Owing to the need for dynamic, real‐time, and on‐site data collection in internet of things applications, the realization of ultra‐sensitive sensing networks with self‐powered, flexible, and lightweight devices has become an important issue for the development of sensor systems. In this work, a novel, high‐performance, self‐powered photodetector is achieved through the combination of photogating, piezo‐phototronic, and ferroelectric effect by incorporating a ferroelectric thin film of poly(vinylidene fluoride‐co‐trifluoroethylene) in a rationally designed device structure with suitable band alignment, which can modulate carrier transport behavior at the interface due to the internal electric field produced by light illumination, external strain, or voltage‐poled dipole. This enables photocurrent and overall device performance to improve significantly. The unprecedented photodetector presented in this study has several merits, including mechanical flexibility and light weight that allow it to adapt to arbitrary surface topology; additionally, its self‐powering capability and high reliability are urgently needed for the demanding functionality of devices for the development of next‐generation optoelectronic devices, spanning from wearable communication to unattended harsh environments with a human‐friendly interface.

中文翻译：

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由光闸，压电光电子和铁电效应驱动的超高性能自供电柔性光电探测器

由于需要在物联网应用中进行动态，实时和现场数据收集，因此采用自供电，灵活且轻巧的设备来实现超灵敏的传感网络已成为发展物联网的重要问题。传感器系统。在这项工作中，一种新颖的，高性能的，自供电的光检测器是通过photogating，压电phototronic，和铁电效应的组合通过将聚的强电介质薄膜（实现偏二氟共-三氟乙烯）在合理设计的设备结构中，具有合适的能带对准，由于光照，外部应变或电压极化偶极子产生的内部电场，可以调节界面处的载流子传输行为。这使光电流和整个设备的性能得以显着提高。这项研究中提出的前所未有的光电探测器具有许多优点，包括机械柔韧性和轻巧性使其可以适应任意表面拓扑；此外，迫切需要其自供电能力和高可靠性来满足设备的苛刻功能，以开发下一代光电设备，从可穿戴式通信到具有人性化界面的无人值守的恶劣环境。