Flexible pressure sensors have numerous future applications in artificial electronic skins, foot ulcer detection, structural health monitoring, soft robotics, and wearable technology. We, herein, report an efficient, low-cost manufacturing technique to construct a compact, sensitive, robust yet flexible pressure sensor by fully integrating the mechanoluminescent device with nanometer thick organometal halide perovskite. The mechanoluminescent-perovskite flexible sensor does not require any power source at the sensing location. The sensor was subjected to repeated pressure and generated a distinct electrical current signal corresponding to each pressure cycle. The current intensity increases linearly with the increase of applied pressure on the sensor, which is desirable. Our sensor can detect pressure as low as 11 kPa with a large sensing range and a sensitivity of 0.095 kPa^–1. The sensor displays consistent signals over 1000 cycles, which demonstrates its potential as a reliable sensor in practical applications such as structural health monitoring. Our approach of efficiently harvesting mechanoluminescent light via integrated light-absorbing nanometer thick perovskite might open a window for advanced research in self-powered mechanoluminescent-perovskite-based devices.

中文翻译：

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完全集成的机械发光器件，具有纳米级钙钛矿膜作为自供电柔性传感器，用于动态压力传感

柔性压力传感器在人造电子皮肤，足部溃疡检测，结构健康监测，软机器人和可穿戴技术方面有许多未来的应用。我们在此报告了一种有效，低成本的制造技术，该技术通过将机械发光器件与纳米级有机金属卤化物钙钛矿完全集成在一起，构造出紧凑，灵敏，坚固而灵活的压力传感器。机械发光-钙钛矿型柔性传感器在感应位置不需要任何电源。传感器承受重复的压力，并产生与每个压力循环相对应的不同电流信号。电流强度随着传感器上施加压力的增加而线性增加，这是理想的。^–1。该传感器在1000个周期内显示一致的信号，这证明了其在实际应用（例如结构健康监测）中作为可靠传感器的潜力。我们通过集成的吸收光的纳米厚钙钛矿有效地收集机械发光的方法，可能会为基于自供电机械发光-钙钛矿的设备的高级研究打开一个窗口。