Assessing the Structural Diversity of Form II Red Phosphorus via Stepwise Crystal Structure Search.

Recently, the long less-known Form II red phosphorus (RP) (viz. Type II RP) was ascertained by the state-of-the-art 3-dimensional electron diffraction technique with a triclinic lattice, completely distinct from other known elemental phosphorus and leaving atomic coordinates not determined. The cell composed of ∼250 atoms might exceed the capacity of current readily available crystal structure search packages, which have been widely applied to systems with several tens of atoms.

Polarization conversion in bottom-up grown quasi-1D fibrous red phosphorus flakes.

Fibrous red phosphorus (RP) has triggered growing attention as an emerging quasi-one-dimensional (quasi-1D) van der Waals crystal recently. Unfortunately, it is difficult to achieve substrate growth of high-quality fibrous RP flakes due to their inherent quasi-1D structure, which impedes their fundamental property exploration and device integration. Herein, we demonstrate a bottom-up approach for the growth of fibrous RP flakes with (001)-preferred orientation via a chemical vapor transport (CVT) reaction in the P/Sn/I system.

Unveiling the Degradation Chemistry of Fibrous Red Phosphorus under Ambient Conditions.

The practical applications of fibrous red phosphorus (FRP), an emerging quasi-one-dimensional material, might be hindered by its environmental instability. Although other phosphorus allotropes such as white phosphorus, violet phosphorus, and black phosphorus are reported unstable under ambient conditions, the chemical stability of FRP remains unexplored. Herein, we investigate the degradation chemistry of FRP by combining experimental study and density functional theory calculations.

Uniform Tellurium Doping in Black Phosphorus Single Crystals by Chemical Vapor Transport.

Doping has been a reliable way to improve the properties of black phosphorus (BP). However, a uniform and large amount of doping in BP remains a challenge. Herein, the synthesis of tellurium-doped black phosphorus (Te-doped BP) single crystals with high crystalline quality is achieved by the chemical vapor transport reaction method.