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Structural, optical and electrostatic properties of single and fewlayers MoS2: effect of substrate

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Structural, optical and electrostatic properties of single and fewlayers MoS2 : effect of substrate. / Robinson, Benjamin; Giusca, Cristina; Gonzalez, Yurema; Kay, Nicholas; Kazakova, Olga; Kolosov, Oleg.

In: 2D Materials, Vol. 2, No. 1, 015005, 20.02.2015.

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Robinson, Benjamin ; Giusca, Cristina ; Gonzalez, Yurema ; Kay, Nicholas ; Kazakova, Olga ; Kolosov, Oleg. / Structural, optical and electrostatic properties of single and fewlayers MoS2 : effect of substrate. In: 2D Materials. 2015 ; Vol. 2, No. 1.

Bibtex

@article{1cf8742e667a4022b511ec64690f683a,
title = "Structural, optical and electrostatic properties of single and fewlayers MoS2: effect of substrate",
abstract = "We have decoupled the intrinsic electrostatic effects arising in monolayer and few-layer MoS2 from those influenced by the flake-substrate interaction. Using ultrasonic force microscopy nanomechanical mapping, we identify the change from supported to suspended flake regions on a trenched substrate. These regions are correlated with the surface potential as measured by scanning Kelvin probe microscopy. Relative to the supported region, we observe an increase in surface potential contrast due to suppressed charge transfer for the suspended monolayer. Using Raman spectroscopy we observe a red shift of the E12g mode for monolayer MoS2 deposited on Si, consistent with a more strained MoS2 on the Si substrate compared to the Au substrate.",
author = "Benjamin Robinson and Cristina Giusca and Yurema Gonzalez and Nicholas Kay and Olga Kazakova and Oleg Kolosov",
note = "Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.",
year = "2015",
month = feb,
day = "20",
doi = "10.1088/2053-1583/2/1/015005",
language = "English",
volume = "2",
journal = "2D Materials",
issn = "2053-1583",
publisher = "IOP Publishing Ltd.",
number = "1",

}

RIS

TY - JOUR

T1 - Structural, optical and electrostatic properties of single and fewlayers MoS2

T2 - effect of substrate

AU - Robinson, Benjamin

AU - Giusca, Cristina

AU - Gonzalez, Yurema

AU - Kay, Nicholas

AU - Kazakova, Olga

AU - Kolosov, Oleg

N1 - Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

PY - 2015/2/20

Y1 - 2015/2/20

N2 - We have decoupled the intrinsic electrostatic effects arising in monolayer and few-layer MoS2 from those influenced by the flake-substrate interaction. Using ultrasonic force microscopy nanomechanical mapping, we identify the change from supported to suspended flake regions on a trenched substrate. These regions are correlated with the surface potential as measured by scanning Kelvin probe microscopy. Relative to the supported region, we observe an increase in surface potential contrast due to suppressed charge transfer for the suspended monolayer. Using Raman spectroscopy we observe a red shift of the E12g mode for monolayer MoS2 deposited on Si, consistent with a more strained MoS2 on the Si substrate compared to the Au substrate.

AB - We have decoupled the intrinsic electrostatic effects arising in monolayer and few-layer MoS2 from those influenced by the flake-substrate interaction. Using ultrasonic force microscopy nanomechanical mapping, we identify the change from supported to suspended flake regions on a trenched substrate. These regions are correlated with the surface potential as measured by scanning Kelvin probe microscopy. Relative to the supported region, we observe an increase in surface potential contrast due to suppressed charge transfer for the suspended monolayer. Using Raman spectroscopy we observe a red shift of the E12g mode for monolayer MoS2 deposited on Si, consistent with a more strained MoS2 on the Si substrate compared to the Au substrate.

U2 - 10.1088/2053-1583/2/1/015005

DO - 10.1088/2053-1583/2/1/015005

M3 - Journal article

VL - 2

JO - 2D Materials

JF - 2D Materials

SN - 2053-1583

IS - 1

M1 - 015005

ER -