Observation of giant bandgap renormalization and excitonic effects in a monolayer transition metal dichalcogenide semiconductor

Abstract

Two-dimensional (2D) transition metal dichalcogenides (TMDs) exhibit novel electrical and optical properties and are emerging as a new platform for exploring 2D semiconductor physics. Reduced screening in 2D results in dramatically enhanced electron-electron interactions, which have been predicted to generate giant bandgap renormalization and excitonic effects. Currently, however, there is little direct experimental confirmation of such many-body effects in these materials. Here we present an experimental observation of extraordinarily large exciton binding energy in a 2D semiconducting TMD. We accomplished this by determining the single-particle electronic bandgap of single-layer MoSe2 via scanning tunneling spectroscopy (STS), as well as the two-particle exciton transition energy via photoluminescence spectroscopy (PL). These quantities yield an exciton binding energy of 0.55 eV for monolayer MoSe2, a value that is orders of magnitude larger than what is seen in conventional 3D semiconductors. This finding is corroborated by our ab initio GW and Bethe Salpeter equation calculations, which include electron correlation effects. The renormalized bandgap and large exciton binding observed here will have a profound impact on electronic and optoelectronic device technologies based on single-layer semiconducting TMDs.

arXiv commentAccepted for publication in Nature Materials

References in corpus (23)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• Atomically thin MoS2: A new direct-gap semiconductor
• Van der Waals Density Functional for General Geometries
• Control of valley polarization in monolayer MoS2 by optical helicity
• Valley polarization in MoS2 monolayers by optical pumping
• Observation of tightly bound trions in monolayer MoS2
• MoS_2 as an ideal material for valleytronics: valley-selective circular dichroism and valley Hall effect
• Field-effect tunneling transistor based on vertical graphene heterostructures
• Substrate-induced band gap opening in epitaxial graphene
• Optical Spectrum of MoS${}_2$: Many-body Effects and Diversity of Exciton States
• Extraordinary room-temperature photoluminescence in WS2 monolayers
• Electrical Control of Two-Dimensional Neutral and Charged Excitons in a Monolayer Semiconductor
• Optical Generation of Excitonic Valley Coherence in Monolayer WSe2
• Direct observation of the transition from indirect to direct bandgap in atomically thin epitaxial MoSe2
• BerkeleyGW: A Massively Parallel Computer Package for the Calculation of the Quasiparticle and Optical Properties of Materials and Nanostructures
• p-type Bi2Se3 for topological insulator and low temperature thermoelectric applications
• Van der Waals density functional: an appropriate exchange functional
• Direct imaging of the band profile in single layer $Mo{S}_2$ on graphite: quasiparticle energy gap, metallic edge states and edge band bending
• Electron states of mono- and bilayer graphene on SiC probed by STM
• Scanning tunneling spectroscopy of inhomogeneous electronic structure in monolayer and bilayer graphene on SiC
• Physical origin of satellite in photoemission of doped graphene: An ab-initio GW plus cumulant study
• Role of pseudospin in quasiparticle interferences in epitaxial graphene probed by high-resolution scanning tunneling microscopy
• On the Connection of Anisotropic Conductivity to Tip Induced Space Charge Layers in Scanning Tunneling Spectroscopy of p-doped GaAs

Cited by in corpus (478)

• Excitons in atomically thin transition metal dichalcogenides
• Optical modulators with two-dimensional layered materials
• Measurement of the optical dielectric function of transition metal dichalcogenide monolayers: MoS2, MoSe2, WS2 and WSe2
• Polaritons in layered 2D materials
• The Computational 2D Materials Database: High-Throughput Modeling and Discovery of Atomically Thin Crystals
• Tightly bound excitons in monolayer WSe2
• Computational 2D Materials Database: Electronic Structure of Transition-Metal Dichalcogenides and Oxides
• k.p theory for two-dimensional transition metal dichalcogenide semiconductors
• Magnetic Control of Valley Pseudospin in Monolayer WSe2
• Exciton physics and device application of two-dimensional transition metal dichalcogenide semiconductors
• Direct Observation of Layer-Dependent Electronic Structure in Phosphorene
• Characterization of collective ground states in single-layer NbSe2
• Exciton Binding Energy of Monolayer WS2
• Non-linear Optical Spectroscopy of Excited Exciton States for Efficient Valley Coherence Generation in WSe2 Monolayers
• Recent Progress of the Computational 2D Materials Database (C2DB)
• Electrical Control of Second-Harmonic Generation in a WSe2 Monolayer Transistor
• Valley Splitting and Polarization by the Zeeman Effect in Monolayer MoSe2
• Exciton-polaritons in van der Waals heterostructures embedded in tunable microcavities
• Exciton Radiative Lifetime in Transition Metal Dichalcogenide Monolayers
• Atomically Thin Resonant Tunnel Diodes built from Synthetic van der Waals Heterostructures
• The GW compendium: A practical guide to theoretical photoemission spectroscopy
• Screening and Many-Body Effects in Two-Dimensional Crystals: Monolayer MoS${}_2$
• Photo-Induced Bandgap Renormalization Governs the Ultrafast Response of Single-Layer MoS2
• Gate-induced Superconductivity in atomically thin MoS2 crystals
• In-plane Propagation of Light in Transition Metal Dichalcogenide Monolayers: Optical Selection Rules
• Graphene on transition-metal dichalcogenides: a platform for proximity spin-orbit physics and optospintronics
• Exciton Diamagnetic Shifts and Valley Zeeman Effects in Monolayer WS${}_2$ and MoS${}_2$ to 65 Tesla
• Two-dimensional semiconductors in the regime of strong light-matter coupling
• Van der Waals Materials for Atomically-Thin Photovoltaics: Promise and Outlook
