An efficient way of harvesting mechanoluminescent light: Flexible pressure sensor application
An efficient way of harvesting mechanoluminescent light: Flexible pressure sensor application
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DOI：
10.1016/j.jlumin.2023.119895
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发表时间：
2023
影响因子：
3.6
通讯作者：
M. A. Shohag;G. Adams;V. Eze;Lucas Braga Carani;T. Ichite;Okenwa Okoli
中科院分区：
文献类型：
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作者：
M. A. Shohag;G. Adams;V. Eze;Lucas Braga Carani;T. Ichite;Okenwa Okoli
机械发光（ML）材料用于制造传感器和其他设备，如人造皮肤，彩色显示器和能量收集设备。然而，开发基于ML的传感器的一个关键挑战是有效捕获和有效传输来自感测位置的ML光的能力。在这里，我们报告了一种灵活而敏感的薄膜压力传感器，使用ML材料和钙钛矿的新型组合创建。在这项工作中，我们采用了一个简单的横向型设计的薄压力传感器主要由（i）的铜掺杂的硫化锌（ZnS：Cu）/聚二甲基硅氧烷（PDMS）复合材料的传感层和（ii）的钙钛矿的光吸收层。混合卤化物钙钛矿是一种光吸收材料，完全吸收ZnS：Cu发出的绿色光。传感器在机械弯曲测试下表现出一致的信号输出。钙钛矿层上的PMMA薄封装层防止水分夹杂。这种利用集成的薄钙钛矿来有效收集ML光的创新技术有可能为基于ML钙钛矿的传感器系统的先进研究开辟新的途径。
Mechanoluminescent (ML) materials are used for fabricating sensors and other devices such as artificial skin, colorful displays, and energy harvesting devices. However, a key challenge in developing ML-based sensors is the ability to effectively capture and efficiently transmit ML light from the sensing location. Here we report a flexible and sensitive thin film pressure sensor, created using a novel combination of ML material and perovskite. In this work, we adopted a simple lateral type design of a thin pressure sensor primarily consisting of (i) a sensing layer of copper-doped zinc sulfide (ZnS:Cu)/polydimethylsiloxane (PDMS) composite and (ii) a light absorbing layer of perovskite. The mixed halide perovskite, a light absorbing material, fully absorbs the green light emitted from ZnS:Cu. The sensor demonstrated consistent signal output under the mechanical bending test. A thin encapsulation layer of PMMA on the perovskite layer prevents moisture inclusion. This innovative technique of utilizing integrated thin perovskite to efficiently harvest ML light has the potential to open up new avenues for advanced research in ML-perovskite-based sensor systems.