Photocurrent as a multiphysics diagnostic of quantum materials
The photoexcitation life cycle from incident photon (and creation of photoexcited electron–
hole pair) to ultimate extraction of electrical current is a complex multiphysics process …
hole pair) to ultimate extraction of electrical current is a complex multiphysics process …
Hot carriers in graphene–fundamentals and applications
Hot charge carriers in graphene exhibit fascinating physical phenomena, whose
understanding has improved greatly over the past decade. They have distinctly different …
understanding has improved greatly over the past decade. They have distinctly different …
High-responsivity graphene photodetectors integrated on silicon microring resonators
Graphene integrated photonics provides several advantages over conventional Si
photonics. Single layer graphene (SLG) enables fast, broadband, and energy-efficient …
photonics. Single layer graphene (SLG) enables fast, broadband, and energy-efficient …
Quantum-critical conductivity of the Dirac fluid in graphene
Graphene near charge neutrality is expected to behave like a quantum-critical, relativistic
plasma—the “Dirac fluid”—in which massless electrons and holes collide at a rapid rate. We …
plasma—the “Dirac fluid”—in which massless electrons and holes collide at a rapid rate. We …
Highly efficient hot electron harvesting from graphene before electron-hole thermalization
Although the unique hot carrier characteristics in graphene suggest a new paradigm for hot
carrier–based energy harvesting, the reported efficiencies with conventional …
carrier–based energy harvesting, the reported efficiencies with conventional …
Observation of hydrodynamic plasmons and energy waves in graphene
Thermally excited electrons and holes form a quantum-critical Dirac fluid in ultraclean
graphene and their electrodynamic responses are described by a universal hydrodynamic …
graphene and their electrodynamic responses are described by a universal hydrodynamic …
Ultrafast hot carrier transfer in WS2/graphene large area heterostructures
Charge transfer processes in two-dimensional van der Waals heterostructures enable
upconversion of low energy photons and efficient charge carriers extraction. Here we use …
upconversion of low energy photons and efficient charge carriers extraction. Here we use …
Ultrafast terahertz self-induced absorption and phase modulation on a graphene-based thin film absorber
Interaction of intense terahertz (THz) waves with graphene based modulation devices holds
great potential for the optoelectronic applications of the future. Here, we present a thin film …
great potential for the optoelectronic applications of the future. Here, we present a thin film …
Plasmon-induced long-lived hot electrons in degenerately doped molybdenum oxides for visible-light-driven photochemical reactions
Plasmon-induced hot electrons offer unique advantages in solar-light-driven chemical
reactions. Noble metal nanostructures have been the most studied plasmonic materials, but …
reactions. Noble metal nanostructures have been the most studied plasmonic materials, but …
Electrically tunable nonlinearity at 3.2 terahertz in single-layer graphene
Graphene is a nonlinear material in the terahertz (THz) frequency range, with χ (3)∼ 10–9
m2/V2∼ 15 orders of magnitude higher than that of other materials used in the THz range …
m2/V2∼ 15 orders of magnitude higher than that of other materials used in the THz range …