机械容积
材料科学
异质结
兴奋剂
发光
自然键轨道
离子
辐照
光电子学
物理化学
分析化学(期刊)
密度泛函理论
化学
物理
计算化学
色谱法
有机化学
核物理学
作者
Xiuxia Yang,Rong Liu,Xuhui Xu,Zhichao Liu,Mingzi Sun,Wei Yan,Dengfeng Peng,Chao‐Nan Xu,Bolong Huang,Dong Tu
出处
期刊:Small
[Wiley]
日期:2021-10-12
卷期号:17 (46)
被引量:37
标识
DOI:10.1002/smll.202103441
摘要
Abstract Mechanoluminescence (ML) is a striking optical phenomenon that is achieved through mechanical to optical energy conversion. Here, a series of Li 1 −x Na x NbO 3 : Pr 3+ ( x = 0, 0.2, 0.5, 0.8, 1.0) ML materials have been developed. In particular, due to the formation of heterostructure, the synthesized Li 0.5 Na 0.5 NbO 3 : Pr 3+ effectively couples the trap structures and piezoelectric property to realize the highly repeatable ML performance without traditional preirradiation process. Furthermore, the ML performances measured under sunlight irradiation and preheating confirm that the ML properties of Li 0.5 Na 0.5 NbO 3 : Pr 3+ can be ascribed to the dual modes of luminescence mechanism, including both trap‐controllable and self‐recoverable modes. In addition, DFT calculations further confirm that the doping of Na + ions in LiNbO 3 leads to electronic modulations by the formation of the heterostructures, which optimizes the trap distributions and concentrations. These modulations improve the electron transfer efficiency to promote ML performances. This work has supplied significant references for future design and synthesis of efficient ML materials for broad applications.
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