Visibility of two-dimensional layered materials on various substrates

For the investigation of 2D layered materials such as graphene, transition-metal dichalcogenides, boron nitride, and their heterostructures, dedicated substrates are required to enable unambiguous identification through optical microscopy. A systematic study is conducted, focusing on various 2D laye...

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Bibliographic Details
Published in:Journal of applied physics 2015-10, Vol.118 (14)
Main Authors: Müller, M. R., Gumprich, A., Ecik, E., Kallis, K. T., Winkler, F., Kardynal, B., Petrov, I., Kunze, U., Knoch, J.
Format: Article
Language:English
Subjects:
Applied physics
Boron nitride
BORON NITRIDES
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COLOR
Downloading
GRAPHENE
Heterostructures
Layered materials
LAYERS
Microscopy
NANOMATERIALS
OPTICAL MICROSCOPY
Simulation
Stacks
SUBSTRATES
TRANSITION ELEMENTS
Transition metal compounds
TWO-DIMENSIONAL SYSTEMS
Visibility
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Description
Summary:For the investigation of 2D layered materials such as graphene, transition-metal dichalcogenides, boron nitride, and their heterostructures, dedicated substrates are required to enable unambiguous identification through optical microscopy. A systematic study is conducted, focusing on various 2D layered materials and substrates. The simulated colors are displayed and compared with microscopy images. Additionally, the issue of defining an appropriate index for measuring the degree of visibility is discussed. For a wide range of substrate stacks, layer thicknesses for optimum visibility are given along with the resulting sRGB colors. Further simulations of customized stacks can be conducted using our simulation tool, which is available for download and contains a database featuring a wide range of materials.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4930574