Title of Paper:Layer Identification of Colorful Black Phosphorus

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Affiliation of Author(s):航空学院

Journal:Small

Abstract:The relationship between layer numbers and colors of the mechanical-exfoliated black phosphorus (BP) samples on 300 nm SiO2/Si wafers through the reflection spectrum calculations combining with the International Commission on Illumination (CIE 1931) color space. The sRGB parameters changing with layer numbers are calculated and the colorbar is drawn when the incident light is white light from halogen lamp in optical microscope. The calculation results are consistent with the experiments and provide effective information for rapid identification of the layer number range of BP. The contrasts of few-layer BP are also presented, according to which the optimal selection of substrates and wavelength are proposed. On the basis of the colorbar, one can conveniently and efficiently identify approximate layer number range of BP layers by simply comparing colors. Adjusting different substrates or monochromatic light can further enhance the visibility of BP.

ISSN No.:1613-6810

Translation or Not:no

Date of Publication:2017-01-01

Co-author:陈红烨,费雯雯,缪春阳,Guo Wanlin

Correspondence Author:Guo Wanlin,Zhou Jianxin