Organic-inorganic hybrid perovskite (OIHP) photodetectors that simultaneously achieve an ultrafast response and high sensitivity in the near-infrared (NIR) region are prerequisites for expanding current monitoring, imaging, and optical communication capbilities. Herein, we demonstrate photodetectors constructed by OIHP and an organic bulk heterojunction (BHJ) consisting of a low-bandgap nonfullerene and polymer, which achieve broadband response spectra up to 1 μm with a highest external quantum efficiency of approximately 54% at 850 nm, an ultrafast response speed of 5.6 ns and a linear dynamic range (LDR) of 191 dB. High sensitivity, ultrafast speed and a large LDR are preeminent prerequisites for the practical application of photodetectors. Encouragingly, due to the high-dynamic-range imaging capacity, high-quality visible-NIR actual imaging is achieved by employing the OIHP photodetectors. We believe that state-of-the-art OIHP photodetectors can accelerate the translation of solution-processed photodetector applications from the laboratory to the imaging market.

同时实现近红外（NIR）区域超快响应和高灵敏度的有机-无机混合钙钛矿（OIHP）光电探测器是扩大电流监控，成像和光通信能力的先决条件。本文中，我们演示了由OIHP和由低带隙非富勒烯和聚合物组成的有机本体异质结（BHJ）构成的光电探测器，该探测器可实现高达1μm的宽带响应光谱，并在850 nm处具有约54％的最高外部量子效率。 5.6 ns的超快响应速度和191 dB的线性动态范围（LDR）。高灵敏度，超快速度和大LDR是光电探测器实际应用的首要前提。令人鼓舞的是，由于具有高动态范围成像能力，通过使用OIHP光电探测器可以实现高质量的近红外NIR实际成像。我们相信，最先进的OIHP光电探测器可以加速从实验室到成像市场的溶液处理光电探测器应用的转换。