Zhou Jiachen, Huang Jia
School of Materials Science and Engineering Tongji University Shanghai 201804 P. R. China.
Adv Sci (Weinh). 2017 Sep 15;5(1):1700256. doi: 10.1002/advs.201700256. eCollection 2018 Jan.
Recent years have witnessed skyrocketing research achievements in organic-inorganic hybrid lead halide perovskites (OIHPs) in the photovoltaic field. In addition to photovoltaics, more and more studies have focused on OIHPs-based photodetectors in the past two years, due to the remarkable optoelectronic properties of OIHPs. This article summarizes the latest progress in this research field. To begin with, the factors influencing the performance of photodetectors are discussed, including both internal and external factors. In particular, the channel width and the incident power intensities should be taken into account to precisely and objectively evaluate and compare the output performance of different photodetectors. Next, photodetectors fabricated on single-component perovskites in terms of different micromorphologies are discussed, namely, 3D thin-film and single crystalline, 2D nanoplates, 1D nanowires, and 0D nanocrystals, respectively. Then, bilayer structured perovskite-based photodetectors incorporating inorganic and organic semiconductors are discussed to improve the optoelectronic performance of their pristine counterparts. Additionally, flexible OIHPs-based photodetectors are highlighted. Finally, a brief conclusion and outlook is given on the progress and challenges in the field of perovskites-based photodetectors.
近年来，有机-无机杂化铅卤化物钙钛矿（OIHPs）在光伏领域取得了飞速的研究成果。除了光伏领域，由于OIHPs具有卓越的光电性能，在过去两年里，越来越多的研究聚焦于基于OIHPs的光电探测器。本文总结了该研究领域的最新进展。首先，讨论了影响光电探测器性能的因素，包括内部因素和外部因素。特别地，在精确、客观地评估和比较不同光电探测器的输出性能时，应考虑沟道宽度和入射光强。接下来，分别讨论了基于不同微观形貌的单组分钙钛矿制备的光电探测器，即三维薄膜和单晶、二维纳米片、一维纳米线和零维纳米晶体。然后，讨论了结合无机和有机半导体的双层结构钙钛矿基光电探测器，以提高其原始对应物的光电性能。此外，还重点介绍了基于柔性OIHPs的光电探测器。最后，对基于钙钛矿的光电探测器领域的进展和挑战给出了简要的结论和展望。
