Defects investigation of bipolar exfoliated phosphorene nanosheets

• Defects analysis of bipolar exfoliated phosphorene nanosheets using high-resolution transmission electron microscopy (TEM). Formation the mono- and di-vacancies, ad-atoms, grain boundary defects in nanosheets. The breakage P-P bonds upon surface oxidation results amorphization Chemisorption process high sensitivity to oxygen. Two-dimensional (2D) has gained attention due its exceptional chemical, physical, optoelectronic properties. However, through experimental techniques is still largely missing. In this paper, a combination (HRTEM) imaging density functional theory calculations were provided study point defects, boundaries (GBs), phenomenon via electrochemistry method. HRTEM demonstrate that single vacancies (SV) di-vacancies (DV), GBs are formed black phosphorus maintained orthorhombic crystal structure. addition, on edges unavoidable presence Our first-principles simulation confirms oxidation, which amorphization. defect obtained from could benefit both fundamental research technological applications.