A method to improve the light emission efficiency of Mg-doped GaN

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dc.contributor.author Gelhausen, O
dc.contributor.author Phillips, MR
dc.contributor.author Goldys, EM
dc.date.accessioned 2009-06-26T04:10:30Z
dc.date.issued 2003-12-07
dc.identifier.citation Journal of Physics D: Applied Physics, 2003, 36 (23), pp. 2976 - 2979
dc.identifier.issn 0022-3727
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/411
dc.description.abstract Scanning cathodoluminescence (CL) spectroscopy and imaging were used to study the effect of post-growth processing on the CL efficiency of metal-organic vapour phase epitaxy-grown Mg-doped GaN. In this work, two treatments, thermal annealing in high-purity gaseous atmospheres (N2, O2 and H2(5%)/N2) and low-energy electron beam irradiation (LEEBI), have been investigated. Post-growth annealing in a H2/N2 atmosphere followed by LEEBI leads to a significant enhancement of the free electron-to-bound Mg-acceptor (e, Mg) CL emission and a reduction of nonradiative centres involving native defects. The presented results demonstrate that the combination of post-growth annealing in a H2/N2 atmosphere and LEEBI dissociation of Mg-H complex acceptors significantly improves the light emitting efficiency of Mg-doped p-type GaN. Conversely, the samples annealed in a N2 or O2 atmosphere exhibit a reduced (e, Mg) emission after both annealing and LEEBI treatment.
dc.language eng
dc.relation.isbasedon 10.1088/0022-3727/36/23/018
dc.title A method to improve the light emission efficiency of Mg-doped GaN
dc.type Journal Article
dc.description.version Published
dc.parent Journal of Physics D: Applied Physics
dc.journal.volume 23
dc.journal.volume 36
dc.journal.number 23 en_US
dc.publocation Bristol, UK en_US
dc.identifier.startpage 2976 en_US
dc.identifier.endpage 2979 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 0912 Materials Engineering
dc.for 0204 Condensed Matter Physics
dc.personcode 810070
dc.percentage 80 en_US
dc.classification.name Condensed Matter Physics en_US
dc.classification.type FOR-08 en_US
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Strength - Materials and Technology for Energy Efficiency
utslib.copyright.status Closed Access
utslib.copyright.date 2015-04-15 12:17:09.805752+10
pubs.consider-herdc true
utslib.collection.history General Collection (ID: 346) [2015-05-15T14:11:04+10:00]
utslib.collection.history Closed (ID: 3)

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