Recent Progress on a Two-Dimensional Semiconductor, Black Phosphorus

Black phosphorus is a two-dimensional (2D) material that has attracted growing interest in the field of condensed-matter physics, materials science, and semiconductor engineering. Owing to its intrinsic direct bandgap, black phosphorus has shown a range of promising device characteristics, such as high mobility and on/off ratio, strong light-matter interaction, and anisotropic thermoelectric properties, which are useful for application in nanoelectronic and optoelectronic devices. More importantly, these properties of black phosphorus can be tuned by varying its thickness, strain, and electric field. In this article, I briefly introduce recent progress in this emerging field of black phosphorus and present future perspectives.