Photodetectors based on 2D materials and their heterostructures

Two-dimensional (2D) materials have attract increasing interest in the past few years because of their good photoelectric, thermal and mechanical properties. In this paper, the photodetector of the two-dimensional material is taken as the main research object, at the same time, four kinds of photodetectors based on two-dimensional materials and their research status are introduced in detail. The methods of increasing the light absorption rate and improving the preparation of twodimensional material are put forward to improve the performance of photodetector. We fabricated a photodetector demo by MoS2, and it shows a relatively high photoresponsivity and fast response time. Finally, the development prospect of two-dimensional material photodetector is prospected.