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Article: The contribution of sidewall light extraction to efficiencies of polygonal light-emitting diodes shaped with laser micromachining
Title | The contribution of sidewall light extraction to efficiencies of polygonal light-emitting diodes shaped with laser micromachining | ||||
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Authors | |||||
Keywords | Physics engineering | ||||
Issue Date | 2010 | ||||
Publisher | American 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, article no. 023110 How to Cite? | ||||
Abstract | The 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 Identifier | http://hdl.handle.net/10722/124673 | ||||
ISSN | 2023 Impact Factor: 2.7 2023 SCImago Journal Rankings: 0.649 | ||||
ISI Accession Number ID |
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 Field | Value | Language |
---|---|---|
dc.contributor.author | Wang, XH | en_HK |
dc.contributor.author | Lai, PT | en_HK |
dc.contributor.author | Choi, HW | en_HK |
dc.date.accessioned | 2010-10-31T10:47:46Z | - |
dc.date.available | 2010-10-31T10:47:46Z | - |
dc.date.issued | 2010 | en_HK |
dc.identifier.citation | Journal of Applied Physics, 2010, v. 108 n. 2, article no. 023110 | - |
dc.identifier.issn | 0021-8979 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/124673 | - |
dc.description.abstract | The 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.language | eng | en_HK |
dc.publisher | American Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jsp | en_HK |
dc.relation.ispartof | Journal of Applied Physics | en_HK |
dc.rights | Copyright 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 https://doi.org/10.1063/1.3456445 | - |
dc.subject | Physics engineering | - |
dc.title | The contribution of sidewall light extraction to efficiencies of polygonal light-emitting diodes shaped with laser micromachining | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://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+micromachining | en_HK |
dc.identifier.email | Lai, PT:laip@eee.hku.hk | en_HK |
dc.identifier.email | Choi, HW:hwchoi@eee.hku.hk | en_HK |
dc.identifier.authority | Lai, PT=rp00130 | en_HK |
dc.identifier.authority | Choi, HW=rp00108 | en_HK |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1063/1.3456445 | en_HK |
dc.identifier.scopus | eid_2-s2.0-77955780897 | en_HK |
dc.identifier.hkuros | 175218 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-77955780897&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 108 | en_HK |
dc.identifier.issue | 2 | en_HK |
dc.identifier.spage | article no. 023110 | - |
dc.identifier.epage | article no. 023110 | - |
dc.identifier.isi | WOS:000280909900010 | - |
dc.publisher.place | United States | en_HK |
dc.identifier.scopusauthorid | Wang, XH=34168501000 | en_HK |
dc.identifier.scopusauthorid | Lai, PT=7202946460 | en_HK |
dc.identifier.scopusauthorid | Choi, HW=7404334877 | en_HK |
dc.identifier.issnl | 0021-8979 | - |