Journal
MATERIALS RESEARCH BULLETIN
Volume 145, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2021.111535
Keywords
A; Inorganic compounds; b; Luminescence; d; Phosphors
Categories
Funding
- National Natural Science Foundation of China [12074159, 81970976]
- Natural Science Foundation for Distinguished Young Scholars of Gansu Province [20JR5RA572]
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This work reports an efficient mechanoluminescent material, CaLaAl3O7:Tb3+, with green emitting color, whose intensity is dependent on the doping concentration of Tb3+ whether stimulated by stretching or rubbing. By comparing with the commercial ZnS:Cu, CaLaAl3O7:Tb3+ exhibits a higher intensity under the same conditions.
In this work, an efficient mechanoluminescent material with green emitting color, CaLaAl3O7:Tb3+, is reported. The mechanoluminescent intensity of CaLaAl3O7:Tb3+ is dependent on the content of luminescent centers, and the optimum doping concentration of Tb3+ is determined to be 6.0%, whatever the sample is stimulated by stretching or rubbing. The temperature-dependent properties suggest that the mechanoluminescence of CaLaAl3O7:Tb3+ should come from the released carriers from traps under stress stimuli, and therefore the underlying mechanoluminescent mechanisms of CaLaAl3O7:Tb3+ is revealed. By comparing with the commercial ZnS:Cu, a well-known mechanoluminescent material with high efficiency, the CaLaAl3O7:Tb3+ exhibits an even higher intensity when tested at the same conditions. It suggests that CaLaAl3O7:Tb3+ is a very efficient mechanoluminescent material, showing promising applications in the new generation of lighting, displaying and sensing devices.
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