Elastico-mechanoluminescence in CaZr(PO4)2:Eu2+ with multiple trap levels

被引：56

作者：

Zhang, Jun-Cheng ^{[1
,2
]}

Xu, Chao-Nan ^{[3
,4
]}

Long, Yun-Ze ^{[1
,2
]}

机构：

[1] Qingdao Univ, Coll Phys, Qingdao 266071, Peoples R China

[2] Qingdao Univ, Key Lab Photon Mat & Technol Univ Shandong, Qingdao 266071, Peoples R China

[3] Natl Inst Adv Ind Sci & Technol, Tosu, Saga 8410052, Japan

[4] Kyushu Univ, Int Inst Carbon Neutral Energy Res WPI I2CNER, Nishi Ku, Fukuoka 8190395, Japan

来源：

OPTICS EXPRESS | 2013年 / 21卷 / 11期

关键词：

LONG-LASTING PHOSPHORESCENCE; PERSISTENT LUMINESCENCE; STRESS; THERMOLUMINESCENCE; MECHANISM; EMISSION; DY3+; EU3+;

D O I：

10.1364/OE.21.013699

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on a novel elastico-mechanoluminescence (EML) phosphor of CaZr(PO4)(2):Eu2+ for simultaneous luminescent sensing and imaging to mechanical load by the light-emitting of Eu2+ ions. The EML properties of CaZr(PO4)(2):Eu2+ show an intense luminance (above 15 mcd m(-2)), a low load threshold (below 5 N), a broad measurement range for the dynamic load (up to 2000 N), and an accurate linear relationship of EML intensity against the applied load. The excellent EML characteristics are considered to originate from the piezoelectric crystal structure and the multiple trap levels with appropriate depths. An EML mechanism based on the electrons as the main charge carriers is proposed. (C) 2013 Optical Society of America

引用

页码：13699 / 13709

页数：11

共 41 条

[1] Thermoluminescence study of persistent luminescence materials:: Eu2+- and R3+-doped calcium aluminates, CaAl2O4:Eu2+,R3+ [J].