Janus Ga₂SeTe/In₂SSe heterostructures: tunable electronic, optical, and photocatalytic properties

Abstract

Stacks of two dimensional materials vertically into van der Waals (vdW) heterostructures (HS) is deemed to be effective strategy to tailor their physical properties and enrich their applications in modern...

Electronic and optical properties of Janus Ga2STe bilayer: a promising candidate for excitonic solar cell

“…This indicates that the observed bilayers were very active in the visible light range accounting for approximately 43% of the sunlight. Also, the absorption coefficients in the visible light region were comparable to other two-dimensional bilayers with similar structures like Ga 2 SeTe/In 2 SSe (∼10 5 cm −1 ); 60 Ga 2 STe/GaInS 2 (∼10 5 cm −1 ); 61 Ga 2 S 3 /Ga 2 SSe (∼10 4 cm −1 ). 29 As a result, Janus Ga 2 STe bilayers could be considered candidates for optoelectronic devices due to the effective utilization of sunlight.…”

Electronic structures and photovoltaic applications of vdW heterostructures based on Janus group-IV monochalcogenides: insights from first-principles calculations

“…26 Gong et al grew TMD heterostructures of size larger than 169 μm through a two-step chemical vapor deposition, and the strong photocurrent response and photovoltaic effect with a high quantum efficiency of the heterostructures have been detected. 27 In addition to vdW heterostructures based on 2D TMD, various 2D heterostructures have been reported with type II band alignment, such as heterostructure based on group-III monochalcogenides, 2,28,29 group-IV monochalcogenides, 30,31 and phosphorene. 32–34 Excellent power conversion efficiency (PCE) has been reported in InS/InSe 2 , Mo 2 SeTe/W 2 STe, 35 and phosphorene/MoS 2 34 heterostructures.…”

Monolayers of Germanene/Janus Ga2SeTe van der Waals Heterostructures by First-Principles Calculations for High-Performance Optoelectronic Devices

“…In recent years, Janus vdWHs have been widely studied and classified into three categories: Janus TMDs–TMDs, , Janus TMDs–graphene, , and heterostructures composed of Janus TMDs and other traditional 2D materials. − Many studies have found that these Janus vdWHs exhibited promising potential in terms of electronic properties, photocatalytic properties, Rashba effect, and piezoelectric effect. For instance, Lin et al investigated the physical structure and optoelectronic properties of Janus Ga 2 SeTe/In 2 SSe heterostructures, and the materials have been found to be promising for applications in the visible and UV systems. Nguyen et al investigated the interfacial and optical properties of graphene/Ga 2 SSe vdWHs, demonstrating its potential for application in Schottky nanodevices.…”