Superior optical and thermoelectric properties of bilayer β12-like phase borophene synthesized on Cu(111) film

Abstract

In this work, motivated by a recent experimental report, we theoretically investigate the electronic properties, optical properties, and thermoelectric characteristics of bilayer (BL) β₁₂-like phase borophene synthesized on a Cu(111) substrate. Our results demonstrate the strong coupling between the Cu film and borophene layers, with the β₁₂-like phase borophene exhibiting metallic properties. The BL borophene exhibits strong absorption peaks in the infrared (IR) and visible regions (VR). The β₁₂-like phase borophene manifests superior thermoelectric properties. The results of this work provide insight into BL borophene synthesized on the Cu(111) substrate, and have potential applications in a range of fields such as in optical sensors and thermoelectric devices.