Photogalvanic Effect in Graphene‐like BC2P Monolayer from First Principles. Issue 8 (5th June 2022)

• Record Type: Journal Article
• Authors: Fu, Xi; Cheng, Xiaoli; Liao, Wenhu; Guo, Jiyuan; Gao, Haixia; Li, Liming
• Is Part Of: Physica status solidi. Volume 16:Issue 8(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-06-05
• Subjects: first-principles calculation -- monolayers -- photogalvanic effect -- vacancy; Solid state physics -- Periodicals; 530.4105
• DOI: 10.1002/pssr.202200132
• Languages: English
• ISSNs: 1862-6254

Abstract

Abstract : Herein, linear photogalvanic effect (PGE) phenomena in the BC2 P monolayer without and with P‐, B‐, C‐vacancies, and P‐doping, respectively, is investigated, based on density functional theory (DFT) within the nonequilibrium Green's function (NEGF) formalism. It is found that a robust linear PGE at the visible light range is produced in both zigzag and armchair directions for the BC2 P photodetector, and photoresponse in the armchair direction is greater by three orders of magnitude than that in the zigzag direction, forming a strong anisotropy on PGE. Moreover, the BC2 P armchair photodetector possesses relatively high extinction ratio corresponding to a more sensitive polarization detection. However, except for C‐vacancy case, B‐vacancy, P‐vacancy, P‐doping(B), and P‐doping(C) could not enhance the PGE of armchair photodetector. This work demonstrates further application of the BC2 P monolayer for novel electronic and optoelectronic devices. Abstract : Herein, linear photogalvanic effect (PGE) phenomena in the BC2 P monolayer is investigated. A robust linear PGE and a strong anisotropy on PGE at the visible light range are produced. This work demonstrates further application of the BC2 P monolayer for novel electronic and optoelectronic devices.