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Article: The contribution of sidewall light extraction to efficiencies of polygonal light-emitting diodes shaped with laser micromachining

TitleThe contribution of sidewall light extraction to efficiencies of polygonal light-emitting diodes shaped with laser micromachining
Authors
KeywordsPhysics engineering
Issue Date2010
PublisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jsp
Citation
Journal Of Applied Physics, 2010, v. 108 n. 2 How to Cite?
AbstractThe light extraction efficiencies of InGaN/GaN blue light-emitting diodes (LEDs) of different geometries ranging from a triangle to a decagon have been simulated by ray-tracing. The conventional rectangular LED was found to be the most inefficient among the investigated polygons, and light extraction through the device sidewalls was the key factor. The results were experimentally verified by fabricating LEDs shaped into polygons by nanosecond-pulsed laser micromachining, which proved the simulated results. The mechanism of light extrac-tion in polygonal LEDs is discussed in detail. © 2010 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/124673
ISSN
2015 Impact Factor: 2.101
2015 SCImago Journal Rankings: 0.603
ISI Accession Number ID
Funding AgencyGrant Number
Research Grant Council of Hong KongHKU 7118/09E
Funding Information:

This work was supported by a GRF grant of the Research Grant Council of Hong Kong (Project No. HKU 7118/09E).

References

 

DC FieldValueLanguage
dc.contributor.authorWang, XHen_HK
dc.contributor.authorLai, PTen_HK
dc.contributor.authorChoi, HWen_HK
dc.date.accessioned2010-10-31T10:47:46Z-
dc.date.available2010-10-31T10:47:46Z-
dc.date.issued2010en_HK
dc.identifier.citationJournal Of Applied Physics, 2010, v. 108 n. 2en_HK
dc.identifier.issn0021-8979en_HK
dc.identifier.urihttp://hdl.handle.net/10722/124673-
dc.description.abstractThe light extraction efficiencies of InGaN/GaN blue light-emitting diodes (LEDs) of different geometries ranging from a triangle to a decagon have been simulated by ray-tracing. The conventional rectangular LED was found to be the most inefficient among the investigated polygons, and light extraction through the device sidewalls was the key factor. The results were experimentally verified by fabricating LEDs shaped into polygons by nanosecond-pulsed laser micromachining, which proved the simulated results. The mechanism of light extrac-tion in polygonal LEDs is discussed in detail. © 2010 American Institute of Physics.en_HK
dc.languageengen_HK
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jspen_HK
dc.relation.ispartofJournal of Applied Physicsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsJournal of Applied Physics. Copyright © American Institute of Physics.-
dc.rightsCopyright (2010) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of Applied Physics, 2010, v. 108 n. 2 article no. 023110 and may be found at http://jap.aip.org/resource/1/japiau/v108/i2/p023110_s1.-
dc.subjectPhysics engineering-
dc.titleThe contribution of sidewall light extraction to efficiencies of polygonal light-emitting diodes shaped with laser micromachiningen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0021-8979&volume=108&issue=2 article no. 023110&spage=&epage=&date=2010&atitle=The+contribution+of+sidewall+light+extraction+to+efficiencies+of+polygonal+light-emitting+diodes+shaped+with+laser+micromachiningen_HK
dc.identifier.emailLai, PT:laip@eee.hku.hken_HK
dc.identifier.emailChoi, HW:hwchoi@eee.hku.hken_HK
dc.identifier.authorityLai, PT=rp00130en_HK
dc.identifier.authorityChoi, HW=rp00108en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1063/1.3456445en_HK
dc.identifier.scopuseid_2-s2.0-77955780897en_HK
dc.identifier.hkuros175218en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77955780897&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume108en_HK
dc.identifier.issue2en_HK
dc.identifier.isiWOS:000280909900010-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridWang, XH=34168501000en_HK
dc.identifier.scopusauthoridLai, PT=7202946460en_HK
dc.identifier.scopusauthoridChoi, HW=7404334877en_HK

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