Nature Photonics, Published online: 30 September 2019; doi:10.1038/s41566-019-0524-1Unusual photoemission from graphene is explained by the emission of hot electrons. The findings may lead to integrated photonic devices driven by hot-electron emission.
Published in: "Nature Photonics".
Nature Photonics, Published online: 02 September 2019; doi:10.1038/s41566-019-0510-7Using graphene as the ‘metal’ layer can increase the localization accuracy of metal-induced energy transfer, enabling axial localization of single emitters and measurement of the thickness of lipid bilayers with ångström accuracy.
Published in: "Nature Photonics".
Nature Photonics, Published online: 12 August 2019; doi:10.1038/s41566-019-0492-5A hybrid material based on uniform graphene on both the outer surface and inner hole walls of a photonic crystal fibre offers a strong, tunable light–matter interaction and good broadband electro-optic modulation performance under low gate voltage.
Published in: "Nature Photonics".
Nature Photonics, Published online: 20 May 2019; doi:10.1038/s41566-019-0428-0Transduction of valley information to mechanical states in a monolayer MoS2 resonator can be realized by optically pumping the valley carriers and applying an out-of-plane magnetic field gradient to induce a displacement-dependent valley splitting.
Published in: "Nature Photonics".
Coherent steering of nonlinear chiral valley photons with a synthetic Au–WS2 metasurfaceCoherent steering of nonlinear chiral valley photons with a synthetic Au–WS<sub>2</sub> metasurface, Published online: 01 April 2019; doi:10.1038/s41566-019-0399-1By entangling the phase and spin of light, a synthetic metasurface is shown to be able to coherently manipulate the valley-exciton-locked chiral emission in monolayer tungsten disulfide at room temperature. The findings will be of benefit to advanced room-temperature and free-space nonlinear, quantum and valleytronic nanodevices.
Published in: "Nature Photonics".
Graphene–semiconductor heterojunction sheds light on emerging photovoltaicsGraphene–semiconductor heterojunction sheds light on emerging photovoltaics, Published online: 20 March 2019; doi:10.1038/s41566-019-0391-9Graphene-on-bulk semiconductors may enable new directions for ultrathin optoelectronics and photovoltaics.
Published in: "Nature Photonics".
A 90-nm-thick graphene metamaterial for strong and extremely broadband absorption of unpolarized lightA 90-nm-thick graphene metamaterial for strong and extremely broadband absorption of unpolarized light, Published online: 18 March 2019; doi:10.1038/s41566-019-0389-3Eighty-five per cent absorptivity of unpolarized light over the wavelength range 300–2,500 nm is realized in a 90-nm-thick, 12.5 cm2 metamaterial.
Published in: "Nature Photonics".
Anisotropic structural dynamics of monolayer crystals revealed by femtosecond surface X-ray scatteringAnisotropic structural dynamics of monolayer crystals revealed by femtosecond surface X-ray scattering, Published online: 11 March 2019; doi:10.1038/s41566-019-0387-5Electron–phonon coupling in a monolayer WSe2 on a substrate is investigated by femtosecond surface X-ray scattering. Counterintuitively, the absorbed optical photon energy is dominantly coupled to the in-plane lattice vibrations within 1 ps.
Published in: "Nature Photonics".
Electron–hole liquid in a van der Waals heterostructure photocell at room temperatureElectron–hole liquid in a van der Waals heterostructure photocell at room temperature, Published online: 04 February 2019; doi:10.1038/s41566-019-0349-yPhotoexcited charge carriers are typically approximated as a gas, but now it is shown that electrons and holes can behave as a liquid in MoTe2 photocells.
Published in: "Nature Photonics".
Polarization switching and electrical control of interlayer excitons in two-dimensional van der Waals heterostructuresPolarization switching and electrical control of interlayer excitons in two-dimensional van der Waals heterostructures, Published online: 31 December 2018; doi:10.1038/s41566-018-0325-yA device capable of inverting the polarization of light by efficient control of interlayer excitons in a van der Waals heterostructure is demonstrated, representing an important step towards implementing logic operations in valleytronics.
Published in: "Nature Photonics".
