Effect of codoping Ce3+ on the luminescence properties of Sr9Mg1.5(PO4)7:Eu2+ orange-yellow phosphor

被引：18

作者：

Tang Wanjun ^{[1
]}

Zhang Fen ^{[2
]}

机构：

[1] South Cent Univ Nationalities, Hubei Key Lab Catalysis & Mat Sci, Coll Chem & Mat Sci, Wuhan, Hubei, Peoples R China

[2] Southeast Univ, Key Lab Environm Med Engn, Minist Educ, Jiangsu Engn Lab Smart Carbon Rich Mat & Device,S, Nanjing, Jiangsu, Peoples R China

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2019年 / 102卷 / 08期

关键词：

defects; doping; europium; LED; optical materials; EMITTING PHOSPHOR; ENERGY-TRANSFER; EMISSION ENHANCEMENT; WHITE LEDS; COLOR; EU2+;

D O I：

10.1111/jace.16311

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：

Sr9Mg1.5(PO4)(7):Eu2+ has recently been reported as a promising blue light-excited orange-yellow phosphor that can be used in white LED device. Here, Ce3+-codoping is found to be an effective strategy to improve the luminescence performance of Sr9Mg1.5(PO4)(7):Eu2+ phosphor. The coexistence of Eu2+ and Eu3+ ions has been verified via photoluminescence spectral analysis. The reduction of Eu3+ to Eu2+ in Sr9Mg1.5(PO4)(7) lattice cannot be completed in a reducing atmosphere, but can be promoted through codoping with Ce3+ ions to a great extent, which finally increase the effective concentration of Eu2+ in the crystal lattice. The Eu3+-Eu2+ reduction mechanism is analyzed using a charge compensation model. This work not only achieves enhanced luminescence of the Sr9Mg1.5(PO4)(7):Eu2+ phosphor by codoping with Ce3+ ions, but also provides new insights into the design of Ce3+/Eu2+ codoped luminescent materials.

引用

页码：4632 / 4639

页数：8

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