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Spectral ellipsometry of monolayer transition metal dichalcogenides: Analysis of excitonic peaks in dispersion

Journal of Vacuum Science and Technology B: Nanotechnology and Microelectronics, ISSN: 2166-2754, Vol: 38, Issue: 1
2020
  • 52
    Citations
  • 0
    Usage
  • 55
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    52
    • Citation Indexes
      52
  • Captures
    55

Article Description

Optical constants of monolayers MoS and WS were measured by spectroscopic ellipsometry in the spectral range 365-1700 nm. Analysis of ellipsometry spectra was carried out, taking into account the excitonic nature of dispersion. In the considered wavelength range, excitons originate from different interband transitions. As a result, they can be described via Tauc-Lorentz oscillators, one for each exciton. The scalability and universality of such an approach could be applied for the extended wavelength range and to the other transition metal dichalcogenides.

Bibliographic Details

Georgy A. Ermolaev; Dmitry I. Yakubovsky; Yury V. Stebunov; Aleksey V. Arsenin; Valentyn S. Volkov

American Vacuum Society

Materials Science; Physics and Astronomy; Chemical Engineering; Engineering

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