Fabrication of warm, high CRI white LED using non-cadmium quantum dots
- Authors
- Song, Woo-Seuk; Lee, Sun-Hyoung; Yang, Heesun
- Issue Date
- 1-Sep-2013
- Publisher
- OPTICAL SOC AMER
- Citation
- OPTICAL MATERIALS EXPRESS, v.3, no.9, pp.1468 - 1473
- Journal Title
- OPTICAL MATERIALS EXPRESS
- Volume
- 3
- Number
- 9
- Start Page
- 1468
- End Page
- 1473
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/17046
- DOI
- 10.1364/OME.3.001468
- ISSN
- 2159-3930
- Abstract
- We reported on the synthesis of two bright non-cadmium quantum dots (QDs) of green (512 nm)-emitting InP/ZnS and orange (583 nm)-emitting CuInS2 (CIS)/ZnS core/shell and their application for the fabrication of solid-state lighting device. The spectral overlap between absorptions from both QDs and emission from InGaN-based blue light-emitting diode (LED) chip was excellent. Thus, the efficient down-conversion of blue-to-QD emission for the generation of white light was accomplished by sequentially dispensing InP/ZnS QDs on top of CIS/ZnS ones within epoxy resin. The white QD-LED generated a high-quality white light with a high color rendering index of 90 and a warm color temperature of 3803K under a drive current of 20 mA. Drive current-dependent variations of its primary electroluminescent properties were investigated in details. (c) 2013 Optical Society of America
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Collections - Graduate School > Materials Science and Engineering > 1. Journal Articles
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