Novel two-dimensional AlSb and InSb monolayers with a double-layer honeycomb structure: a first-principles study.

Autor: Bafekry A; Department of Radiation Application, Shahid Beheshti University, 19839 69411 Tehran, Iran. bafekry.asad@gmail.com., Faraji M, Fadlallah MM, Jappor HR, Karbasizadeh S, Ghergherehchi M, Sarsari IA, Ziabari AA
Jazyk: angličtina
Zdroj: Physical chemistry chemical physics : PCCP [Phys Chem Chem Phys] 2021 Sep 14; Vol. 23 (34), pp. 18752-18759. Date of Electronic Publication: 2021 Aug 19.
DOI: 10.1039/d1cp02590b
Abstrakt: In this work, motivated by the fabrication of an AlSb monolayer, we have focused on the electronic, mechanical and optical properties of AlSb and InSb monolayers with double-layer honeycomb structures, employing the density functional theory approach. The phonon band structure and cohesive energy confirm the stability of the XSb (X = Al and In) monolayers. The mechanical properties reveal that the XSb monolayers have a brittle nature. Using the GGA + SOC (HSE + SOC) functionals, the bandgap of the AlSb monolayer is predicted to be direct, while InSb has a metallic character using both functionals. We find that XSb (X = Al, In) two-dimensional bodies can absorb ultraviolet light. The present findings suggest several applications of AlSb and InSb monolayers in novel optical and electronic usages.
Databáze: MEDLINE