“…Two-dimensional (2D) layered materials have received great attention due to their atomically flat surface, unique structures, and excellent physical properties, which have been widely applied in the fields of electronics, photoelectronics, energy storage, and sensors. − 2D semiconducting transition metal dichalcogenides (TMDs) are excellent candidates for constructing photodetectors because of their flexible energy band gap characteristics, high light absorption, and strong light-matter interaction. − As a typical TMD semiconductor, ReS 2 presents a direct band gap independent of thickness, strong anisotropy-dependent optical properties, weak interlayer coupling, and unique twisted 1T structure. − For example, the ReS 2 device demonstrated a responsivity of 4 A W −1 and got a microsecond response time (20 μs) . However, the large dark current, low responsivity, and long response time limit the practical application of the ReS 2 device in the field of photodetectors.…”