Recent progress of Optoelectronic Applications Based on 2D WSe2 Nanomaterials and heterostructures ：A Review

Abstract

Tungsten diselenide (WSe2) is extensively investigated as a channel optoelectrode material with remarkable optical, electrical, magnetic properties and mechanical flexibility. Due to the high absorption coefficient, high switch ratio, exceptional quantum yield and adjustable direct band gap, nano-WSe2-based devices is well suitable for the fabrication of high-speed optoelectronic devices and is also a possible candidate for nanoelectronics and flexible electronic application. Considering the rapidly growing research enthusiasm on this topic over the past several years, here the recent progress on various optical and electrical devices of two-dimensional (2D) WSe2 Nanomaterials and heterostructures is attempted to collect, including sensors, photodetectors, light-emitting diodes (LEDs), memory and field effect transistors (FETs). In addition, the challenges and prospects for the future research direction of 2D WSe2 in optoelectical field are proposed which will provide new perspectives to facilitate the development of 2D nanomaterials-based optoelectronic applications.