Mechanoluminescence in (Sr,Ca,Ba)2SnO4:Sm3+,La3+ ceramics

被引：17
作者：
Zhao, Haifeng [1 ]
Chai, Xiaona [1 ]
Wang, Xusheng [1 ]
Li, Yanxia [1 ]
Yao, Xi [1 ]
机构：
[1] Tongji Univ, Funct Mat Res Lab, Minist Educ, Key Lab Adv Civil Engn Mat, Shanghai 201804, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 656卷
关键词：
(Sr; Ca; Ba)(2)SnO4:La; Sm; Mechanoluminescence; Thermoluminescence; ENHANCEMENT;
D O I：
10.1016/j.jallcom.2015.09.218
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：
(Sr,Ca,Ba)(2)SnO4:Sm3+,La3+ phosphors were prepared by traditional solid-state reactions. Based on previous Sr2SnO4:Sm3+ phosphor, mechanoluminescence (ML) property was greatly enhanced by substitution of Ca2+, Ba2+ and codoped of La3+. Among the samples, (Sr0.7Ca0.27Ba0.03)(1.92)La0.06Sm0.02SnO4 showed excellent properties with intense ML and good linearity between the intensity and the load. ML spectrum of (Sr0.7Ca0.27Ba0.03)(1.92)La0.06Sm0.02SnO4 is consistent with the PL spectrum, ascribed to the (4)G(5/2) to H-6(J) (J = 5/2, 7/2, 9/2, and 11/2) transitions of Sm3+ ions. Introducing Ca2+, Ba2+ and La3+ causes more lattice distortion or defects in the crystal grains, indicating traps can be controlled in both trap depth and quantity. Due to the improvement of traps in the system, ML performance is enhanced. (C) 2015 Elsevier B.V. All rights reserved.
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收藏
页码：94 / 97
页数：4
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