• Bottom-up design of spin-split and reshaped electronic band structures in spin-orbit-coupling free antiferromagnets: Procedure on the basis of augmented multipoles
• Valley excitons in two-dimensional semiconductors
• Room-temperature Continuous-wave Lasing from Monolayer Molybdenum Ditelluride with a Silicon Nanobeam Cavity
• Binding energies of exciton complexes in transition metal dichalcogenides and effect of dielectric environment
• Charged excitons in monolayer WSe${}_2$: experiment and theory
• Direct Measurement of Exciton Valley Coherence in Monolayer WSe${}_2$
• Exciton Valley Dynamics probed by Kerr Rotation in WSe2 Monolayers
• Identifying substitutional oxygen as a prolific point defect in monolayer transition metal dichalcogenides with experiment and theory
• Trivial and inverted Dirac bands, and emergence of quantum spin Hall states in graphene on transition-metal dichalcogenides
• Splitting between Bright and Dark excitons in Transition Metal Dichalcogenide Monolayers
• Nonanalyticity, Valley Quantum Phases, and Light-like Exciton Dispersion in Monolayer TMDs: Theory and First-Principles Calculations
• Trion induced negative photoconductivity in monolayer MoS2
• Excitons in van der Waals heterostructures: The important role of dielectric screening
• Chemically Tailoring Semiconducting Two-Dimensional Transition Metal Dichalcogenides and Black Phosphorus
• Room temperature Tamm-Plasmon Exciton-Polaritons with a WSe2 monolayer
• Observation of charge density wave order in 1D mirror twin boundaries of single-layer MoSe2
• Revealing the Biexciton and Trion-exciton Complexes in BN Encapsulated WSe2
• Evidence for Fast Interlayer Energy Transfer in MoSe2/WS2 Heterostructures
• Probing the influence of dielectric environment on excitons in monolayer WSe2: Insight from high magnetic fields
• Brightening of dark excitons in monolayers of semiconducting transition metal dichalcogenides
• Nano Superconducting Quantum Interference device: a powerful tool for nanoscale investigations
• Vibrational and optical properties of MoS${}_2$: from monolayer to bulk
• Structural and Electrical Properties of MoTe${}_2$ and MoSe${}_2$ Grown by Molecular Beam Epitaxy
• Optical properties of atomically thin transition metal dichalcogenides: Observations and puzzles
• Spin-orbit engineering in transition metal dichalcogenide alloy monolayers
• Visualizing Exotic Orbital Texture in the Single-Layer Mott Insulator 1T-TaSe2
• Topological superconductivity in monolayer transition metal dichalcogenides
• A systematic study of structural, electronic and optical properties of atomic scale defects in 2D transition metal dichalcogenides MX${}_2$ (M = Mo,W; X = S, Se, Te)
• Ultrafast transition between exciton phases in van der Waals heterostructures
• Interlayer excitons and Band Alignment in MoS${}_2$/hBN/WSe${}_2$ van der Waals Heterostructures
• Emergence of a Metal-Insulator Transition and High Temperature Charge Density Waves in VSe2 at the Monolayer Limit
• Probing critical point energies of transition metal dichalcogenides: surprising indirect gap of single layer $SL-WS{e}_2$
• Simple Screened Hydrogen Model of Excitons in Two-Dimensional Materials
• Spectroscopic studies of atomic defects and bandgap renormalization in semiconducting monolayer transition metal dichalcogenides
• Imaging moiré flat bands in 3D reconstructed WSe2/WS2 superlattices
• Exciton Dynamics in Monolayer Transition Metal Dichalcogenides
• Atomistic defect states as quantum emitters in monolayer MoS${}_2$
• Fine Structure and Lifetime of Dark Excitons in Transition Metal Dichalcogenide Monolayers
• Enhanced Light-Matter Interaction in Two-Dimensional Transition Metal Dichalcogenides
• Large spin-orbit splitting of deep in-gap defect states of engineered sulfur vacancies in monolayer WS2
• Strongly bound excitons in anatase TiO2 single crystals and nanoparticles
• Point Defects and Localized Excitons in 2D WSe2
• Excitons versus electron-hole plasma in monolayer transition metal dichalcogenide semiconductors
• A first-principles study of van der Waals interactions and lattice mismatch at MoS2/metal interfaces
• Thickness dependence of work function, ionization energy, and electron affinity of Mo and W dichalcogenides from DFT and GW calculations
• Intervalley biexcitons and many-body effects in monolayer MoS2
• High quality atomically thin PtSe2 films grown by molecular beam epitaxy
• Electronic Structure, Surface Doping, and Optical Response in Epitaxial WSe2 Thin Films
• Rotationally Commensurate Growth of MoS2 on Epitaxial Graphene
• Interlayer exciton dynamics in a dichalcogenide monolayer heterostructure
• Control of Exciton Valley Coherence in Transition Metal Dichalcogenide Monolayers
• Dissociation of two-dimensional excitons in monolayer WSe2
• Twist Angle Dependent Interlayer Exciton Lifetimes in van der Waals Heterostructures
• Fundamental Limits of Exciton-Exciton Annihilation for Light Emission in Transition Metal Dichalcogenide Monolayers
• Polarization and time-resolved photoluminescence spectroscopy of excitons in MoSe2 monolayers
• Determination of layer-dependent exciton binding energies in few-layer black phosphorus
• Nanophotonics with 2D Transition Metal Dichalcogenides
• Brightened spin-triplet interlayer excitons and optical selection rules in van der Waals heterobilayers
• A- and B-Exciton Photoluminescence Intensity Ratio as a Measure of Sample Quality for Transition Metal Dichalcogenide Monolayers
• Defect-induced modification of low-lying excitons and valley selectivity in monolayer transition metal dichalcogenides
• Electronic Structure of Epitaxial Single-Layer MoS${}_2$
• The dielectric impact of layer distances on exciton and trion binding energies in van der Waals heterostructures
• 2D MoS2-Graphene-based multilayer van der Waals heterostructures: Enhanced charge transfer and optical absorption, and electric-field tunable Dirac point and band gap
