Two-dimensional (2D) materials such as graphene and transition-metal chalcogenides have been extensively studied because of their superior electronic and optical properties. Recently, 2D materials have shown great practical application in position-sensitive detectors (PSDs), originating from the lateral photoelectrical effect of the materials or junctions. The high position sensitivity and ultrafast photoresponse of PSDs based on 2D materials, especially compatibility with Si technology, may enable diverse optoelectronic applications. In this review, recent studies of PSDs based on 2D materials are summarized, providing a promising route for high-performance PSDs.

二维（2D）材料，例如石墨烯和过渡金属硫属元素化物，由于其优异的电子和光学性能而得到了广泛的研究。近年来，由于材料或结的横向光电效应，二维材料已在位置敏感检测器（PSD）中显示了巨大的实际应用。基于2D材料的PSD的高位置灵敏度和超快光响应，特别是与Si技术的兼容性，可能会实现多种光电应用。在这篇综述中，总结了基于2D材料的PSD的最新研究，为高性能PSD提供了有希望的途径。