  Antimony shows promise as a two-dimensional (2D) mono-elemental crystal,
referred to as antimonene. When exposed to ambient conditions, antimonene
layers react with oxygen, forming new crystal structures, leading significant
changes in electronic properties. These changes are influenced by the degree of
oxidation. Utilizing Density Functional Theory (DFT) calculations, stable
configurations of bilayer antimony oxide and their corresponding electronic
properties are studied. Additionally, different stacking arrangements and their
effects on the physical properties of the materials are investigated.
Furthermore, the analysis encompasses strain-free hetero-bilayers containing
both pristine and oxidized antimonene layers, aiming to understand the
interplay between these materials and their collective impact on the bilayer
properties. Our results provide insight into how the properties of
antimony-based bilayer structures can be modified by adjusting stoichiometry
and stacking configurations.
