Nanocrystalline Y3Al5O12:Ce phosphor-based white light-emitting diodes embedded with CdS:Mn/ZnS core/shell quantum dots

被引：55

作者：

Kim, Jong-Uk ^{[1
]}

Kim, Yong-Seog ^{[1
]}

Yang, Heesun ^{[1
]}

机构：

[1] Hongik Univ, Dept Mat Sci & Engn, Seoul 121791, South Korea

来源：

MATERIALS LETTERS | 2009年 / 63卷 / 6-7期

关键词：

Nanocrystalline Y3Al5O12:Ce; CdS:Mn/ZnS quantum dots; Color rendering index; White light emitting diodes;

D O I：

10.1016/j.matlet.2008.12.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

120 nm-sized yellow emitting Y3Al5O12:Ce (YAG:Ce) nanocrystalline phosphors and 4.5 nm-sized orange emitting CdS:Mn/ZnS core/shell structured quantum dots (QDs) were prepared by a modified polyol and a reverse micelle chemistry, respectively. To compensate a poor color rendering index (CRI) of YAG:Ce nanophosphor-based white light-emitting diodes (LEDs) due to the lack of red spectral component, CdS:Mn/ ZnS QDs were blended into YAG:Ce nanophosphors. Blends of nanophosphors and QDs exhibited the prominent spectral evolution with an increasing content of QDs. A hybrid white LED, which combines a blue LED with the blend of nanophosphor and QDs with a weight ratio of 1:1 was demonstrated with an improved CRI value of 85. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：614 / 616

页数：3

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