Spatially indirect excitons in black and blue phosphorene double layers

Abstract

Monolayer black and blue phosphorenes possess electronic and optical properties that result in unique features when the two materials are stacked. We devise a low-strain van-der-Waals double layer and investigate its properties with ab initio many-body perturbation theory techniques. A type-II band alignment and optical absorption in the visible range are found. The study demonstrates that spatially indirect excitons with full charge separation can be obtained between two layers with the same elemental composition but different crystalline structure, proving the system interesting for further studies where dipolar excitons are important and for future opto-electronic applications.

References in corpus (28)

• Electric Field Effect in Atomically Thin Carbon Films
• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• Black phosphorus field-effect transistors
• Advanced capabilities for materials modelling with Quantum ESPRESSO
• Phosphorene: A New 2D Material with High Carrier Mobility
• Rediscovering Black Phosphorus: A Unique Anisotropic 2D Material for Optoelectronics and Electronics
• Tunable Band Gap and Anisotropic Optical Response in Few-layer Black Phosphorus
• Isolation and characterization of few-layer black phosphorus
• Yambo: an \textit{ab initio} tool for excited state calculations
• Semiconducting layered blue phosphorus: A computational study
• Strain engineered direct-indirect band gap transition and its mechanism in 2D phosphorene
• Ab initio calculation of excitonic effects in the optical spectra of semiconductors
• Direct Observation of Layer-Dependent Electronic Structure in Phosphorene
• Quasiparticle band structure and tight-binding model for single- and bilayer black phosphorus
• High-temperature superfluidity with indirect excitons in van der Waals heterostructures
• Many-body perturbation theory calculations using the yambo code
• Recent advances in MXenes: from fundamentals to applications
• Tuning of the electronic and optical properties of single layer black phosphorus by strain
• The Nature of the Interlayer Interaction in Bulk and Few-Layer Phosphorus
• Epitaxial Synthesis of Blue Phosphorene
• Device physics of van der Waals heterojunction solar cells
• A New Phosphorus Allotrope with Direct Band Gap and High Mobility
• Exciton Relaxation Cascade in Two-dimensional Transition-metal dichalcogenides
• Comparative study of phonon spectrum and thermal expansion of graphene, silicene, germanene and blue phosphorene
• Localized bright luminescence of indirect excitons and trions in MoSe${}_2$/WSe${}_2$ van der Waals heterostructure
• Many-body quantum Monte Carlo study of 2D materials: cohesion and band gap in single-layer phosphorene
• Improvements in the $GW$ and Bethe-Salpeter-equation calculations on phosphorene
• High temperature electron-hole superfluidity with strong anisotropic gaps in double phosphorene monolayers

Cited by in corpus (3)

• First-Principles Calculations of Exciton Radiative Lifetimes in Monolayer Graphitic Carbon Nitride Nanosheets: Implications for Photocatalysis
• Interlayer and intralayer excitons in AlN/WS${}_2$ heterostructure
• Electromechanical Switching and Momentum-Selective Transport in Geometry-Defined Blue Phosphorus Homojunctions