Two-dimensional black phosphorus has sparked enormous research interest due to its high carrier mobility, layer-dependent direct bandgap and outstanding in-plane anisotropic property. It is one of the few 2D materials where it is possible to tune the bandgap over a wide energy range from the visible to the IR spectrum. A team led by Assistant professor Lu Jiong has demonstrated an electrical field-controlled giant Stark effect in black phosphorus for potential applications in advanced electro-optic devices. This work has recently been published in Nano Letters (DOI:10.1021/acs.nanolett.6b05381) and highlighted in Nature Photonics (doi:10.1038/nphoton.2017.102).