• Direct exciton emission from atomically thin transition metal dichalcogenide heterostructures near the lifetime limit
• Resonance effects in the Raman scattering of mono- and few layers MoSe${}_2$
• Observation of Ultrafast Free Carrier Dynamics in Single Layer MoS${}_2$
• Single-layer MoS${}_2$ on Au(111): band gap renormalization and substrate interaction
• Proximity effects in bilayer graphene on monolayer WSe${}_2$: Field-effect spin-valley locking, spin-orbit valve, and spin transistor
• Enabling valley selective exciton scattering in monolayer WSe${}_2$ through upconversion
• Colloquium: Physical properties of group-IV monochalcogenide monolayers
• Observation of Topologically Protected States at Crystalline Phase Boundaries in Single-layer WSe2
• Electrical tuning of exciton-plasmon polariton coupling in monolayer MoS2 integrated with plasmonic nanoantenna lattice
• Carrier Plasmon Induced Nonlinear Band Gap Renormalization in Two-Dimensional Semiconductors
• Synthesis of Epitaxial Single-Layer MoS${}_2$ on Au(111)
• Observation of exciton redshift-blueshift crossover in monolayer WS2
• Exciton diffusion in WSe2 monolayers embedded in a van der Waals heterostructure
• Quasiparticle Band Gaps, Excitonic Effects, and Anisotropic Optical Properties of Monolayer Distorted 1-T Diamond-chain Structures
• Probing the Role of Interlayer Coupling and Coulomb Interactions on Electronic Structure in Few-Layer MoSe2 Nanostructures
• Exciton band structure in two-dimensional materials
• Molecular-beam epitaxy of monolayer and bilayer WSe2: A scanning tunneling microscopy/spectroscopy study and deduction of exciton binding energy
• Exciton-phonon coupling in MoSe2 monolayers
• Tunable Quasiparticle Band Gap in Few Layer GaSe/graphene Van der Waals Heterostructures
• How Substitutional Point Defects in Two-Dimensional WS${}_2$ Induce Charge Localization, Spin-Orbit Splitting, and Strain
• Layer-by-layer epitaxial growth of scalable WSe2 on sapphire by molecular-beam epitaxy
• Stable biexcitons in two-dimensional metal-halide perovskites with strong dynamic lattice disorder
• Davydov splitting and excitonic resonance effects in Raman spectra of few-Layer MoSe2
• Magneto-optics in transition metal diselenide monolayers
• Optical response of monolayer, few-layer and bulk tungsten disulfide
• Berry phase modification to the energy spectrum of excitons
• Cascaded emission of single photons from the biexciton in monolayered WSe2
• Spontaneous Antisymmetric Spin Splitting in Noncollinear Antiferromagnets without Spin-Orbit Coupling
• Environmentally-Sensitive Theory of Electronic and Optical Transitions in Atomically-Thin Semiconductors
• Giant Gating Tunability of Optical Refractive Index in Transition Metal Dichalcogenide Monolayers
• Ultrafast Band Structure Control of a Two-Dimensional Heterostructure
• Optical spectroscopy of excited exciton states in MoS2 monolayers in van der Waals heterostructures
• Exciton Relaxation Cascade in Two-dimensional Transition-metal dichalcogenides
• Point Defects and Grain Boundaries in Rotationally Commensurate MoS2 on Epitaxial Graphene
• Graphdiyne-metal contacts and graphdiyne transistors
• The bright side of defects in MoS${}_2$ and WS${}_2$ and a generalizable chemical treatment protocol for defect passivation
• Ohmic contacts to 2D semiconductors through van der Waals bonding
• Giant spin-splitting and gap renormalization driven by trions in single-layer WS${}_2$/h-BN heterostructures
• Rigid band shifts in two-dimensional semiconductors through environmental screening
• Cavity control of Excitons in two dimensional Materials
• Stark effect spectroscopy of mono- and few-layer MoS${}_2$
• Binding energies and spatial structures of small carrier complexes in monolayer transition metal dichalcogenides via diffusion Monte Carlo
• Molecular beam epitaxy growth and scanning tunneling microscopy study of TiSe${}_2$ ultrathin films
• Exciton mapping at subwavelength scales in two-dimensional materials
• Intrinsic and Extrinsic Defect-related Excitons in TMDCs
• Engineering of Neutral Excitons and Exciton Complexes in Transition Metal Dichalcogenide Monolayers through External Dielectric Screening
• Crystalline and electronic structure of single-layer TaS${}_2$
• Zeeman Splitting and Inverted Polarization of Biexciton Emission in Monolayer WS2
• Optically discriminating carrier-induced quasiparticle band gap and exciton energy renormalization in monolayer MoS2
• Highly-Oriented Atomically Thin Ambipolar MoSe${}_2$ Grown by Molecular Beam Epitaxy
• Shedding Light on Moire Excitons: A First-Principles Perspective
• Direct Observation of Gate Tunable Dark Trions in Monolayer WSe2
• Strongly bound Mott-Wannier Excitons in GeS and GeSe monolayers
• Near-unity light absorption in a monolayer WS2 van der Waals heterostructure cavity
• Guide to optical spectroscopy of layered semiconductors
• Charge versus energy transfer in atomically-thin graphene-transition metal dichalcogenide van der Waals heterostructures
• Band gap measurements of monolayer h-BN and insights into carbon-related point defects
• Exciton states in monolayer MoSe2: impact on interband transitions
• Substrate screening effects on the quasiparticle band gap and defect charge transition levels in MoS${}_2$
• Suppressing Diffusion-Mediated Exciton Annihilation in 2D Semiconductors Using the Dielectric Environment
• Coupling single photons from discrete quantum emitters in WSe${}_2$ to lithographically defined plasmonic slot-waveguides
• Probing and manipulating valley coherence of dark excitons in monolayer WSe${}_2$
• Towards Fully Converged GW Calculations for Large Systems
• Band gap renormalization and work function tuning in MoSe2/hBN/Ru(0001) heterostructures
• Bright and dark singlet excitons via linear and two-photon spectroscopy in monolayer transition-metal dichalcogenides
• Creation of moiré bands in a monolayer semiconductor by spatially periodic dielectric screening
