Growth and characterization of air annealing Tb-doped YAG:Ce single crystal for white-light-emitting diode

被引：29

作者：

Gong, Maogao ^{[1
]}

Xiang, Weidong ^{[1
]}

Liang, Xiaojuan ^{[1
]}

Zhong, Jiasong ^{[2
]}

Chen, Daqin ^{[2
]}

Huang, Jun ^{[1
]}

Gu, Guorui ^{[1
]}

Yang, Cheng ^{[1
]}

Xiang, Run ^{[1
]}

机构：

[1] Wenzhou Univ, Coll Chem & Mat Engn, Wenzhou 325035, Peoples R China

[2] Hangzhou Dianzi Univ, Coll Mat & Environm Engn, Hangzhou 310018, Zhejiang, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 639卷

基金：

中国国家自然科学基金;

关键词：

White LED; Crystal growth; X-ray powder diffractometer; Optical properties; ENERGY-TRANSFER; PHOSPHOR; LUMINESCENCE; TEMPERATURE; CERAMICS; CEYAG; CR;

D O I：

10.1016/j.jallcom.2015.03.162

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the preparation of transparent Ce and Tb co-doped Y3Al5O12 single crystal by the Czochralski method. The characterization of the resulting single crystal was accomplished by using X-ray powder diffractometer, scanning electron microscopy and energy dispersive X-ray spectroscopy. Absorption peak of the single crystal at about 460 nm has been obtained from ultraviolet-visible absorption spectrometer and their intensity is changed with different annealing condition. Its optical properties also have been investigated using fluorescence spectrometer. What's more, its photoelectric parameters were studied by LED fast spectrometer. The constructed single crystal based white-light-emitting diode exhibits a high luminous efficiency of 140.89 lm/W, and a correlated color temperature of 4176 K as well as a color rendering index of 56.7, which reveal the prominent feasibility of the present single crystal material in white-light-emitting diode application. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：611 / 616

页数：6

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