Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 임원빈 | - |
dc.date.accessioned | 2019-11-25T07:34:47Z | - |
dc.date.available | 2019-11-25T07:34:47Z | - |
dc.date.issued | 2017-05 | - |
dc.identifier.citation | NATURE MATERIALS, v. 16, no. 5, page. 543-+ | en_US |
dc.identifier.issn | 1476-1122 | - |
dc.identifier.issn | 1476-4660 | - |
dc.identifier.uri | https://www.nature.com/articles/nmat4843 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/114216 | - |
dc.description.abstract | Phosphor-converted white light-emitting diodes (pc-WLEDs) are efficient light sources used in lighting, high-tech displays, and electronic devices. One of the most significant challenges of pc-WLEDs is the thermal quenching, in which the phosphor suffers from emission loss with increasing temperature during high-power LED operation. Here, we report a blue-emitting Na3-2xSc2(PO4)(3):xEu(2+) phosphor (lambda(em) = 453 nm) that does not exhibit thermal quenching even up to 200 degrees C. This phenomenon of zero thermal quenching originates from the ability of the phosphor to compensate the emission losses and therefore sustain the luminescence with increasing temperature. The findings are explained by polymorphic modification and possible energy transfer from electron-hole pairs at the thermally activated defect levels to the Eu2+ 5d-band with increasing temperature. Our results could initiate the exploration of phosphors with zero thermal quenching for high-power LED applications. | en_US |
dc.description.sponsorship | This research is supported by the Strategic Key-Material Development and the Materials and Components Research and Development bodies, funded by the Ministry of Knowledge Economy (Project No. 10044203, MKE, Korea). This work was also financially supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science, ICT & Future Planning (NRF-2014R1A1A1002909 and 2016R1E1A2020571). This research was supported by a Global PhD Fellowship Program through the NRF funded by the Ministry of Education (NRF-2015H1A2A1033990). | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | NATURE PUBLISHING GROUP | en_US |
dc.subject | IONIC-CONDUCTIVITY | en_US |
dc.subject | EMITTING PHOSPHOR | en_US |
dc.subject | WHITE | en_US |
dc.subject | LUMINESCENCE | en_US |
dc.subject | EFFICIENT | en_US |
dc.subject | NA3SC2(PO4)3 | en_US |
dc.title | A zero-thermal-quenching phosphor | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1038/NMAT4843 | - |
dc.relation.journal | NATURE MATERIALS | - |
dc.contributor.googleauthor | Kim, Yoon Hwa | - |
dc.contributor.googleauthor | Arunkumar, Paulraj | - |
dc.contributor.googleauthor | Kim, Bo Young | - |
dc.contributor.googleauthor | Unithrattil, Sanjith | - |
dc.contributor.googleauthor | Kim, Eden | - |
dc.contributor.googleauthor | Moon, Su-Hyun | - |
dc.contributor.googleauthor | Hyun, Jae Young | - |
dc.contributor.googleauthor | Kim, Ki Hyun | - |
dc.contributor.googleauthor | Lee, Donghwa | - |
dc.contributor.googleauthor | Im, Won Bin | - |
dc.relation.code | 2017003341 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DIVISION OF MATERIALS SCIENCE AND ENGINEERING | - |
dc.identifier.pid | imwonbin | - |
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