DC Field | Value | Language |
---|---|---|
dc.contributor.author | Sim, Young Chul | ko |
dc.contributor.author | Lim, Seung-Hyuk | ko |
dc.contributor.author | Yoo, Yang-Seok | ko |
dc.contributor.author | Jang, Minho | ko |
dc.contributor.author | Choi, Sunghan | ko |
dc.contributor.author | Yeo, Hwan-Seop | ko |
dc.contributor.author | Woo, Kie Young | ko |
dc.contributor.author | Lee, Sangwon | ko |
dc.contributor.author | Song, Hyun Gyu | ko |
dc.contributor.author | Cho, Yong-Hoon | ko |
dc.date.accessioned | 2018-05-23T06:30:39Z | - |
dc.date.available | 2018-05-23T06:30:39Z | - |
dc.date.created | 2018-04-23 | - |
dc.date.created | 2018-04-23 | - |
dc.date.issued | 2018-03 | - |
dc.identifier.citation | NANOSCALE, v.10, no.10, pp.4686 - 4695 | - |
dc.identifier.issn | 2040-3364 | - |
dc.identifier.uri | http://hdl.handle.net/10203/241531 | - |
dc.description.abstract | Warm and natural white light (i.e., with a correlated colour temperature <5000 K) with good colour rendition (i.e., a colour rendering index >75) is in demand as an indoor lighting source of comfortable interior lighting and mood lighting. However, for warm white light, phosphor-converted white light-emitting diodes (WLEDs) require a red phosphor instead of a commercial yellow phosphor (YAG:Ce3+), and suffer from limitations such as unavoidable energy conversion losses, degraded phosphors and high manufacturing costs. Phosphor-free WLEDs based on three-dimensional (3D) indium gallium nitride (InGaN)/gallium nitride (GaN) structures are promising alternatives. Here, we propose a new concept for highly efficient phosphor-free warm WLEDs using 3D core-shell InGaN/GaN dodecagonal ring structures, fabricated by selective area growth and the KOH wet etching method. Electrically driven, phosphor-free warm WLEDs were successfully demonstrated with a low correlated colour temperature (4500 K) and high colour rendering index (R-a = 81). From our findings, we believe that WLEDs based on dodecagonal ring structures become a platform enabling a high-efficiency warm white light-emitting source without the use of phosphors. | - |
dc.language | English | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | QUANTUM-WELL STRUCTURES | - |
dc.subject | GROWTH | - |
dc.subject | BLUE | - |
dc.subject | NANOSTRUCTURES | - |
dc.subject | SEMICONDUCTORS | - |
dc.subject | EMISSION | - |
dc.subject | EMITTERS | - |
dc.subject | DEVICES | - |
dc.subject | SURFACE | - |
dc.subject | FIELD | - |
dc.title | Three-dimensional GaN dodecagonal ring structures for highly efficient phosphor-free warm white light-emitting diodes | - |
dc.type | Article | - |
dc.identifier.wosid | 000428786800009 | - |
dc.identifier.scopusid | 2-s2.0-85043497410 | - |
dc.type.rims | ART | - |
dc.citation.volume | 10 | - |
dc.citation.issue | 10 | - |
dc.citation.beginningpage | 4686 | - |
dc.citation.endingpage | 4695 | - |
dc.citation.publicationname | NANOSCALE | - |
dc.identifier.doi | 10.1039/c7nr08079d | - |
dc.contributor.localauthor | Cho, Yong-Hoon | - |
dc.contributor.nonIdAuthor | Lee, Sangwon | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | QUANTUM-WELL STRUCTURES | - |
dc.subject.keywordPlus | GROWTH | - |
dc.subject.keywordPlus | BLUE | - |
dc.subject.keywordPlus | NANOSTRUCTURES | - |
dc.subject.keywordPlus | SEMICONDUCTORS | - |
dc.subject.keywordPlus | EMISSION | - |
dc.subject.keywordPlus | EMITTERS | - |
dc.subject.keywordPlus | DEVICES | - |
dc.subject.keywordPlus | SURFACE | - |
dc.subject.keywordPlus | FIELD | - |
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