Optical identification of single- and few-layer MoS 2 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 MoS ₂ sheets

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

Nanyang Technological University

Research output: Contribution to journal › Article › peer-review

307 Scopus citations

Abstract

A simple approach is developed to identify the layer number of 2D MoS ₂ sheets. By using an optical imaging method combined with image analysis software, a high-contrast image of the MoS ₂ 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 MoS ₂ sheets (1-3 layers) and the SiO ₂ substrate can be used to identify the layer number of the sheet.

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

Keywords

Raman spectroscopy
atomic force microscopy
chalcogenides
layered materials
optical imaging

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10.1002/smll.201101958

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abstract = "A simple approach is developed to identify the layer number of 2D MoS 2 sheets. By using an optical imaging method combined with image analysis software, a high-contrast image of the MoS 2 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 MoS 2 sheets (1-3 layers) and the SiO 2 substrate can be used to identify the layer number of the sheet.",

keywords = "Raman spectroscopy, atomic force microscopy, chalcogenides, layered materials, optical imaging",

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 MoS 2 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 MoS 2 sheets. By using an optical imaging method combined with image analysis software, a high-contrast image of the MoS 2 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 MoS 2 sheets (1-3 layers) and the SiO 2 substrate can be used to identify the layer number of the sheet.

AB - A simple approach is developed to identify the layer number of 2D MoS 2 sheets. By using an optical imaging method combined with image analysis software, a high-contrast image of the MoS 2 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 MoS 2 sheets (1-3 layers) and the SiO 2 substrate can be used to identify the layer number of the sheet.

KW - Raman spectroscopy

KW - atomic force microscopy

KW - chalcogenides

KW - layered materials

KW - optical imaging

UR - http://www.scopus.com/inward/record.url?scp=84863230065&partnerID=8YFLogxK

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DO - 10.1002/smll.201101958

M3 - 文章

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JO - Small

JF - Small

IS - 5

ER -

Optical identification of single- and few-layer MoS ₂ sheets

Abstract

Keywords

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