Enhanced luminous efficiency of deep red emitting K2SiF6:Mn4+ phosphor dependent on KF ratio for warm-white LED

被引：47

作者：

Lee, M. J. ^{[1
]}

Song, Y. H. ^{[1
]}

Song, Y. L. ^{[1
]}

Han, G. S. ^{[1
]}

Jung, H. S. ^{[1
]}

Yoon, D. H. ^{[1
]}

机构：

[1] Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 440746, South Korea

来源：

MATERIALS LETTERS | 2015年 / 141卷

基金：

新加坡国家研究基金会;

关键词：

K2SiF6:Mn4+; Warm-white LED; Deep-red phosphor; LIGHT; PHOTOLUMINESCENCE; OXYFLUORIDE; CONVERSION; EMISSION; CHIP;

D O I：

10.1016/j.matlet.2014.11.025

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We demonstrate a simple method of K2SiF6:Mn4+ red phosphor and discuss its promising application in warm-white lighting emitting diodes. The K2SiF6:Mn4+ was synthesized from SiO2 powders through redox reaction in HF/KMnO4 solution. To further increase emission efficiency, KF was introduced in the solution. An intense absorption band in blue and a bright emission in red indicated the phosphor K2SiF6:Mn4+. This phosphor and the synthesis method are expected to be promising candidates for application in white LEDs. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：27 / 30

页数：4

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