• Valley Polarization in Size-Tunable Monolayer Semiconductor Quantum Dots
• Double resonant Raman scattering and valley coherence generation in monolayer WSe2
• 2D condensate of electrons and holes in ultrathin MoTe${}_2$ photocells
• Room temperature observation of biexcitons in exfoliated WS2 monolayers
• Electronic bandgap and exciton binding energy of layered semiconductor TiS3
• Intrinsic Lifetime of Higher Excitonic States in Tungsten Diselenide Monolayers
• Interface Dipole and Band Bending in Hybrid p-n Heterojunction MoS2/GaN(0001)
• Direct versus indirect band gap emission and exciton-exciton annihilation in atomically thin molybdenum ditelluride (MoTe${}_2$)
• Probing Many-Body Interactions in Monolayer Transition-Metal Dichalcogenides
• Magneto-photoluminescence of exciton Rydberg states in monolayer WSe${}_2$
• Excitons and trions in monolayer transition metal dichalcogenides: A comparative study between the multiband model and the quadratic single-band model
• Exciton states in monolayer MoSe2 and MoTe2 probed by upconversion spectroscopy
• Excitonic Stark effect in MoS${}_2$ monolayers
• Two-dimensional Materials with Giant Optical Nonlinearities Near the Theoretical Upper Limit
• Marrying excitons and plasmons in monolayer transition-metal dichalcogenides
• Dynamical screening in monolayer transition-metal dichalcogenides and its manifestations in the exciton spectrum
• Moiré structure of MoS${}_2$ on Au(111): Local structural and electronic properties
• Local Spectroscopic Characterization of Spin and Layer Polarization in WSe${}_2$
• Polarons in two-dimensional atomic crystals
• Observation of intervalley quantum interference in epitaxial monolayer WSe2
• Light-Matter Interactions in Two-Dimensional Transition Metal Dichalcogenides: Dominant Excitonic Transitions in mono- and few-layer MoX${}_2$ and Band Nesting
• Influence of the effective layer thickness on the groundstate and excitonic properties of transition-metal dichalcogenide systems
• Weakly Trapped, Charged, and Free Excitons in Single-Layer MoS2 in the Presence of Defects, Strain, and Charged Impurities
• Exciton dynamics in WSe2 bilayers
• Excitonic effects in the optical properties of 2D materials: An equation of motion approach
• Strong light-matter interactions between gap plasmons and two-dimensional excitons at ambient condition in a deterministic way
• Long valley lifetime of free carriers in monolayer WSe2
• Phonon-assisted oscillatory exciton dynamics in monolayer MoSe2
• Nonreciprocal metamaterial obeying time-reversal symmetry
• Integrated Single Photon Emitters
• Excitonic structure of the optical conductivity in MoS${}_2$ monolayers
• Valley-dependent Exciton Fine Structure and Autler-Townes Doublets from Berry Phases in Monolayer Molybdenum Diselenide
• Direct observation of minibands in twisted heterobilayers
• Dependence of the hBN Layer Thickness on the Band Structure and Exciton Properties of Encapsulated WSe2 Monolayers
• Cross-over from trion-hole to exciton-polaron in n-doped semiconductor quantum wells
• Excitonic effects in two-dimensional semiconductors: Path integral Monte Carlo approach
• Excitons, trions, and biexcitons in transition metal dichalcogenides: magnetic field dependence
• Stark shift of excitons and trions in two-dimensional materials
• Observation of forbidden phonons and dark excitons by resonance Raman scattering in few-layer WS${}_2$
• Absence of a Band Gap at Interface of a Metal and Highly Doped Monolayer $Mo{S}_2$
• Monolayer MoSe2: A candidate for room temperature polaritonics
• Band filling and cross quantum capacitance in ion gated semiconducting transition metal dichalcogenide monolayers
• Lateral heterostructures formed by thermally converting n-type SnSe2 to p-type SnSe
• Exciton-exciton interaction beyond the hydrogenic picture in a MoSe${}_2$ monolayer in the strong light-matter coupling regime
• Prospects and limitations of transition-metal dichalcogenide laser gain materials
• Accelerating $GW$-Based Energy Level Alignment Calculations for Molecule-Metal Interfaces Using a Substrate Screening Approach
• Collective Modes in Excitonic Insulators: Effects of Electron-Phonon Coupling and Signatures in Optical Response
• Narrow-band anisotropic electronic structure of ReS${}_2$
• Orbital symmetry and the optical response of single-layer monochalcogenides
• Nonlinear optical selection rules of excitons in monolayer transition metal dichalcogenides
• The interplay between excitons and trions in a monolayer of MoSe${}_2$
• Evidences for the exciton gas phase and its condensation in monolayer 1T-ZrTe2
• Prediction of protected band edge states and dielectric tunable quasiparticle and excitonic properties of monolayer MoSi${}_2$N${}_4$
• Distinctive signatures of the spin- and momentum-forbidden dark exciton states in the photo-luminescences of strained WSe${}_2$ monolayers under thermalization
• Spatially Resolved Electronic Properties of Single-Layer WS${}_2$ on Transition Metal Oxides
• Dielectric Engineering of Electronic Correlations in a van der Waals Heterostructure
• Inverse Funnel Effect of Excitons in Strained Black Phosphorus
• Simple vertex correction improves GW band energies of bulk and two-dimensional crystals
• Many-body effects in nonlinear optical responses of 2D layered semiconductors
• Optical Absorption by Dirac Excitons in Single-Layer Transition-Metal Dichalcogenides
• Direct observation of giant binding energy modulation of exciton complexes in monolayer MoSe${}_2$
• Excitation-induced transition to indirect band gaps in atomically thin transition metal dichalcogenide semiconductors
• Tunneling Spectroscopy of Atomically-Thin Al2O3 Films for Tunnel Junctions
• Enhancing Multifunctionalities of Transition Metal Dichalcogenide Monolayers via Intercalation of Molecules and Ions
• Giant effective Zeeman splitting in a monolayer semiconductor realized by spin-selective strong light-matter coupling
