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dc.contributor.authorBarrett, R M
dc.contributor.authorAhumada-Lazo, R
dc.contributor.authorAlanis, J A
dc.contributor.authorParkinson, P
dc.contributor.authorChurch, S A
dc.contributor.authorKappers, M J
dc.contributor.authorOliver, R A
dc.contributor.authorBinks, D J; email: david.binks@manchester.ac.uk
dc.date.accessioned2021-06-30T16:38:13Z
dc.date.available2021-06-30T16:38:13Z
dc.date.issued2021-05
dc.identifierhttps://chesterrep.openrepository.com/bitstream/handle/10034/625099/metadata.xml?sequence=2
dc.identifierhttps://chesterrep.openrepository.com/bitstream/handle/10034/625099/pdf.pdf?sequence=3
dc.identifier.citationJournal of Physics: Conference Series, volume 1919, issue 1, page 012011
dc.identifier.urihttp://hdl.handle.net/10034/625099
dc.descriptionFrom IOP Publishing via Jisc Publications Router
dc.descriptionHistory: ppub 2021-05, open-access 2021-05-01
dc.descriptionPublication status: Published
dc.description.abstractAbstract: Micro-photoluminescence maps reveal micron-scale spatial variation in intensity, peak emission energy and bandwidth across InGaN/GaN quantum wells. To investigate the effect of this spatial variation on measurements of the dependence of emission efficiency on carrier density, excitation power-dependent emission was collected from a bright and dark region on each of blue-and green emitting samples. The onset of efficiency droop was found to occur at a greater carrier density in the dark regions than in the bright, by factors of 1.2 and 1.8 in the blue and green-emitting samples, respectively. By spatially integrating the emission from progressively larger areas, it is also shown that collection areas greater than ∼50 μm in diameter are required to reduce the intensity variation to less than 10%.
dc.languageen
dc.publisherIOP Publishing
dc.rightsLicence for this article: http://creativecommons.org/licenses/by/3.0/
dc.sourcepissn: 1742-6588
dc.sourceeissn: 1742-6596
dc.subjectPaper
dc.titleEffect of Micron-scale Photoluminescence Variation on Droop Measurements in InGaN/GaN Quantum Wells
dc.typearticle
dc.date.updated2021-06-30T16:38:13Z


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