Multicolor luminescence from CaZnOS: Bi3+, Eu3+for stress sensing and multimode anti-counterfeiting

被引:12
|
作者
Dong, Qizheng [1 ,2 ]
Huang, Cheng [1 ,2 ]
Huang, Xinyi [1 ,2 ]
He, Ling [1 ,2 ]
机构
[1] Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
[2] Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China
关键词
Mechanoluminescence; Energy transfer; Multicolor luminescence; Multimode luminescence; SITE OCCUPATION; ENERGY-TRANSFER; EMISSION; MECHANOLUMINESCENCE; PHOSPHORS;
D O I
10.1016/j.jallcom.2023.171687
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
The unique luminescent properties of mechanoluminescence (ML) have demonstrated immense potential for applications in fields such as mechanical sensing, anti-counterfeiting, and display imaging. In this work, a series of multicolor luminescent Ca0.95-xZnOS: 0.05Bi3+, xEu3+ (x = 0-0.04) were synthesized through the hightemperature solid-state reaction method. An energy transfer (ET) process from Bi3+ to Eu3+ was observed when Eu3+ was introduced. The introduction of Eu3+ led to an observed energy transfer process from Bi3+ to Eu3+. The photoluminescence (PL) color shifted from blue-green to red, and the afterglow (AG) shifted from blue to red as the concentration of Eu3+ increased. Furthermore, CaZnOS: Bi3+, Eu3+ exhibits red ML with the highest intensity of 3% Eu3+ concentration, which is 14% higher than CaZnOS: 0.05Bi3+. The ML intensity exhibits a linear correlation with the stress level and can be applied to stress sensing. Therefore, a light-emitting device composed of CaZnOS: Bi3+, Eu3+ and PDMS possesses three light-emitting modes: PL, AG, and ML, which is suitable for optical anti-counterfeiting.
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页数:11
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