• Valley polarized relaxation and upconversion luminescence from Tamm-Plasmon Trion-Polaritons with a MoSe2 monolayer
• Spinorial formulation of the GW-BSE equations and spin properties of excitons in 2D Transition Metal Dichalcogenides
• Rydberg series of dark excitons and the conduction band spin-orbit splitting in monolayer WSe${}_2$
• Resonant Raman and photoluminescence spectra of suspended molybdenum disulfide
• Exciton Mott transition revisited
• Observation of macroscopic valley-polarized monolayer exciton-polaritons at room temperature
• Opening band gaps of low-dimensional materials at the meta-GGA level of density functional approximations
• Contact-Induced Semiconductor-to-Metal Transition in Single-Layer WS${}_2$
• Strain-induced Giant Second-harmonic Generation in Monolayered $2H$-MoX${}_2$ (X=S,Se,Te)
• Optical orientation with linearly polarized light in transition metal dichalcogenides
• Van der Waals Heterostructures Based on Allotropes of Phosphorene and MoSe2
• Excitonic Resonance Effects and Davydov Splitting in Circularly Polarized Raman Spectra of Few-Layer WSe2
• Origin of layer dependence in band structures of two-dimensional materials
• Microscopic understanding of ultrafast charge transfer in van-der-Waals heterostructures
• Quasiparticle Levels at Large Interface Systems from Many-body Perturbation Theory: the XAF-GW method
• Review of Ultrafast Spectroscopy Studies of Valley Carrier Dynamics in Two Dimensional Semiconducting Transition Metal Dichalcogenides
• Exciton formation assisted by longitudinal optical phonons in monolayer transition metal dichalcogenides
• Ionic Gate Spectroscopy of 2D Semiconductors
• Spin-resolved optical conductivity of two-dimensional group-VIB transition-metal dichalcogenides
• Optical Valley Hall Effect based on Transitional Metal Dichalcogenide cavity polaritons
• Visualizing Orbital Content of Electronic Bands in Anisotropic 2D Semiconducting ReSe${}_2$
• Dominating Interlayer Resonant Energy Transfer in Type-II 2D Heterostructure
• Highly Sensitive, Fast Graphene Photodetector with Responsivity $>10^6$ A/W Using Floating Quantum Well Gate
• Larger than 80% Valley Polarization of Free Carriers in Singly-Oriented Single Layer WS${}_2$ on Au(111)
• Mechanism of antisymmetric spin polarization in centrosymmetric multiple-$Q$ magnets based on bilinear and biquadratic spin cross products
• Quasiparticle band structures of bulk and few-layer PdSe2 from first-principles GW calculations
• Nanoscale patterning of quasiparticle band alignment
• Terahertz Excitonics in Carbon Nanotubes: Exciton Autoionization and Multiplication
• Poor electronic screening in lightly doped Mott insulators observed with scanning tunneling microscopy
• Tip-induced excitonic luminescence nanoscopy of an atomically-resolved van der Waals heterostructure
• Optical identification using imperfections in 2D materials
• Electrical control of inter-layer excitons in van der Waals heterostructures
• Epitaxial single layer NbS${}_2$ on Au(111): synthesis, structure, and electronic properties
• Tutorial: Exciton resonances for atomically-thin optics
• Optical selection rules for excitonic Rydberg series in the massive Dirac cones of hexagonal 2D materials
• Spectrally narrow exciton luminescence from monolayer MoS2 exfoliated onto epitaxially grown hexagonal BN
• Valley-Polarized Exciton Dynamics in Exfoliated Monolayer WSe${}_2$
• Semiconducting van der Waals Interfaces as Artificial Semiconductors
• Electrostatics of electron-hole interactions in van der Waals heterostructures
• Nonconventional screening of Coulomb interaction in two-dimensional semiconductors and metals: A comprehensive cRPA study of MX2 (M=Mo, W, Nb, Ta; X=S, Se, Te)
• Bound hole states associated to individual vanadium atoms incorporated into monolayer WSe${}_2$
• Large-gap insulating dimer ground state in monolayer IrTe2
• Exciton-Driven Renormalization of Quasiparticle Band Structure in Monolayer MoS2
• Dark-exciton based strain sensing in transition metal dichalcogenides
• Enhanced Excitation and Emission from 2D Transition Metal Dichalcogenides with All-Dielectric Nanoantennas
• Coulomb-Engineered Heterojunctions and Dynamical Screening in Transition Metal Dichalcogenide Monolayers
• Growth and Thermo-driven Crystalline Phase Transition of Metastable Monolayer 1T'-WSe2 Thin Film
• Substrate influence on transition metal dichalcogenide monolayer exciton absorption linewidth broadening
• Strong Single- and Two-Photon Luminescence Enhancement by Nonradiative Energy Transfer across Layered Heterostructure
• Spin- and valley- coupled electronic states in monolayer WSe2 on bilayer graphene
• Large bulk photovoltaic effect and second-harmonic generation in few-layer pentagonal semiconductors PdS${}_2$ and PdSe${}_2$
• Quasiparticle energy bands and Fermi surfaces of monolayer NbSe${}_2$
• Engineering photonic environments for two-dimensional materials
• Population pulsation resonances of excitons in monolayer MoSe2 with sub 1 μeV linewidth
• A Theory for Colors of Strongly Correlated Electronic Systems
• Strong bulk photovoltaic effect and second-harmonic generation in two-dimensional selenium and tellurium
• Band nesting and exciton spectrum in monolayer MoS${}_2$
• van der Waals heterostructure for photocatalysis: Graphitic carbon nitride and Janus transition-metal dichalcogenides
• Electronic Structure of Exfoliated Millimeter-Sized Monolayer WSe2 on Silicon Wafer
• Exciton in phosphorene: Strain, impurity, thickness and heterostructure
• Narrow photoluminescence peak of epitaxial MoS${}_2$ on graphene/Ir(111)
• Quasiparticle $GW$ band structures and Fermi surfaces of bulk and monolayer NbS${}_2$
• From Linear to Nonlinear Responses of Thermal Pure Quantum States
• Giant excitonic effects in bulk vacancy-ordered double perovskites
• Exciton-phonon relaxation bottleneck and radiative decay of thermal exciton reservoir in two-dimensional materials
