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Black phosphorene is not stable at ambient conditions, so atomic defects andoxidation effects are unavoidable in black phosphorus samples in theexperiment. The effects of these defects on the performance of the blackphosphorus nanoresonators are still unclear. Here, we perform classicalmolecular dynamics to investigate the effects of the vacancy and oxidation onsingle-layer black phosphorus nanoresonators at different temperatures. We findthat the vacancy causes strong reduction in the quality factor of thenanoresonators, while the oxidation has weaker effect on the nanoresonators.More specifically, a 2% concentration of randomly distributed single vacanciesis able to reduce the quality factor by about 80% and 40% at 4.2K and 50K,respectively. We also find that the quality factor of the nanoresonator is notsensitive to the distribution pattern of the vacancy defects.

The Effects of Vacancy and Oxidation on Black Phosphorus Nanoresonators