Sustainable Mechanoluminescence by Designing a Novel Pinning Trap in Crystals
Sustainable Mechanoluminescence by Designing a Novel Pinning Trap in Crystals
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DOI：
10.1021/acs.jpcc.8b06714
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发表时间：
2018-09
期刊：
影响因子：
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通讯作者：
Dong Tu;Ryouta Hamabe;Chao‐Nan Xu
中科院分区：
文献类型：
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作者：
Dong Tu;Ryouta Hamabe;Chao‐Nan Xu
来自纯无机材料的机械发光（ML）基本上由预UV照射过程触发，这在很大程度上限制了其实际应用。在这里，通过设计一个钉扎陷阱结构，一个新的可持续的ML开发从Ruddlesden-Popper钙钛矿Sr 3Sn 2 O 7：Sm 3+（SSOS），即使没有预紫外线照射过程。该浓度的SSOS在50 h的等待时间内仍能保持一定的强度和稳定性。通过热释光方法对陷阱结构的分析，研究了ML机制。在420 K的热释光峰在50 h的等待时间后没有衰减，这可以归因于一个高密度的钉扎陷阱，导致ML强度和ML强度保持率的增加。
Mechanoluminescence (ML) from purely inorganic materials is basically triggered by a pre-UV-irradiation process, which largely limits its practical applications. Here, by designing a pining-trap structure, a novel sustainable ML is developed from Ruddlesden–Popper perovskite Sr3Sn2O7:Sm3+ (SSOS) even without the pre-UV-irradiation process. This ML of SSOS could keep stable and remain a certain intensity even extending the waiting time to 50 h. The ML mechanism is also investigated by the analysis of trap structure through the thermoluminescence method. A thermoluminescence peak at 420 K showed no attenuation after 50 h waiting time, which could be ascribed to a high-density pining trap, resulting in the increment of ML intensity and ML intensity maintenance ratio.