor.authorGhafary, Bijan
dc.contributor.authorParbrook, Peter J.
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderHigher Education Authorityen
dc.contributor.funderMinistry of Science Research and Technologyen
dc.date.accessioned2021-03-11T11:51:27Z
dc.date.available2021-03-11T11:51:27Z
dc.date.issued2020-10-01
dc.date.updated2021-03-05T13:34:29Z
dc.description.abstractIII-Nitride bandgap and refractive index data are of direct relevance for the design of (In, Ga, Al)N-based photonic and electronic devices. The bandgaps and bandgap bowing parameters of III-nitrides across the full composition range are reviewed with a special emphasis on InxAl1−xN, where less consensus was reached in the literature previously. Considering the available InAlN data, including those recently reported for low indium contents, empirical formulae for InAlN bandgap and bandgap bowing parameter are proposed. Applying the generalised bandgap data, the refractive index dispersion data available in the literature for III-N alloys is fitted using the Adachi model. For this purpose, a formalism involving a parabolic dependence of the Adachi parameters on the dimensionless bandgap ξEg=(Eg,AxB1−xN−Eg,BN)/(Eg,AN−Eg,BN) of the corresponding ternary alloys is used rather than one directly invoking the alloy composition.en
dc.description.sponsorshipScience Foundation Ireland (SFI under Grants No. SFI/10/IN.1/I2993 and SFI/12/RC/2276_P2); Irish Higher Education Authority (HEA Programme for Research in Third Level Institutions Cycles 4 and 5 via the INSPIRE and TYFFANI projects); Iranian Ministry of Science, Research and Technology (Studentship)en
dc.description.statusPeer revieweden
dc.description.versionSubmitted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid16205en
dc.identifier.citationAlam, S. N., Zubialevich, V. Z., Ghafary, B. and Parbrook, P. J. (2020) 'Bandgap and refractive index estimates of InAlN and related nitrides across their full composition ranges', Scientific Reports, 10(1) 16205 (9 pp). doi: 10.1038/s41598-020-73160-7en
dc.identifier.doi10.1038/s41598-020-73160-7en
dc.identifier.endpage9en
dc.identifier.issn2045-2322
dc.identifier.journaltitleScientific Reportsen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/11130
dc.identifier.volume10en
dc.language.isoenen
dc.publisherSpringer Natureen
dc.relation.urihttps://www.nature.com/articles/s41598-020-73160-7
dc.rights© The Authors 2021. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectDistributed Bragg reflectorsen
dc.subjectMolecular beam epitaxyen
dc.subjectGap bowing parameteren
dc.subjectOptical propertiesen
dc.subjectDielectric functionen
dc.subjectPlane ganen
dc.subjectFilmsen
dc.subjectAlxga1-xnen
dc.subjectGrowthen
dc.subjectInxga1-xnen
dc.titleBandgap and refractive index estimates of InAlN and related nitrides across their full composition rangesen
dc.typeArticle (peer-reviewed)en
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