DC Field | Value | Language |
---|---|---|
dc.contributor.author | Seung Jae Oh | - |
dc.contributor.author | Gyeongmin Go | - |
dc.contributor.author | Lee, JL | - |
dc.contributor.author | E. Fred Schubert | - |
dc.contributor.author | Jaehee Cho | - |
dc.contributor.author | Kim, JK | - |
dc.date.accessioned | 2016-03-31T08:04:38Z | - |
dc.date.available | 2016-03-31T08:04:38Z | - |
dc.date.created | 2014-03-17 | - |
dc.date.issued | 2013-07 | - |
dc.identifier.issn | 2050-7526 | - |
dc.identifier.other | 2013-OAK-0000029891 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/14508 | - |
dc.description.abstract | White light-emitting diodes (LEDs) based on the combination of a GaN-based blue LED chip and a yellow phosphor layer suffer from a low phosphor conversion efficiency (PCE) because a significant amount of the yellow fluorescence is emitted towards the blue LED chip where the fluorescence is partially absorbed. In this study, we greatly enhanced the PCE of a white LED by embedding a dichroic-filtering contact (DFC) which multi-functioned as a blue-transmitting but yellow-reflecting optical filter as well as a low-resistance ohmic contact to p-type GaN. Electrically conductive DFCs consisting of alternating layers of dense and nanoporous indium-tin-oxide were designed using a genetic algorithm optimization method, and experimentally realized by the oblique-angle deposition technique, which enables tuning of the refractive index of a single material. GaInN/GaN multiple quantum well LEDs with 3- and 5-layer DFCs show much enhanced PCEs, by 9.8% and 17.7%, respectively, while maintaining favorable electrical properties. In addition, the possibility of eliminating the trade-off between the color temperature and the luminous efficacy of typical warm-white LEDs by using a DFC is discussed. | - |
dc.description.statementofresponsibility | X | - |
dc.language | English | - |
dc.publisher | Royal Society of Chemisty | - |
dc.relation.isPartOf | Journal of Materials Chemistry C | - |
dc.title | Enhanced phosphor conversion efficiency of GaN-based white light-emitting diodes having dichroic-filtering contacts | - |
dc.type | Article | - |
dc.contributor.college | 신소재공학과 | - |
dc.identifier.doi | 10.1039/C3TC30914B | - |
dc.author.google | Oh, SJ | - |
dc.author.google | Go, G | - |
dc.author.google | Lee, JL | - |
dc.author.google | Schubert, EF | - |
dc.author.google | Cho, J | - |
dc.author.google | Kim, JK | - |
dc.relation.volume | 1 | - |
dc.relation.issue | 36 | - |
dc.relation.startpage | 5733 | - |
dc.relation.lastpage | 5740 | - |
dc.contributor.id | 10105416 | - |
dc.relation.journal | JOURNAL OF MATERIAL CHEMISTRY | - |
dc.relation.index | SCI급, SCOPUS 등재논문 | - |
dc.relation.sci | SCI | - |
dc.collections.name | Journal Papers | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | Journal of Materials Chemistry C, v.1, no.36, pp.5733 - 5740 | - |
dc.identifier.wosid | 000323578000018 | - |
dc.date.tcdate | 2019-01-01 | - |
dc.citation.endPage | 5740 | - |
dc.citation.number | 36 | - |
dc.citation.startPage | 5733 | - |
dc.citation.title | Journal of Materials Chemistry C | - |
dc.citation.volume | 1 | - |
dc.contributor.affiliatedAuthor | Lee, JL | - |
dc.contributor.affiliatedAuthor | Kim, JK | - |
dc.identifier.scopusid | 2-s2.0-84896064034 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 6 | - |
dc.description.scptc | 6 | * |
dc.date.scptcdate | 2018-05-121 | * |
dc.type.docType | Article | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
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