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dc.contributor.authorKusch, Gunnar
dc.contributor.authorConroy, Michele
dc.contributor.authorLi, Haoning
dc.contributor.authorEdwards, Paul R.
dc.contributor.authorZhao, Chao
dc.contributor.authorOoi, Boon S.
dc.contributor.authorPugh, Jon
dc.contributor.authorCryan, Martin J.
dc.contributor.authorParbrook, Peter J.
dc.contributor.authorMartin, Robert W.
dc.date.accessioned2018-02-01T11:45:54Z
dc.date.available2018-02-01T11:45:54Z
dc.date.issued2018-01-29
dc.identifier.citationKusch G, Conroy M, Li H, Edwards PR, Zhao C, et al. (2018) Multi-wavelength emission from a single InGaN/GaN nanorod analyzed by cathodoluminescence hyperspectral imaging. Scientific Reports 8. Available: http://dx.doi.org/10.1038/s41598-018-20142-5.
dc.identifier.issn2045-2322
dc.identifier.pmid29379097
dc.identifier.doi10.1038/s41598-018-20142-5
dc.identifier.urihttp://hdl.handle.net/10754/627012
dc.description.abstractMultiple luminescence peaks emitted by a single InGaN/GaN quantum-well(QW) nanorod, extending from the blue to the red, were analysed by a combination of electron microscope based imaging techniques. Utilizing the capability of cathodoluminescence hyperspectral imaging it was possible to investigate spatial variations in the luminescence properties on a nanoscale. The high optical quality of a single GaN nanorod was demonstrated, evidenced by a narrow band-edge peak and the absence of any luminescence associated with the yellow defect band. Additionally two spatially confined broad luminescence bands were observed, consisting of multiple peaks ranging from 395 nm to 480 nm and 490 nm to 650 nm. The lower energy band originates from broad c-plane QWs located at the apex of the nanorod and the higher energy band from the semipolar QWs on the pyramidal nanorod tip. Comparing the experimentally observed peak positions with peak positions obtained from plane wave modelling and 3D finite difference time domain(FDTD) modelling shows modulation of the nanorod luminescence by cavity modes. By studying the influence of these modes we demonstrate that this can be exploited as an additional parameter in engineering the emission profile of LEDs.
dc.description.sponsorshipWe acknowledge funding from the Engineering and Physical Sciences Research Council (EPSRC) (EP/M003132/1) of the UK. The data associated with this research is available at DOI: 10.1038/s41598-018-20142-5. This research was enabled by the Irish Higher Education Authority Programme for Research in Third Level Institutions Cycles 4 and 5 via the INSPIRE and TYFFANI projects, and by Science Foundation Ireland (SFI) under Grant no. SFI/10/IN.1/I2993. PJP acknowledges funding from SFI Engineering Professorship scheme (07/EN/E001A) and MC acknowledges PhD research scholarship from INSPIRE.
dc.publisherSpringer Nature
dc.relation.urlhttps://www.nature.com/articles/s41598-018-20142-5
dc.rightsThis 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.titleMulti-wavelength emission from a single InGaN/GaN nanorod analyzed by cathodoluminescence hyperspectral imaging
dc.typeArticle
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering Program
dc.contributor.departmentPhotonics Laboratory
dc.identifier.journalScientific Reports
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionDepartment of Physics, SUPA, University of Strathclyde, Glasgow, G4 0NG, United Kingdom
dc.contributor.institutionPacific Northwest National Laboratory, Richland, WA, United States of America
dc.contributor.institutionSchool of Engineering, University College Cork, College Road, Cork, Ireland
dc.contributor.institutionTyndall National Institute, University College Cork, Lee Maltings, Dyke Parade, Cork, Ireland
dc.contributor.institutionDepartment of Electrical and Electronic Engineering, University of Bristol, Bristol, BS8 1UB, United Kingdom
kaust.personZhao, Chao
kaust.personOoi, Boon S.
refterms.dateFOA2018-06-13T12:11:29Z
dc.date.published-online2018-01-29
dc.date.published-print2018-12


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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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
Except where otherwise noted, this item's license is described as 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.