Optical identification of single- and few-layer MoS2 sheets
Author
Li, Hai
Lu, Gang
Yin, Zongyou
He, Qiyuan
Li, Hong
Zhang, Qing
Zhang, Hua
Date of Issue
2012School
School of Materials Science and Engineering
School of Electrical and Electronic Engineering
School of Electrical and Electronic Engineering
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.
Type
Journal Article
Series/Journal Title
Small
Rights
© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Collections
http://dx.doi.org/10.1002/smll.201101958
Get published version (via Digital Object Identifier)