Optical Identification of Single- and Few-Layer MoS2 Sheets

Hai Li; Gang Lu; Zongyou Yin; Qiyuan He; Hong Li; Qing Zhang; Hua Zhang

doi:10.1002/smll.201101958

Optical Identification of Single- and Few-Layer MoS₂ Sheets

Hai Li
, Gang Lu
, Zongyou Yin
, Qiyuan He
, Hong Li
, Qing Zhang
, Hua Zhang^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

318 Citations (Scopus)

Abstract

A simple approach is developed to identify the layer number of 2D MoS₂ sheets. By using an optical imaging method combined with image analysis software, a high-contrast image of the MoS₂ sheets can be extracted from the red (R) channel of the color optical microscopy image. The value of the intensity difference in the grayscale image of the R channel between MoS₂ sheets (1-3 layers) and the SiO₂ substrate can be used to identify the layer number of the sheet. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Original language	English
Pages (from-to)	682-686
Journal	Small
Volume	8
Issue number	5
Online published	5 Jan 2012
DOIs	https://doi.org/10.1002/smll.201101958
Publication status	Published - 12 Mar 2012
Externally published	Yes

Research Keywords

atomic force microscopy
chalcogenides
layered materials
optical imaging
Raman spectroscopy

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10.1002/smll.201101958

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Cite this

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title = "Optical Identification of Single- and Few-Layer MoS2 Sheets",

abstract = "A simple approach is developed to identify the layer number of 2D MoS2 sheets. By using an optical imaging method combined with image analysis software, a high-contrast image of the MoS2 sheets can be extracted from the red (R) channel of the color optical microscopy image. The value of the intensity difference in the grayscale image of the R channel between MoS2 sheets (1-3 layers) and the SiO2 substrate can be used to identify the layer number of the sheet. Copyright {\textcopyright} 2012 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim.",

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author = "Hai Li and Gang Lu and Zongyou Yin and Qiyuan He and Hong Li and Qing Zhang and Hua Zhang",

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doi = "10.1002/smll.201101958",

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T1 - Optical Identification of Single- and Few-Layer MoS2 Sheets

AU - Li, Hai

AU - Lu, Gang

AU - Yin, Zongyou

AU - He, Qiyuan

AU - Li, Hong

AU - Zhang, Qing

AU - Zhang, Hua

PY - 2012/3/12

Y1 - 2012/3/12

N2 - A simple approach is developed to identify the layer number of 2D MoS2 sheets. By using an optical imaging method combined with image analysis software, a high-contrast image of the MoS2 sheets can be extracted from the red (R) channel of the color optical microscopy image. The value of the intensity difference in the grayscale image of the R channel between MoS2 sheets (1-3 layers) and the SiO2 substrate can be used to identify the layer number of the sheet. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

AB - A simple approach is developed to identify the layer number of 2D MoS2 sheets. By using an optical imaging method combined with image analysis software, a high-contrast image of the MoS2 sheets can be extracted from the red (R) channel of the color optical microscopy image. The value of the intensity difference in the grayscale image of the R channel between MoS2 sheets (1-3 layers) and the SiO2 substrate can be used to identify the layer number of the sheet. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

KW - atomic force microscopy

KW - chalcogenides

KW - layered materials

KW - optical imaging

KW - Raman spectroscopy

UR - https://www.scopus.com/pages/publications/84863230065

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U2 - 10.1002/smll.201101958

DO - 10.1002/smll.201101958

M3 - RGC 21 - Publication in refereed journal

SN - 1613-6810

VL - 8

SP - 682

EP - 686

JO - Small

JF - Small

IS - 5

ER -