• Quasiparticle band-gap renormalization in doped monolayer MoS${}_2$
• Electric Field Tuning of Band Offsets in Transition Metal Dichalcogenides
• Giant modulation of the electronic band gap of carbon nanotubes by dielectric screening
• Charged exciton kinetics in monolayer MoSe${}_2$ near ferroelectric domain walls in periodically poled LiNbO${}_3$
• Tunable optical nonlinearity for TMD polaritons dressed by a Fermi sea
• Evidence of itinerant holes for long-range magnetic order in tungsten diselenide semiconductor with vanadium dopants
• Twist-dependent intra- and interlayer excitons in moire MoSe2 homobilayers
• Photonic Architectures for Equilibrium High-Temperature Bose-Einstein Condensation in Dichalcogenide Monolayers
• Enhancing charge-density-wave order in 1T-TiSe2 nanosheet by encapsulation with hexagonal Boron Nitride
• Electrically pumped WSe${}_2$-based light-emitting van der Waals heterostructures embedded in monolithic dielectric microcavities
• Anomalous Non-Hydrogenic Exciton Series in 2D Materials on High-$\kappa$ Dielectric Substrates
• Inter-layer charge transport controlled by exciton-trion coherent coupling
• Breakdown of the static dielectric screening approximation of Coulomb interactions in atomically thin semiconductors
• Observation of ~100% valley-coherent excitons in monolayer MoS2 through giant enhancement of valley coherence time
• First principles coupled cluster theory of the electronic spectrum of the transition metal dichalcogenides
• Possible phason-polaron effect on purely one dimensional charge order of Mo6Se6 nanowires
• Tuning the Optical Properties of an MoSe${}_2$ Monolayer Using Nanoscale Plasmonic Antennas
• Observation of room temperature excitons in an atomically thin topological insulator
• Generalized scaling law for exciton binding energy in two-dimensional materials
• Quasiparticle electronic structure of phthalocyanine:TMD interfaces from first-principles $GW$
• Exciton routing in the heterostructure of TMD and paraelectrics
• Decomposition and embedding in the stochastic $GW$ self-energy
• Tuning hydrogen adsorption on graphene by gate voltage
• Phonon-assisted processes in the ultraviolet transient optical response of graphene
• Evidence of Ferroelectricity in an Antiferromagnetic Vanadium Trichloride Monolayer
• Nontrivial doping evolution of electronic properties in Ising-superconducting alloys
• Optical Properties of GaS-Ca(OH)${}_2$ bilayer heterostructure
• Tunable magneto-optical properties in MoS${}_2$ via defect-induced exciton transitions
• Ultrafast exciton relaxation in monolayer transition metal dichalcogenides
• Resonantly excited exciton dynamics in two-dimensional MoSe${}_2$ monolayers
• Substrate interference and strain in the second harmonic generation from MoSe${}_2$ monolayers
• Trion photoluminescence and trion stability in atomically thin semiconductors
• Metal-insulator transition in monolayer MoS${}_2$ via contactless chemical doping
• Microscopic modelling of exciton-polariton diffusion coefficients in atomically thin semiconductors
• Interplay of Excitonic Complexes in $p$-Doped WSe${}_2$ Monolayers
• Simulations of Trions and Biexcitons in Layered Hybrid Organic-Inorganic Lead Halide Perovskites
• Improving the applicability of the Pauli kinetic energy density based semilocal functional for solids
• Quasiparticle and Optical Properties of Carrier-Doped Monolayer MoTe${}_2$ from First Principles
• Explaining Observed Stability of Excitons in Highly Excited CdSe Nanoplatelets
• Radially polarized light beams from spin-forbidden dark excitons and trions in monolayer WSe${}_2$
• Ultra-compact photodetection in atomically thin MoSe${}_2$
• Microscopic theory of exciton and trion polaritons in doped monolayers of transition metal dichalcogenides
• Benchmarking exchange-correlation potentials with the mstar60 dataset: Importance of the nonlocal exchange potential for effective mass calculations in semiconductors
• Solving the Bethe-Salpeter Equation on a Subspace: Approximations and Consequences for Low-dimensional Materials
• Photodetection in p-n junctions formed by electrolyte-gated transistors of two-dimensional crystals
• Exotic dielectric behaviors induced by pseudo-spin texture in magnetic twisted bilayer
• Probing biexciton in monolayer WS${}_2$ through controlled many-body interaction
• Impacts of dielectric screening on the luminescence of monolayer WSe${}_2$
• Many-body dynamics and gap opening in interacting periodically driven systems
• Band Gap Opening in Bilayer Graphene-CrCl${}_3$/CrBr${}_3$/CrI${}_3$ van der Waals Interfaces
• Probabilistic forecast of nonlinear dynamical systems with uncertainty quantification
• Annihilation mechanism of excitons in a MoS2 monolayer through direct Förster-type energy transfer and multistep diffusion
• Terahertz fingerprint of monolayer Wigner crystals
• Photophysical comparison of liquid and mechanically exfoliated WS${}_2$ monolayers
• Non-invasive control of excitons in two-dimensional materials
• Tunable properties of excitons in double monolayer semiconductor heterostructures
• High-throughput computational characterization of two-dimensional compositionally complex transition-metal chalcogenide alloys
• Ultrafast charge transfer and vibronic coupling in a laser-excited hybrid inorganic/organic interface
• Tightly bound excitons in two-dimensional semiconductors with a flat valence band
• Effect of dynamical screening in the Bethe-Salpeter framework: Excitons in crystalline naphthalene
• Screening 0D materials for 2D nanoelectronics applications
• Substrate Effect on Excitonic Shift and Radiative Lifetime of Two-Dimensional Materials
• Valley Depolarization in Monolayer Transition-Metal Dichalcogenides with Zone-Corner Acoustic Phonons
• Ultrafast creation of a light induced semimetallic state in strongly excited 1T-TiSe${}_2$
• Excited-State Trions in Two Dimensional Materials
