Organolead trihalide perovskite MAPbI₃ shows a distinctive combination of properties such as being ferroelectric and semiconducting, with ion migration effects under poling by electric fields. The combination of its ferroelectric and semiconducting nature is used to make a light harvesting, self‐powered tactile sensor. This sensor interfaces ZnO nanosheets as a pressure‐sensitive drain on the MAPbI₃ film and once poled is operational for at least 72 h with just light illumination. The sensor is monolithic in structure, has linear response till 76 kPa, and is able to operate continuously as the energy harvesting mechanism is decoupled from its pressure sensing mechanism. It has a sensitivity of 0.57 kPa⁻¹, which can be modulated by the strength of the poling field. The understanding of these effects in perovskite materials and their application in power source free devices are of significance to a wide array of fields where these materials are being researched and applied.

中文翻译：

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基于电场感应的MAPbI3钙钛矿中的光收集，自供电整体式触觉传感器

有机卤化三卤化物钙钛矿MAPbI ₃具有铁电和半导体等特性的独特组合，在电场极化作用下具有离子迁移效应。其铁电和半导体性质的结合被用于制造集光，自供电的触觉传感器。该传感器将ZnO纳米片作为MAPbI ₃膜上的压敏漏极与界面连接，一旦极化，仅在光照下即可运行至少72 h。该传感器为单片结构，线性响应至76 kPa，并且能够在能量收集机构与压力传感机构分离的情况下连续运行。灵敏度为0.57 kPa ^-1，可以通过极化场的强度进行调制。对于钙钛矿材料中的这些效应及其在无电源设备中的应用的理解，对于研究和应用这些材料的广泛领域具有重要意义。