Abstract: A novel 2D layered material BP with adjustable bandgap can ll the gap between graphene and TMD. Since its discovery, this new type of 2D material attracted much attention of researchers, own to its unique 2D structure and photoelectric properties. It is noteworthy that BP is a very promising ultra-compact nonlinear optical material with excellent nonlinear performance. In this review, we summarize the preparation methods of 2D BP, and focus on its unique optoelectronic properties and application in optoelectronic devices. At the end of this article, we also discuss the application prospects of BP and present some of the problems to be solved at this stage.

Key words: two-dimensional material; black phosphorus, preparation; photoelectric characteris- tics; photoelectric applications