• Computing Optical Properties of Ultra-thin Crystals
• Torsional strain engineering of transition metal dichalcogenide nanotubes: An ab initio study
• Prevalence of oxygen defects in an in-plane anisotropic transition metal dichalcogenide
• Computational methods for 2D materials modelling
• Extremely imbalanced two-dimensional electron-hole-photon systems
• Chiral excitonics in monolayer semiconductors on patterned dielectric
• Confined monolayer Ag as a large gap 2D semiconductor and its momentum resolved excited states
• Dielectric screening at TMD:hBN interfaces: Monolayer-to-bulk transition, local-field effect, and spatial dependence
• Nano-optical investigation of grain boundaries, strain and edges in CVD grown MoS${}_2$ monolayers
• A comprehensive study of complex non-adiabatic exciton dynamics in MoSi${}_2$N${}_4$
• Spin-dependent Tunneling Barriers in CoPc/VSe2 from Many-Body Interactions
• Observation of Dynamic Screening in the Excited Exciton States in Multi-layered MoS${}_2$
• Exciton diffusion in a hBN-encapsulated monolayer MoSe2
• Decoupling Molybdenum Disulfide from its Substrate by Cesium Intercalation
• Excitonic magneto-optics in monolayer transition metal dichalcogenides: From nanoribbons to two-dimensional response
• Dark-state impact on the exciton recombination of WS2 monolayers as revealed by multi-time-scale pump-and-probe spectroscopy
• Dielectric embedding GW for weakly coupled molecule-metal interfaces
• Trion clustering structure and binding energy in 2D semiconductor materials: Faddeev equations approach
• Vibrational and dielectric properties of monolayer transition metal dichalcogenides
• Van der Waals solid phase epitaxy to grow large-area manganese-doped MoSe${}_2$ few-layers on SiO${}_2$/Si
• Growth of Thin Oxidation-Resistive Crystalline Si Nanostructures on Graphene
• The Exact Exchange-Correlation Potential in Time-Dependent Density Functional Theory: Choreographing Electrons with Steps and Peaks
• Interlayer excitonic spectra of vertically stacked MoSe${}_2$/WSe${}_2$ heterobilayers
• Magneto photoluminescence measurements of tungsten disulphide monolayers
• Two-dimensional excitons in monolayer transition metal dichalcogenides from simple models and variational calculations
• Proximity induced spin-orbit splitting in graphene nanoribbons on transition metal dichalcogenides
• Reliable and Broad-range Layer Identification of Au-assisted Exfoliated Large Area MoS${}_2$ and WS${}_2$ Using Reflection Spectroscopic Fingerprints
• Valley Coherent Hot Carriers and Thermal Relaxation in Monolayer Transition Metal Dichalcogenides
• Nano-optics of transition metal dichalcogenides and their van der Waals heterostructures with electron spectroscopies
• Single-crystal graphene on Ir(110)
• Impact of substrates and quantum effects on exciton line shapes of 2D semiconductors at room temperature
• A Hybrid-DFT Study of Intrinsic Point Defects in $M{X}_2$ ($M$=Mo, W; $X$=S, Se) Monolayers
• Exciton dissociation in two-dimensional transition metal dichalcogenides: Excited states and substrate effects
• Spatial control of carrier capture in two-dimensional materials: Beyond energy selection rules
• Valley-dependent Lorentz force and Aharonov-Bohm phase in strained graphene p-n junction
• Giant gate-tunable renormalization of spin-correlated flat-band states and bandgap in a 2D magnetic insulator
• Nearly-free-electron system of monolayer Na on the surface of single-crystal HfSe${}_2$
• Triangular lattice exciton model
• Signatures of dark excitons in exciton-polariton optics of transition metal dichalcogenides
• Elastic properties of Janus transition metal dichalcogenide nanotubes from first principles
• The deep-acceptor nature of the chalcogen vacancies in 2D transition-metal dichalcogenides
• Substrate screening approach for quasiparticle energies of two-dimensional interfaces with lattice mismatch
• A polarizing situation: Taking an in-plane perspective for next-generation near-field studies
• Isolating the Nonlinear Optical Response of a MoS${}_2$ Monolayer under Extreme Screening of a Metal Substrate
• First-principles calculations of electrical conductivities of edge-modified graphene nanoribbons: strain effect
• Magnetically tunable exciton valley coherence in monolayer WS${}_2$ mediated by the electron-hole exchange and exciton-phonon interactions
• Defects, band bending and ionization rings in MoS2
• Trion formation resolves observed peak shifts in the optical spectra of transition metal dichalcogenides
• Quantum many-body simulation using monolayer exciton-polaritons in coupled-cavities
• Phonon screening of excitons in atomically thin semiconductors
• Unveiling the multi-level structure of midgap states in Sb-doped MoX${}_2$ (X = S, Se, Te) monolayers
• Valley-contrasting interband transitions and excitons in symmetrically biased dice model
• Coulomb effects in the absorbance spectra of two-dimensional Dirac materials
• Interlayer and intralayer excitons in AlN/WS${}_2$ heterostructure
• Imaging Seebeck drift of excitons and trions in MoSe2 monolayers
• Phonons of electronic crystals in two-dimensional semiconductor moiré patterns
• Spin Response and Collective Modes in Simple Metal Dichalcogenides
• Layer-dependent Quasiparticle Electronic Structure of the P3HT:PCBM Interface from A First-Principles Substrate Screening $GW$ Approach
• Controlling relaxation dynamics of excitonic states in monolayer transition metal dichalcogenides WS2 through interface engineering
• The Importance of Pure Dephasing in the Optical Response of Excitons in High-quality van der Waals Heterostructures
• Waveguiding valley excitons in monolayer transition metal dicalcogenides by dielectric interfaces in the substrate
• Modelling excitonic Mott transitions in two-dimensional semiconductors
• Thermal effect on magnetoexciton energy spectra in monolayer transition metal dichalcogenides
