Hot Carrier Chemistry
نویسندگان
چکیده
منابع مشابه
Materials for hot carrier plasmonics
While the field of plasmonics has grown significantly in recent years, the relatively high losses and limited material choices have remained a challenge for the development of many device concepts. The decay of plasmons into hot carrier excitations is one of the main loss mechanisms; however, this process offers an opportunity for the direct utilization of loss if excited carriers can be collec...
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We report an optical study of charge transport in graphene. Diffusion of hot carriers in epitaxial graphene and reduced graphene-oxide samples are studied using an ultrafast pump-probe technique with a high spatial resolution. Spatiotemporal dynamics of hot carriers after a pointlike excitation are monitored. Carrier-diffusion coefficients of 11 000 and 5500 cm2 s−1 are measured in epitaxial gr...
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We report on the intrinsic optoelectronic response of high-quality dual-gated monolayer and bilayer graphene p-n junction devices. Local laser excitation (of wavelength 850 nanometers) at the p-n interface leads to striking six-fold photovoltage patterns as a function of bottom- and top-gate voltages. These patterns, together with the measured spatial and density dependence of the photoresponse...
متن کاملTechnology Mapping for Hot-Carrier Reliability Enhancement
As semiconductor devices enter the deep sub-micron era, reliability has become a major issue and challenge in VLSI design. Among all the failure mechanisms, hot-carrier eeect is one of those which have the most signiicant impact on the long-term reliability of high-density VLSI circuits. In this paper, we address the problem of minimizing hot-carrier eeect during the technology mapping stage of...
متن کاملHot Carrier Extraction with Plasmonic Broadband Absorbers.
Hot charge carrier extraction from metallic nanostructures is a very promising approach for applications in photocatalysis, photovoltaics, and photodetection. One limitation is that many metallic nanostructures support a single plasmon resonance thus restricting the light-to-charge-carrier activity to a spectral band. Here we demonstrate that a monolayer of plasmonic nanoparticles can be assemb...
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ژورنال
عنوان ژورنال: ChemNanoMat
سال: 2019
ISSN: 2199-692X,2199-692X
DOI: 10.1002/cnma.201900409