A novel polymer-derived method to prepare Eu-doped Si3N4 yellow phosphor

被引：14

作者：

Li, Quan ^{[1
]}

Gong, Chaoyang ^{[1
,2
]}

Cheng, Xuan ^{[1
,2
]}

Zhang, Ying ^{[1
,2
]}

机构：

[1] Xiamen Univ, Coll Mat, Dept Mat Sci & Engn, Xiamen 361005, Fujian, Peoples R China

[2] Xiamen Univ, Fujian Key Lab Adv Mat, Xiamen 361005, Fujian, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2015年 / 41卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Precursors: organic; Optical properties; Si3N4; LUMINESCENCE PROPERTIES; RED PHOSPHORS;

D O I：

10.1016/j.ceramint.2014.11.032

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The yellow emission europium-doped silicon nitride (Si3N4:Eu) phosphor was prepared by a new and facile synthesis route via precursor formed by reacting solid polycarbosilane with europium acetylacetonate hydrate followed by nitridation and calcination of the precursor. This novel polymer-derived method utilized both distinctive polymer reaction and organic inorganic transformation; accordingly, the amount of 4 wt % Eu mainly in the form of Eu3+ was uniformly doped into Si3N4 (alpha and beta):Eu nanocrystallites at mild conditions. The double-exponential photoluminescence behavior with the decay time of 1.18 ns and 25.28 ns corresponding to the 4f(6)5d(1)-4f(7) transition of Eu2+ and 4f-4f transition of Eu3+, respectively, was observed with Si3N4 (alpha and beta):Eu when excited at 375 nm and emitted at 550 nm. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：4227 / 4230

页数：4

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