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首页> 外文期刊>RSC Advances >Controlling elastico-mechanoluminescence in diphase (Ba,Ca)TiO3:Pr3+ by co-doping different rare earth ions
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Controlling elastico-mechanoluminescence in diphase (Ba,Ca)TiO3:Pr3+ by co-doping different rare earth ions

机译：通过共掺杂不同的稀土离子来控制双相（Ba，Ca）TiO3：Pr3 +中的弹性机械发光

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摘要

Elastico-mechanoluminescence (EML) of diphase (Ba,Ca)TiO3:Pr3+,RE (RE includes all rare-earth-ions except Sc and Pm) is systematically investigated. The EML intensity is obviously controlled by the co-doped RE ions. Y, La, Nd, Gd, Yb, and Lu have the positive effect of improving EML, among which Gd enhances the EML intensity 61% at least. The depth and concentration of traps in (Ba,Ca)TiO3:Pr3+,RE are estimated according to the thermoluminescence curves. The consistent correlation between the dependence of EML intensity and trap concentration on the RE ions shows that the change of trap concentration induced by co-doping regulates the EML performance. Furthermore, the similar variations between the EML and afterglow (AG) intensities with the RE ions suggest the possibility that the same types of traps participate in the EML and AG processes. An EML mechanism is proposed on the basis of electrons as the main charge carriers.
机译：系统地研究了双相（Ba，Ca）TiO3：Pr3 +，RE（RE包括除Sc和Pm以外的所有稀土离子）的弹性力学发光（EML）。 EML强度显然受共掺杂RE离子控制。 Y，La，Nd，Gd，Yb和Lu具有改善EML的积极作用，其中Gd至少使EML强度提高61％。根据热致发光曲线估算（Ba，Ca）TiO3：Pr3 +，RE中陷阱的深度和浓度。 EML强度和阱浓度对RE离子的依赖性之间的一致关系表明，共掺杂引起的阱浓度变化会调节EML性能。此外，EML和余辉（AG）强度与RE离子之间的相似变化表明，相同类型的陷阱可能参与EML和AG过程。基于电子作为主要的载流子，提出了一种EML机理。

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