Electron Energy Loss Spectroscopy of Hot Electron Transport between Gold Nanoantennas and Molybdenum Disulfide by Plasmon Excitation
Source abstract
Abstract
Hot electron transport from single gold nanoantennas to underlying monolayer molybdenum disulfide (MoS2) is examined using electron energy loss spectroscopy (EELS). EELS allows nanometer‐scale resolution and avoids confounding effects of optical excitation. Experimental EELS measures of plasmon bandwidth in the presence and absence of MoS2 are compared with calculated bandwidth contributions from radiative, nonradiative, and interfacial damping. Transport of plasmon hot electrons from 80 nm gold nanospheres to underlying MoS2 is estimated. A 6 ± 1% hot electron transport quantum efficiency is inferred from a measured 0.08 eV increase in plasmon damping in the presence of MoS2. Hot electron transport can contribute to reported enhancements in catalysis and photodetection of MoS2 decorated with gold nanoantennas. Improved understanding of resonant electric interactions between noble metal nanoantennas and transition metal dichalcogenides can benefit emerging optoelectronics.
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Research context
OpenAlex topics: 2D Materials and Applications · Gold and Silver Nanoparticles Synthesis and Applications · Quantum Dots Synthesis And Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
MicroElectronics‐Photonics Program University of Arkansas Fayetteville AR 72701 USA
Institute for Nanoscience and Engineering University of Arkansas Fayetteville AR 72701 USA
Ralph E. Martin Department of Chemical Engineering University of Arkansas Fayetteville AR 72701 USA
Funding
National Science Foundation
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