File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Conference Paper: Polychromatic emission from fluorescent-microsphere-coated LEDs

TitlePolychromatic emission from fluorescent-microsphere-coated LEDs
Authors
Issue Date2008
PublisherWiley - V C H Verlag GmbH & Co KGaA. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/102519628
Citation
The 7th International Conference of Nitride Semiconductors (ICNS-7), Las Vegas, NV., 16-21 September 2007. In Physica Status Solidi (C) Current Topics In Solid State Physics, 2008, v. 5 n. 6, p. 2201-2203 How to Cite?
AbstractWhite light LEDs using fluorescent microspheres as color conversion agents are demonstrated. The hexagonal ordered arrays of green and red fluorescence microspheres were coated on the blue micro-hexLED centered at 480 nm by microspheres coating technique. At optimal mixed portion of green and red microspheres, white light emission is generated by a combination of blue light from LED and down conversion of fluorescence emission of green and red microspheres by blue excitation light. An overall efficiency of more than 70% is obtained by this new approach. The enhanced efficiency is attributed to two main properties of ordered micropsheres arrays: (1) efficient color conversion and (2) efficient light out-coupling via volumetric light scattering. The resultant LED has lumnious efficiency of 31.8 lm/W with CIE coordinates of (0.30, 0.31). We have demonstrated an alternative solution of producing white light emission, apart from existing down conversion of yellow phosphor with blue or UV LED and multichip LEDs. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.
DescriptionThis journal issue entitled: Special Issue: 7th International Conference on Nitride Semiconductors (ICNS-7)
Persistent Identifierhttp://hdl.handle.net/10722/73604
ISSN
2015 SCImago Journal Rankings: 0.392
References

 

DC FieldValueLanguage
dc.contributor.authorHui, KNen_HK
dc.contributor.authorNg, WNen_HK
dc.contributor.authorLeung, CHen_HK
dc.contributor.authorLai, PTen_HK
dc.contributor.authorChoi, HWen_HK
dc.date.accessioned2010-09-06T06:52:59Z-
dc.date.available2010-09-06T06:52:59Z-
dc.date.issued2008en_HK
dc.identifier.citationThe 7th International Conference of Nitride Semiconductors (ICNS-7), Las Vegas, NV., 16-21 September 2007. In Physica Status Solidi (C) Current Topics In Solid State Physics, 2008, v. 5 n. 6, p. 2201-2203en_HK
dc.identifier.issn1862-6351en_HK
dc.identifier.urihttp://hdl.handle.net/10722/73604-
dc.descriptionThis journal issue entitled: Special Issue: 7th International Conference on Nitride Semiconductors (ICNS-7)-
dc.description.abstractWhite light LEDs using fluorescent microspheres as color conversion agents are demonstrated. The hexagonal ordered arrays of green and red fluorescence microspheres were coated on the blue micro-hexLED centered at 480 nm by microspheres coating technique. At optimal mixed portion of green and red microspheres, white light emission is generated by a combination of blue light from LED and down conversion of fluorescence emission of green and red microspheres by blue excitation light. An overall efficiency of more than 70% is obtained by this new approach. The enhanced efficiency is attributed to two main properties of ordered micropsheres arrays: (1) efficient color conversion and (2) efficient light out-coupling via volumetric light scattering. The resultant LED has lumnious efficiency of 31.8 lm/W with CIE coordinates of (0.30, 0.31). We have demonstrated an alternative solution of producing white light emission, apart from existing down conversion of yellow phosphor with blue or UV LED and multichip LEDs. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.en_HK
dc.languageengen_HK
dc.publisherWiley - V C H Verlag GmbH & Co KGaA. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/102519628en_HK
dc.relation.ispartofPhysica Status Solidi (C) Current Topics in Solid State Physicsen_HK
dc.titlePolychromatic emission from fluorescent-microsphere-coated LEDsen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1610-1634&volume=5&spage=2201&epage=&date=2008&atitle=Polychromatic+Emission+from+Fluorescent-Microsphere-Coated+LEDsen_HK
dc.identifier.emailLeung, CH: chleung@eee.hku.hken_HK
dc.identifier.emailLai, PT: laip@eee.hku.hken_HK
dc.identifier.emailChoi, HW: hwchoi@eee.hku.hken_HK
dc.identifier.authorityLeung, CH=rp00146en_HK
dc.identifier.authorityLai, PT=rp00130en_HK
dc.identifier.authorityChoi, HW=rp00108en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/pssc.200778545en_HK
dc.identifier.scopuseid_2-s2.0-77951213736en_HK
dc.identifier.hkuros146759en_HK
dc.identifier.hkuros150358-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77951213736&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume5en_HK
dc.identifier.issue6en_HK
dc.identifier.spage2201en_HK
dc.identifier.epage2203en_HK
dc.publisher.placeGermanyen_HK
dc.identifier.scopusauthoridHui, KN=12139840100en_HK
dc.identifier.scopusauthoridNg, WN=23486567300en_HK
dc.identifier.scopusauthoridLeung, CH=7402612415en_HK
dc.identifier.scopusauthoridLai, PT=7202946460en_HK
dc.identifier.scopusauthoridChoi, HW=7404334877en_HK
dc.customcontrol.immutablesml 151028 - merged-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats