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Luminous properties of color tunable strontium thio-selenide phosphors for LEDs application

Authors
Yu, Hong JeongChung, WonkeunJung, HyunchulPark, Sun HeeKim, Sung Hyun
Issue Date
9월-2011
Publisher
ELSEVIER SCIENCE BV
Keywords
Light emitting diodes; Phosphors; Thio-selenide; Europium; Luminescence
Citation
MATERIALS LETTERS, v.65, no.17-18, pp.2690 - 2692
Indexed
SCIE
SCOPUS
Journal Title
MATERIALS LETTERS
Volume
65
Number
17-18
Start Page
2690
End Page
2692
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/111621
DOI
10.1016/j.matlet.2011.05.101
ISSN
0167-577X
Abstract
In this study, alkali earth thio-selenide phosphor, SrSxSe1-x:Eu2+. was prepared using the conventional solid state reaction method. The synthesized phosphor displayed a broad excitation band that was suitable for blue or near UV LED applications and emitted light at various wavelengths (563-605 nm) with different chemical compositions. Like the case of other alkali phosphors. Zn2+ substitution for Sr2+ greatly enhanced the emission of this thio-selenide phosphor. The LED fabricated with the synthesized phosphor produced white light using a blue LED with a CIE-1931 coordinate, T-c and R-a of (0.3199, 0.3107), 6577 K and 51.6, respectively. (C) 2011 Elsevier B.V. All rights reserved.
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