Optical Identification of Single- and Few-layer MoS₂ Sheets

Overview

Journal Small

Date 2012 Jan 7

PMID 22223545

Citations 26

Authors

Hai Li

Gang Lu

Zongyou Yin

Qiyuan He

Hong Li

Qing Zhang

Hua Zhang

Affiliations

Soon will be listed here.

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.

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