Intense and efficient green mechanoluminescence in CaLaAl3O7 through Tb3+ doping. (January 2022)

• Record Type: Journal Article
• Authors: Qin, Shiye; Bian, Jiali; Han, Yue; Ma, Zhidong; Liu, Bin; Zhang, Jiachi; Xu, Xuhui; Wang, Zhaofeng
• Is Part Of: Materials research bulletin. Volume 145(2022)
• Publication Date: 2022-01
• Subjects: A. Inorganic compounds -- b. Luminescence -- d. Phosphors; Materials -- Periodicals; Crystal growth -- Periodicals; Matériaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Crystal growth; Materials; Periodicals; 620.11
• DOI: 10.1016/j.materresbull.2021.111535
• Languages: English
• ISSNs: 0025-5408

Abstract

Highlights: Efficient and green mechanoluminescence is achieved in Tb 3+ doped CaLaAl3 O7 . The temperature-dependent thermoluminescent and mechanoluminescent properties are investigated. The underlying mechanoluminescent mechanisms of CaLaAl3 O7 :Tb 3+ are proposed. Abstract: In this work, an efficient mechanoluminescent material with green emitting color, CaLaAl3 O7 :Tb 3+, is reported. The mechanoluminescent intensity of CaLaAl3 O7 :Tb 3+ is dependent on the content of luminescent centers, and the optimum doping concentration of Tb 3+ is determined to be 6.0%, whatever the sample is stimulated by stretching or rubbing. The temperature-dependent properties suggest that the mechanoluminescence of CaLaAl3 O7 :Tb 3+ should come from the released carriers from traps under stress stimuli, and therefore the underlying mechanoluminescent mechanisms of CaLaAl3 O7 :Tb 3+ is revealed. By comparing with the commercial ZnS:Cu, a well-known mechanoluminescent material with high efficiency, the CaLaAl3 O7 :Tb 3+ exhibits an even higher intensity when tested at the same conditions. It suggests that CaLaAl3 O7 :Tb 3+ is a very efficient mechanoluminescent material, showing promising applications in the new generation of lighting, displaying and sensing devices. Graphical abstract: Image, graphical abstract