Preparation of arsenene and its applications in sensors

Abstract

Abstract As an element of the graphene family, arsenic has attracted extensive attention due to its excellent photoelectric and transport properties. Arsenene conforms to an eight-electron coordination and spontaneously forms a wavy two-dimensional (2D) structure, which is more stable than other 2D materials. The adjustable bandgap makes it stand out from many 2D materials, and its unique semiconductor properties make it widely used in field-effect transistors. In recent years, different subtypes of arsenene have gradually been discovered. Due to their special gas-response characteristics, arsenenes have great application potential as gas-sensitive materials or resistance elements in the field of sensors. Defective arsenic and arsenene modified by atoms provide more possibilities and creative solutions for gas sensing. In this paper, the properties, preparation methods, and applications of arsenene in sensing in recent years are reviewed. The advantages and disadvantages of arsenene are introduced, and the development prospect of arsenene is investigated.