• Controlling Mixed Mo/MoS${}_2$ Domains on Si by Molecular Beam Epitaxy for the Hydrogen Evolution Reaction
• Coupled exciton internal and center-of-mass motions in two-dimensional semiconductors by a periodic electrostatic potential
• Many-body correlations brought to light in absorption spectra of diluted magnetic semiconductors
• Predicting the Energetic Stabilization of Janus-MoSSe/AlN Heterostructures: A DFT Study
• Femtosecond currents in transition metal dichalcogenides monolayers
• k-resolved ultrafast light-induced band renormalization in monolayer WS${}_2$ on graphene
• Persistence of charge ordering instability to Coulomb engineering in the excitonic insulator candidate TiSe${}_2$
• Twistronics and moiré superlattice physics in 2D transition metal dichalcogenides
• Rich diversity of crystallographic phase formation in 2D Rex:Mo1-xS2 (x< 0.5) alloy
• Brightening odd-parity excitons in transition-metal dichalcogenides: Rashba spin-orbit interaction, skyrmions, and cavity polaritons
• Origin of selective enhancement of sharp defect emission lines in monolayer WSe${}_2$ on rough metal substrate
• Solving the Bethe-Salpeter equation on massively parallel architectures
• First-principles computational methods for quantum defects in two-dimensional materials: A perspective
• Phase transitions of polariton condensate in 2D Dirac materials
• Quasiparticle gap renormalization driven by internal and external screening in a WS${}_2$ device
• Interlayer Fermi polarons of excited exciton states in quantizing magnetic fields
• Alloying 2D VSe2 with Pt: from a charge density wave state to a disordered insulator
• Optical properties of orthorhombic germanium sulfide: Unveiling the Anisotropic Nature of Wannier Exciton
• Moiré induced electronic structure modifications in monolayer V${}_2$S${}_3$ on Au(111)
• Quasiparticle Electronic Structure of Two-Dimensional Heterotriangulene-Based Covalent Organic Frameworks Adsorbed on Au(111)
• Dichotomy of saddle points in energy bands of a monolayer NbSe${}_2$
• Robust Coulomb Gap and Varied-temperature Study of Epitaxial 1T'-WSe${}_2$ Monolayers
• Room-Temperature Quantum-Confined Stark Effect in Atomically Thin Semiconductor
• Electron-Doping Induced Semiconductor to Metal Transitions in ZrSe2 Layers via Copper Atomic Intercalation
• Symmetry-breaking and spin-blockage effects on carrier dynamics in single-layer tungsten diselenide
• Robustness of momentum-indirect interlayer excitons in MoS2/WSe2 heterostructure against charge carrier doping
• Motion of 2D exciton in momentum space leads to pseudospin distribution narrowing on the Bloch Sphere
• Low-Temperature Annihilation Rate for Quasi-Localized Excitons in Monolayer MoS2
• Spin dynamics of hot excitons in diluted magnetic semiconductors with spin-orbit interaction
• Strain-induced exciton decomposition and anisotropic lifetime modulation in a GaAs micromechanical resonator
• Valley-dependent emission patterns enabled by plasmonic nanoantennas
• Signatures of valley drift in the diversified band dispersions of bright, gray, and dark excitons in MoS2 monolayers under uni-axial strains
• Dimensionality-suppressed chemical doping in 2D semiconductors: the cases of phosphorene, MoS2, and ReS2 from first-principles
• Correspondence between quasiparticle dissipation and quantum information decay in open quantum systems
• Macroscopic electro-optical modulation of solution-processed molybdenum disulfide
• Retrieval of fundamental material parameters of monolayer transition metal dichalcogenides from experimental exciton energies: An analytical approach
• Designable exciton mixing through layer alignment in WS${}_2$-graphene heterostructures
• Microring Resonators Coupling Tunability by Heterogeneous 2D Material Integration
• Ultrafast Terahertz Probe of Transient Evolution of Charged and Neutral Phase of Photoexcited Electron-hole Gas in Monolayer Semiconductor
• Direct observation of internal quantum transitions and femtosecond radiative decay of excitons in monolayer WSe_2
• Role of excited states in the dynamics of excitons and their spins in diluted magnetic semiconductors
• Coulomb potential screening via charged carriers and charge-neutral dipoles/excitons in two-dimensional case
• Variational and field-theoretical approach to exciton-exciton interactions and biexcitons in semiconductors
• Renormalization of the optical band gap through an effective Thirring interaction for massive Dirac-like electrons
• Ferroelectric Control of Interlayer Excitons in 3R-MoS${}_2$ / MoSe${}_2$ Heterostructures
• Substrate pre-sputtering for layer-by-layer van der Waals epitaxy of 2D materials
• Substrate Induced Optical Anisotropy in Monolayer MoS${}_2$
• Gate-modulated reflectance spectroscopy for detecting excitonic species in two-dimensional semiconductors
• Nano-optical imaging of monolayer MoSe2-WSe2 lateral heterostructure
• Observation of the Interlayer Exciton Gases in WSe${}_2$ -p: WSe${}_2$ Heterostructures
• Valley-Selective Response of Nanoantennas Coupled to 2D Transition Metal Dichalcogenides
• Emergent exotic chirality dependent dielectricity in magnetic twisted bilayer system
• Momentum resolved ground/excited states and the ultra-fast excited state dynamics of monolayer MoS2
• Deciphering the Intense Post-Gap Absorptions of Monolayer Transition Metal Dichalcogenides
• Steady-state nonlinear optical response of excitons in monolayer MoSe${}_2$
• Experimental valley qubit state tomography and coherence induced uncertainty relations in monolayer WSe${}_2$
• Bandgap closing at the screw dislocations of WS2 spirals
• Loss and Coupling Tuning via Heterogeneous Integration of MoS2 Layers in Silicon Photonics
• Ab initio Approach to Collective Excitations in Excitonic Insulators
• Room-temperature tuning and probing of Fermi polarons in atomically thin semiconductors on a plasmonic metasurface
• Subnanometric control of coupling between WS${}_2$ monolayers with a molecular spacer
• Low-dimensional quantum systems