Tian Wei, Wang Yidan, Chen Liang, Li Liang
College of Physics, Optoelectronics and Energy Collaborative Innovation Center of Suzhou Nano Science and Technology Jiangsu Key Laboratory of Thin Films, Soochow University, Suzhou, 215006, P. R. China.
Small. 2017 Dec;13(45). doi: 10.1002/smll.201701848. Epub 2017 Oct 9.
Novel self-powered nanoscale photodetectors that can work without an external power source, which have great application potential in next-generation nanodevices that operate wirelessly and independently, are being widely studied. This review aims to give a comprehensive summary of the state-of-the-art research results on self-powered nanoscale photodetectors. An introduction of recent progress on Schottky junction photodetectors is provided. Two types of Schottky junctions are discussed in detail: metal-semiconductor and semiconductor-graphene junctions. Next, recent developments of p-n junction photodetectors are highlighted, including homojunction and heterojunction photodetectors. Then, piezo-phototronic effect enhanced photodetection performances of Schottky junctions and p-n junctions are discussed. Then, significant results on the photoelectrochemical-cell-based photodetector and integrated self-powered nanosystem are presented, followed by a systematic comparison of different types of photodetectors. Finally, a summary of the previous results is given, and the major challenges that need to be addressed in the future are outlined. The hope is that this review can provide valuable insights into the current status of self-powered photodetectors and spur new structure and device designs to further enhance photodetection performance.
新型自供电纳米级光电探测器无需外部电源即可工作，在下一代无线独立运行的纳米器件中具有巨大的应用潜力，目前正受到广泛研究。本综述旨在全面总结自供电纳米级光电探测器的最新研究成果。介绍了肖特基结光电探测器的近期进展。详细讨论了两种类型的肖特基结：金属-半导体结和半导体-石墨烯结。接下来，重点介绍了p-n结光电探测器的最新进展，包括同质结和异质结光电探测器。然后，讨论了压光电子效应增强的肖特基结和p-n结的光电探测性能。接着，介绍了基于光电化学电池的光电探测器和集成自供电纳米系统的重要成果，随后对不同类型的光电探测器进行了系统比较。最后，总结了先前的研究结果，并概述了未来需要解决的主要挑战。希望本综述能够为自供电光电探测器的现状提供有价值的见解，并激发新的结构和器件设计，以进一步提高光电探测性能。
