Optical Estimation of the Carrier Concentration and the Value of Strain in Monolayer Graphene Grown on 4H-SiC
- 作者: Eliseyev I.1, Davydov V.1, Smirnov A.1, Nestoklon M.1, Dementev P.1, Lebedev S.1, Lebedev A.1, Zubov A.2, Mathew S.3,4, Pezoldt J.3, Bokai K.5, Usachov D.5
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隶属关系:
- Ioffe Institute
- ITMO University
- Technische Universität Ilmenau
- Friedrich-Schiller-Universität Jena
- Saint-Petersburg State University
- 期: 卷 53, 编号 14 (2019)
- 页面: 1904-1909
- 栏目: Nanostructures Characterization
- URL: https://journals.rcsi.science/1063-7826/article/view/207513
- DOI: https://doi.org/10.1134/S1063782619140057
- ID: 207513
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详细
Systematic studies of the effect of the electron concentration on the Raman spectra of single-layer graphene films have been carried out. The samples were grown by thermal destruction of the Si-face of the 4H-SiC substrate. Analysis of the results led us to the conclusion that for the correct estimation of the electron concentration and strain values in graphene using Raman spectroscopy data it is necessary to take into account the value of the Fermi velocity in the graphene layer. This conclusion is valid for graphene on any other substrate as well, since the Fermi velocity in graphene depends on the dielectric constant of the substrate.
作者简介
I. Eliseyev
Ioffe Institute
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Email: zoid95@yandex.ru
俄罗斯联邦, St. Petersburg, 194021
V. Davydov
Ioffe Institute
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Email: valery.davydov@mail.ioffe.ru
俄罗斯联邦, St. Petersburg, 194021
A. Smirnov
Ioffe Institute
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Email: alex.smirnov@mail.ioffe.ru
俄罗斯联邦, St. Petersburg, 194021
M. Nestoklon
Ioffe Institute
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Email: nestoklon.coherent@mail.ioffe.ru
俄罗斯联邦, St. Petersburg, 194021
P. Dementev
Ioffe Institute
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Email: demenp@yandex.ru
俄罗斯联邦, St. Petersburg, 194021
S. Lebedev
Ioffe Institute
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Email: lebedev.sergey@mail.ioffe.ru
俄罗斯联邦, St. Petersburg, 194021
A. Lebedev
Ioffe Institute
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Email: shura.lebe@mail.ioffe.ru
俄罗斯联邦, St. Petersburg, 194021
A. Zubov
ITMO University
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Email: alexander.zubov@nitride-crystals.com
俄罗斯联邦, St. Petersburg, 197101
S. Mathew
Technische Universität Ilmenau; Friedrich-Schiller-Universität Jena
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Email: smerumpan@gmail.com
德国, Ilmenau, 98693; Jena, 07745
J. Pezoldt
Technische Universität Ilmenau
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Email: joerg.pezoldt@tu-ilmenau.de
德国, Ilmenau, 98693
K. Bokai
Saint-Petersburg State University
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Email: bokai.kirill@gmail.com
俄罗斯联邦, St. Petersburg, 199034
D. Usachov
Saint-Petersburg State University
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Email: usachov.d@gmail.com
俄罗斯联邦, St. Petersburg, 199034