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Article: Spectral conversion with fluorescent microspheres for light emitting diodes
Title | Spectral conversion with fluorescent microspheres for light emitting diodes |
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Authors | |
Issue Date | 2008 |
Publisher | Optical Society of America. The Journal's web site is located at http://www.opticsexpress.org |
Citation | Optics Express, 2008, v. 16 n. 1, p. 13-18 How to Cite? |
Abstract | An innovative spectral conversion scheme for light emitting diodes using fluorescent microspheres has been demonstrated. An optimally mixed proportion of green and red fluorescent microspheres were coated onto a high-extraction- efficiency GaN micro-LED with emission centred at 470 nm. The microspheres self-assemble into ordered hexagonally arrays, forming regular and uniform coating layers. Devices with cool and warm white emission were achieved. The bluish-white LED has a luminous efficacy of 27.3 Im/W (at 20 mA) with CIE coordinates of (0.26, 0.28) and 8500K CCT, while the yellowish-white LED has a luminous efficacy of 26.67 Im/W (at 20 mA) with CIE coordinates of (0.36, 0.43) and 13000K CCT. © 2007 Optical Society of America. |
Persistent Identifier | http://hdl.handle.net/10722/73585 |
ISSN | 2023 Impact Factor: 3.2 2023 SCImago Journal Rankings: 0.998 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Hui, KN | en_HK |
dc.contributor.author | Lai, PT | en_HK |
dc.contributor.author | Choi, HW | en_HK |
dc.date.accessioned | 2010-09-06T06:52:47Z | - |
dc.date.available | 2010-09-06T06:52:47Z | - |
dc.date.issued | 2008 | en_HK |
dc.identifier.citation | Optics Express, 2008, v. 16 n. 1, p. 13-18 | en_HK |
dc.identifier.issn | 1094-4087 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/73585 | - |
dc.description.abstract | An innovative spectral conversion scheme for light emitting diodes using fluorescent microspheres has been demonstrated. An optimally mixed proportion of green and red fluorescent microspheres were coated onto a high-extraction- efficiency GaN micro-LED with emission centred at 470 nm. The microspheres self-assemble into ordered hexagonally arrays, forming regular and uniform coating layers. Devices with cool and warm white emission were achieved. The bluish-white LED has a luminous efficacy of 27.3 Im/W (at 20 mA) with CIE coordinates of (0.26, 0.28) and 8500K CCT, while the yellowish-white LED has a luminous efficacy of 26.67 Im/W (at 20 mA) with CIE coordinates of (0.36, 0.43) and 13000K CCT. © 2007 Optical Society of America. | en_HK |
dc.language | eng | en_HK |
dc.publisher | Optical Society of America. The Journal's web site is located at http://www.opticsexpress.org | en_HK |
dc.relation.ispartof | Optics Express | en_HK |
dc.rights | Optics Express. Copyright © Optical Society of America. | en_HK |
dc.title | Spectral conversion with fluorescent microspheres for light emitting diodes | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1094-4087&volume=16&spage=13&epage=&date=2008&atitle=Spectral+Conversion+with+fluorescent+microspheres+for+light+emitting+diodes | 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 | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1364/OE.16.000013 | en_HK |
dc.identifier.scopus | eid_2-s2.0-38049152504 | en_HK |
dc.identifier.hkuros | 146761 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-38049152504&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 16 | en_HK |
dc.identifier.issue | 1 | en_HK |
dc.identifier.spage | 13 | en_HK |
dc.identifier.epage | 18 | en_HK |
dc.identifier.isi | WOS:000252234800003 | - |
dc.publisher.place | United States | en_HK |
dc.identifier.scopusauthorid | Hui, KN=12139840100 | en_HK |
dc.identifier.scopusauthorid | Lai, PT=7202946460 | en_HK |
dc.identifier.scopusauthorid | Choi, HW=7404334877 | en_HK |
dc.identifier.issnl | 1094-4087 | - |