Theory of reduced built-in polarization field in nitride-based quantum dots

Show simple item record Schulz, Stefan O'Reilly, Eoin P. 2021-01-07T11:01:37Z 2021-01-07T11:01:37Z 2010-07-27
dc.identifier.citation Schulz, S. and O'Reilly, E. P. (2010) 'Theory of reduced built-in polarization field in nitride-based quantum dots', Physical Review B, 82, 033411 (4pp). doi: 10.1103/PhysRevB.82.033411 en
dc.identifier.volume 82 en
dc.identifier.startpage 1 en
dc.identifier.endpage 4 en
dc.identifier.issn 1098-0121
dc.identifier.issn 2469-9950
dc.identifier.doi 10.1103/PhysRevB.82.033411 en
dc.description.abstract We use a surface integral method to show that the polarization potential in an InGaN/GaN quantum dot (QD) grown along the [0001] direction is strongly reduced compared to that in a quantum well (QW) of the same height. We use simple analytic expressions and different dot geometries to show that the reduction originates from two effects (i) the reduction in the QD [0001] surface area and (ii) strain redistributions in the QD system. The In composition can therefore be increased in a QD compared to a QW, enabling efficient recombination to longer wavelengths in InGaN QD structures. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Physical Society en
dc.rights © 2010, American Physical Society. All rights reserved. en
dc.subject Growth en
dc.subject Polarization en
dc.subject InGaN/GaN en
dc.subject Quantum dot en
dc.subject QD en
dc.subject Quantum well en
dc.subject QW en
dc.title Theory of reduced built-in polarization field in nitride-based quantum dots en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Stefan Schulz, Tyndall Theory Modelling & Design Centre, University College Cork, Cork, Ireland. +353-21-490-3000 Email: en
dc.internal.availability Full text available en 2021-01-07T10:47:47Z
dc.description.version Published Version en
dc.internal.rssid 348783377
dc.internal.wokid WOS:000280366300001
dc.contributor.funder Science Foundation Ireland en
dc.contributor.funder Irish Research Council for Science, Engineering and Technology en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Physical Review B en
dc.internal.copyrightchecked Yes
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress en
dc.identifier.articleid 033411 en
dc.identifier.eissn 2469-9969

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