Sun Yanxiao, Niu Gang, Ren Wei, Meng Xiangjian, Zhao Jinyan, Luo Wenbo, Ye Zuo-Guang, Xie Ya-Hong
Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic Science and Engineering, Xi'an Jiaotong University, No. 28, Xianning West Road, Xi'an 710049, Shaanxi, P. R. China.
National Laboratory for Infrared Physics Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, P. R. China.
ACS Nano. 2021 Jul 27;15(7):10982-11013. doi: 10.1021/acsnano.1c01735. Epub 2021 Jun 29.
Photodetectors are one of the most important components for a future "Internet-of-Things" information society. Compared to the mainstream semiconductor-based photodetectors, emerging devices based on two-dimensional (2D) materials and ferroelectrics as well as their hybrid systems have been extensively studied in recent decades due to their outstanding performances and related interesting physical, electrical, and optoelectronic phenomena. In this paper, we review the photodetection based on 2D materials and ferroelectric hybrid systems. The fundamentals of 2D and ferroelectric materials as well as the interaction in the hybrid system will be introduced. Ferroelectricity modulated optoelectronic properties in the hybrid system will be discussed in detail. After the basics and figures of merit of photodetectors are summarized, the 2D-ferroelectrics devices with different structures including diodes, Schottky diodes, and field-effect transistors will be reviewed and compared. The polarization of ferroelectrics offers the possibility of the modulation and enhancement of the photodetection in the hybrid detectors, which will be discussed in depth. Finally, the challenges and perspectives of the photodetectors based on 2D ferroelectrics will be proposed. This Review outlines the important aspects of the recent development of the hybrid system of 2D and ferroelectric materials, which could interact with each other and thus lead to photodetectors with higher performances. Such a Review will be helpful for the research of emerging physical phenomena and for the design of multifunctional nanoscale electronic and optoelectronic devices.
光电探测器是未来“物联网”信息社会最重要的组件之一。与主流的基于半导体的光电探测器相比，基于二维（2D）材料和铁电体及其混合系统的新兴器件，由于其出色的性能以及相关有趣的物理、电学和光电现象，在最近几十年中得到了广泛研究。在本文中，我们综述了基于二维材料和铁电混合系统的光电探测。将介绍二维和铁电材料的基本原理以及混合系统中的相互作用。将详细讨论铁电调制混合系统中的光电特性。在总结了光电探测器的基本原理和品质因数之后，将对具有不同结构的二维铁电体器件，包括二极管、肖特基二极管和场效应晶体管进行综述和比较。铁电体的极化提供了在混合探测器中调制和增强光电探测的可能性，这将进行深入讨论。最后，将提出基于二维铁电体的光电探测器面临的挑战和前景。本综述概述了二维和铁电材料混合系统近期发展的重要方面，它们可以相互作用，从而产生具有更高性能的光电探测器。这样的综述将有助于新兴物理现象的研究以及多功能纳米级电子和光电器件的设计。
