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Hot Carrier–Assisted Intrinsic Photoresponse in Graphene
Photoexcited electrons in graphene remain thermally excited because they cannot transfer this energy to lattice vibrations. We report on the intrinsic optoelectronic response of high-qualityExpand
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Extremely Efficient Multiple Electron-Hole Pair Generation in Carbon Nanotube Photodiodes
Efficient Carbon Nanotube Photodiodes A single photon absorbed in a single-walled carbon nanotube device can generate multiple unbound particles carrying an electric charge. Gabor et al. (p. 1367)Expand
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Photo-thermoelectric effect at a graphene interface junction.
We investigate the optoelectronic response of a graphene single-bilayer interface junction using photocurrent (PC) microscopy. We measure the polarity and amplitude of the PC while varying the FermiExpand
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Tuning ultrafast electron thermalization pathways in a van der Waals heterostructure
Interlayer transport can be made to occur slower or faster than intralayer scattering in van der Waals heterostructures, allowing the thermalization pathways for optically excited carriers to beExpand
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Trion formation dynamics in monolayer transition metal dichalcogenides
We report charged exciton (trion) formation dynamics in doped monolayer transition metal dichalcogenides, specifically molybdenum diselenide (MoSe2), using resonant two-color pump-probe spectroscopy.Expand
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Terahertz time-domain measurement of ballistic electron resonance in a single-walled carbon nanotube.
Understanding the physics of low-dimensional systems and the operation of next-generation electronics will depend on our ability to measure the electrical properties of nanomaterials at terahertzExpand
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Competing channels for hot-electron cooling in graphene.
We report on temperature-dependent photocurrent measurements of high-quality dual-gated monolayer graphene p-n junction devices. A photothermoelectric effect governs the photocurrent response in ourExpand
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Long-Lived Valley Polarization of Intravalley Trions in Monolayer WSe_{2}.
We investigate valley dynamics associated with trions in monolayer tungsten diselenide (WSe_{2}) using polarization resolved two-color pump-probe spectroscopy. When tuning the pump and probe energyExpand
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Photoresponse of an electrically tunable ambipolar graphene infrared thermocouple.
We explore the photoresponse of an ambipolar graphene infrared thermocouple at photon energies close to or below monolayer graphene's optical phonon energy and electrostatically accessible FermiExpand
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Hot carrier-enhanced interlayer electron-hole pair multiplication in 2D semiconductor heterostructure photocells.
Strong electronic interactions can result in novel particle-antiparticle (electron-hole, e-h) pair generation effects, which may be exploited to enhance the photoresponse of nanoscale optoelectronicExpand
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