Accurate characterization of next-generation thin-film photodetectorsAccurate characterization of next-generation thin-film photodetectors, Published online: 14 December 2018; doi:10.1038/s41566-018-0288-zThe performance of photodetectors fabricated from emerging semiconductors such as perovskites, quantum dots, two-dimensional materials or organics, for example, can be prone to misinterpretation. This Comment exposes the problems and proposes some guidelines for accurate characterization.
Published in: "Nature Photonics".
Author Correction: Gate-tunable third-order nonlinear optical response of massless Dirac fermions in grapheneAuthor Correction: Gate-tunable third-order nonlinear optical response of massless Dirac fermions in graphene, Published online: 07 September 2018; doi:10.1038/s41566-018-0258-5Author Correction: Gate-tunable third-order nonlinear optical response of massless Dirac fermions in graphene
Published in: "Nature Photonics".
Polarization-resolved black phosphorus/molybdenum disulfide mid-wave infrared photodiodes with high detectivity at room temperaturePolarization-resolved black phosphorus/molybdenum disulfide mid-wave infrared photodiodes with high detectivity at room temperature, Published online: 27 August 2018; doi:10.1038/s41566-018-0239-8Black phosphorus/molybdenum disulfide mid-wave infrared photodiodes with external quantum efficiencies of 35% across 2.5–3.5 μm at room temperature and a peak detectivity of 1.1 × 1010 cm Hz1/2 W–1 at 3.8 μm are demonstrated.
Published in: "Nature Photonics".
Light–valley interactions in 2D semiconductorsLight–valley interactions in 2D semiconductors, Published online: 27 July 2018; doi:10.1038/s41566-018-0204-6Valleytronics in single-layer semiconductors is reviewed with an emphasis on controlling the valley degree of freedom with light as well as potential applications.
Published in: "Nature Photonics".
Electrically tuned nonlinearityElectrically tuned nonlinearity, Published online: 28 June 2018; doi:10.1038/s41566-018-0201-9The demonstration of broadband, electrically tunable third-order nonlinear optical responses in graphene is promising for a host of nonlinear optical applications.
Published in: "Nature Photonics".
Control of semiconductor emitter frequency by increasing polariton momentaControl of semiconductor emitter frequency by increasing polariton momenta, Published online: 04 June 2018; doi:10.1038/s41566-018-0176-6While modifications of emission and absorption rates are commonplace in photonics, similar manipulations of emitter transition frequencies are challenging. Here, 2D polaritons in graphene are predicted to enable non-vertical electronic transitions in a quantum well, controlling the transition frequencies by inducing an effective non-locality.
Published in: "Nature Photonics".
Gate-tunable third-order nonlinear optical response of massless Dirac fermions in grapheneGate-tunable third-order nonlinear optical response of massless Dirac fermions in graphene, Published online: 21 May 2018; doi:10.1038/s41566-018-0175-7Third-harmonic generation and four-wave mixing of light can be enhanced in graphene with gate tuning to adjust the doping level. The findings may lead to new graphene-based nonlinear optoelectronic devices.
Published in: "Nature Photonics".
Silicon Mie resonators for highly directional light emission from monolayer MoS2Silicon Mie resonators for highly directional light emission from monolayer MoS<sub>2</sub>, Published online: 23 April 2018; doi:10.1038/s41566-018-0155-yBased on a modified Mie scattering theory, several pathways to achieve control over the directionality, polarization state and spectral emission that rely on a coherent coupling of an emitting dipole in monolayer MoS2 to optical resonances of a silicon nanowire are reported.
Published in: "Nature Photonics".
Terahertz surprisesTerahertz surprises, Published online: 26 February 2018; doi:10.1038/s41566-018-0115-6The observation of terahertz nonlinearities in graphene and quantum wells and the emission of terahertz waves from water show that terahertz science is still a fertile area of research that is full of surprises.
Published in: "Nature Photonics".
Telecom meets terahertzTelecom meets terahertz, Published online: 22 December 2017; doi:10.1038/s41566-017-0073-4Excitation and gate tuning of terahertz plasmons in dual-layer graphene integrated into on-chip telecom photonic waveguides using infrared lasers has now been demonstrated. This may open the door to atomically thick optoelectronic devices for security, tomography or data processing.
Published in: "Nature Photonics".