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\subsection{\texorpdfstring{Structural properties of phosphorene oxides}{Structural properties of phosphorene oxides}}
\label{sec:structural_properties_of_phosphorene_oxides}


Due to the existence of a lone pair of electrons on each P atom, 
phosphorene can be easily oxidized. At first, we have investigated 
the structural stability of PO\textsubscript{\emph{x}} with 0\textless \emph{x}\textless 1. 
For every given 0\textless \emph{x}\textless 1 of PO\textsubscript{\emph{x}}, diverse configurations 
are considered and optimized to find its equilibrium structure to know 
whether such a phosphorene oxide can be formed or not.

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