Novel elastico-mechanoluminescence materials CaZnOS:Mn2+ and CaZr(PO4)2:Eu2+

Journal of Advanced Dielectrics

Yun-Ze Long¹  Jun-Cheng Zhang¹  Xusheng Wang²  Chao-Nan Xu³ 

[1] College of Physics, Qingdao University, Qingdao 266071, P. R. China;Functional Materials Research Laboratory, Tongji University, Shanghai 200092, P. R. China;National Institute of Advanced Industrial Science and Technology (AIST), Saga 841-0052, Japan;

关键词: Mechanoluminescence;    stress;    phosphor;    piezoelectricity;    trap;   

DOI  :  10.1142/S2010135X14300035

来源: DOAJ

【 摘 要 】

This paper highlights our work on the recent progress in novel elastico-mechanoluminescence (EML) materials CaZnOS:Mn2+ and CaZr(PO4)2:Eu2+, which can simultaneously "feel" (sense) and "see" (image) the applied mechanical stress as an intense and proportional luminescence. CaZnOS:Mn2+ can sense various types of mechanical stress, including ultrasonic vibration, impact, friction and compression because of the large piezoelectric coefficient. CaZr(PO4)2:Eu2+ with multiple trap levels shows a broad measurement range for dynamic load. Both of CaZnOS:Mn2+ and CaZr(PO4)2:Eu2+ belong to the defect-controlled type piezoelectric phosphors, and their EML mechanisms could be explained using the piezoelectrically induced carrier de-trapping model.

【 授权许可】

Unknown