Full down-conversion of amber-emitting phosphor-converted light-emitting diodes with powder phosphors and a long-wave pass filter

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dc.contributor.authorOh, Jeong Rokko
dc.contributor.authorCho, Sang-Hwanko
dc.contributor.authorPark, Hoo Keunko
dc.contributor.authorOh, Ji Hyeko
dc.contributor.authorLee, Yong-Heeko
dc.contributor.authorDo, Young Ragko
dc.date.accessioned2010-11-18T02:04:49Z-
dc.date.available2010-11-18T02:04:49Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2010-05-
dc.identifier.citationOPTICS EXPRESS, v.18, no.11, pp.11063 - 11072-
dc.identifier.issn1094-4087-
dc.identifier.urihttp://hdl.handle.net/10203/20119-
dc.description.abstractThis paper reports the possibility of a facile optical structure to realize a highly efficient monochromatic amber-emitting light-emitting diode (LED) using a powder-based phosphor-converted LED combined with a long-wave pass filter (LWPF). The capping of a blue-reflecting and amber-passing LWPF enhances both the amber emission from the silicate amber phosphor layer and the color purity due to the blocking and recycling of the pumping blue light from the InGaN LED. The enhancement of the luminous efficacy of the amber pc-LED with a LWPF (phosphor concentration 20 wt%, 39.4 lm/W) is 34% over that of an amber pc-LED without a LWPF (phosphor concentration 55 wt%, 29.4 lm/W) at 100 mA and a high color purity (> 96%) with Commission International d'Eclairage (CIE) color coordinates of x = 0.57 and y = 0.42. (C) 2010 Optical Society of America-
dc.description.sponsorshipThis study was supported by the Korea Science and Engineering Foundation (Nano R&D program grant # 2008-03573 and ERC program grant # R11-2005-048-00000-0) and a grant (code# F0004100-2008-31) from the Information Display R&D Center, one of the 21st Century Frontier R&D Programs funded by the Ministry of Knowledge Economy of Korea. This work was partially supported by the National Research Foundation through a Korea Grant funded by the Korean Government (MEST) (NRF-C1AAA001-2009-0092938).en
dc.languageEnglish-
dc.language.isoen_USen
dc.publisherOPTICAL SOC AMER-
dc.subjectRED PHOSPHOR-
dc.subjectNITRIDES-
dc.subjectLEDS-
dc.titleFull down-conversion of amber-emitting phosphor-converted light-emitting diodes with powder phosphors and a long-wave pass filter-
dc.typeArticle-
dc.identifier.wosid000278512300017-
dc.identifier.scopusid2-s2.0-77952850164-
dc.type.rimsART-
dc.citation.volume18-
dc.citation.issue11-
dc.citation.beginningpage11063-
dc.citation.endingpage11072-
dc.citation.publicationnameOPTICS EXPRESS-
dc.identifier.doi10.1364/OE.18.011063-
dc.contributor.localauthorLee, Yong-Hee-
dc.contributor.nonIdAuthorOh, Jeong Rok-
dc.contributor.nonIdAuthorPark, Hoo Keun-
dc.contributor.nonIdAuthorOh, Ji Hye-
dc.contributor.nonIdAuthorDo, Young Rag-
dc.description.isOpenAccessY-
dc.type.journalArticleArticle-
dc.subject.keywordPlusRED PHOSPHOR-
dc.subject.keywordPlusNITRIDES-
dc.subject.keywordPlusLEDS-
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