Effects of heat-treatment on photoluminescence properties of MgAl2O4:Eu3+ red phosphors synthesized by a solution combustion method

被引：18

作者：

Wang, Zisheng ^{[1
]}

Jiao, Shihui ^{[1
]}

Xu, Ye ^{[1
]}

Zhang, Qi ^{[1
]}

Chen, Yan ^{[1
]}

Pang, Guangsheng ^{[1
]}

Feng, Shouhua ^{[1
]}

机构：

[1] Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130000, Jilin, Peoples R China

来源：

JOURNAL OF LUMINESCENCE | 2019年 / 211卷

基金：

中国国家自然科学基金;

关键词：

MgAl2O4; Spinel; Phosphor; Eu3+ doping; Debye temperature; LUMINESCENCE PROPERTIES; TRIVALENT LANTHANIDES; DEBYE TEMPERATURE; ENERGY-TRANSFER; NANOPARTICLES; TRANSITIONS;

D O I：

10.1016/j.jlumin.2019.03.008

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

To investigate the influence of annealing temperature on the structure and photoluminescence property, 5% wt. Eu3+ doped MgAl2O4 ceramics have been synthesized by a solution combustion reaction and thermally treated at 700, 800, 900, 1000, 1100, and 1200 degrees C. Powder XRD indicate that pure spinels were synthesized and the crystallinity increased with the increase of the heat treatment temperature. Low temperature heat capacities of these phosphors were measured and the data were fitted by T-3 Debye model. The obtained Debye temperature of sample show positive relationship with the calcine temperature. Our results suggest that the heat treatment improves the crystallinity and decreases the structure defects of MgAl2O4:Eu3+. The SEM shows spongy structure of the particles is dependent on the calcine temperature. These phosphors exhibit hypersensitive red emission peaking at 613 nm, which corresponds to the electric-dipole D-5(0)-F-7(2) transition of Eu3+ ions. Comparison between the excitation and emission spectra has shown modification of their spectroscopic characteristics. The MgAl2O4:Eu3+ calcined at 900 degrees C shows the best performance based on the dominant red (5D(0)-7F(2)) emission and the effective emission excited by near-UV 394 nm show potential applications in solid state lighting.

引用

页码：108 / 113

页数：6

共 32 条

[1] LUMINESCENCE AND PHOTOCONDUCTIVITY IN MAGNESIUM ALUMINUM SPINEL [J].