Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7885963 | Ceramics International | 2018 | 8 Pages |
Abstract
A new vanadate Ca3LiMgV3O12 and its Eu3+-doped counterparts were synthesized. Rietveld confinement result of Ca3LiMgV3O12 host indicates that it belongs to cubic space group Ia-3d with parameters of a =â¯12.4300â¯Ã
, V =â¯1920.49â¯Ã
3, Zâ¯=â¯8. Under UV excitation, pure Ca3LiMgV3O12 exhibits a bluish-green broadband emission at 490â¯nm, while Eu3+ doped Ca3LiMgV3O12 shows one bluish-green broad band with a series of red sharp peaks, which originate from the V5+-O2- charge transfer and the Eu3+ intra-4f transitions, respectively. The occurrence of VO4âEu3+ energy transfer is confirmed by decay lifetime analysis and time-resolved emission spectra. It is found that emitting color varies from bluish-green to orange-red with increasing Eu3+ concentration. VO4 bluish-green and Eu3+ red emission shows different thermal quenching response with increasing temperature, due to their different activation energy.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Xinguo Zhang, Zhenpeng Zhu, Ziying Guo, Zishan Sun, Liya Zhou, Zhan-chao Wu,