Utilization of LiSrPO4:Eu phosphor and Cu-In-S quantum dot for fabrication of high color rendering white light-emitting diode
- Authors
- Song, Woo-Seuk; Kim, Jong-Hoon; Lee, Jeong-Hoon; Lee, Hye-Seung; Jang, Ho Seong; Yang, Heesun
- Issue Date
- 1-Feb-2013
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- LiSrPO4:Eu phosphor; Cu-In-S/ZnS quantum dot; White LED; Color rendering
- Citation
- MATERIALS LETTERS, v.92, pp.325 - 329
- Journal Title
- MATERIALS LETTERS
- Volume
- 92
- Start Page
- 325
- End Page
- 329
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/17182
- DOI
- 10.1016/j.matlet.2012.10.110
- ISSN
- 0167-577X
- Abstract
- We report on the utilization of a novel combination of LiSrPO4:Eu phosphor plus Cu-In-S (CIS)/ZnS core/shell quantum dot (QD) as down-converter for the fabrication of a high color rendering white light-emittng diode (LED). Blue-emitting (452 nm) LiSrPO4:Eu phosphor and yellow-emitting (557 nm) CIS/ZnS QD are synthesized by conventional solid-state reaction and hot colloidal methods, respectively, and thier luminescent properties are characterizied. Taking advantage of the excellent excitation efficiencies of both phosphor and QD at near-UV region, they are incorporated into a near-UV-emitting LED chip with a scheme of QD-on-phosphor. Elelctroluminescent properties of the resulting white LED are described, and also compared to those of a blue LED-pumped, CIS/ZnS QD-based white LED with a limited color rendering property. (C) 2012 Elsevier B.V. All rights reserved.
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Collections - Graduate School > Materials Science and Engineering > 1. Journal Articles
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