Electronic and optical properties of phosphorene-like arsenic phosphorus: a many-body study. (7th March 2018)

• Record Type: Journal Article
• Authors: Shu, Huabing; Guo, Jiyuan
• Is Part Of: Materials research express. Volume 5:Number 3(2018)
• Publication Date: 2018-03-07
• Subjects: arsenic phosphorus -- quasiparticle band structure -- optical property -- exciton; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/aaace5
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: By employing density functional and many-body perturbation theories, we explore the geometrics, quasiparticle band structure, and optical response of two-dimensional arsenic phosphorus ( α -Asx P1−x ). Calculations indicate that the α -Asx P1−x exhibits excellent stability at high temperature. The quasi-particle bandgap of α -Asx P1−x is highly tunable in a broad range of 1.54–2.14 eV depending on the composition. The optical absorption of α -Asx P1−x can cover the visible and ultraviolet regions, and is highly anisotropic. More interestingly, it is tunable to optical absorption of α -Asx P1−x when the composition continuously increased. Also, they have sizable exciton binding energies. These findings suggest that α -Asx P1−x holds great potentials for applications in high-performance electronics and optoelectronics.