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

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

293 Citations (Scopus)

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 languageEnglish
Pages (from-to)682-686
Number of pages5
JournalSmall
Volume8
Issue number5
DOIs
Publication statusPublished - 12 Mar 2012
Externally publishedYes

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