Investigation of B and CO adsorption on silicene nanoribbons for sensor applications

The contemporary advancement of science and technology is indispensable within the realm of nanotechnology. This study delves into the electromagnetic and optical properties of silicene nanoribbons (SiNRs) upon adsorption of boron (B) and carbon monoxide (CO) molecules. The SiNRs investigated in this research are one-dimensional materials, characterized by a free dimension along the 0z axis, a thickness of one silicon (Si) atom along the 0x axis, a thickness of six Si atoms along the 0 y axis, and two edges functionalized with hydrogen. The findings of this study reveal that the B adsorption configuration induces metallic properties, whereas the CO adsorption configuration imparts semiconductor characteristics, characterized by a narrow energy bandgap. A comprehensive analysis of electromagnetic properties, structural alterations, intricate multi-orbital hybridization processes, and charge density disparities has been systematically conducted. Notably, the optical properties of these adsorption systems demonstrate pronounced activity in the low-energy radiation spectrum, particularly in the ultraviolet region. Significantly, the real component of the dielectric function along the 0z axis exhibits negative values. Given that the 0z direction represents the material's free dimension, it proves exceptionally conducive to communication applications with minimal energy loss. Furthermore, absorption coefficient investigations reveal optical asymmetry in the low-energy region, rendering the material optically transparent to radiation with energies exceeding Ultraviolet-C (UVC). These research findings hold promising implications for the development of storage devices and sensing applications involving B and CO within the realm of nanotechnology.