Visibility of two-dimensional layered materials on various substrates

Journal Article · Wed Oct 14 00:00:00 EDT 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4930574· OSTI ID:22492810

Gumprich, A.; Ecik, E.; Kallis, K. T. ^[1]; Winkler, F.; Kardynal, B. ^[2]; Petrov, I.; Kunze, U. ^[3]

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1. Intelligent Microsystems Chair, TU Dortmund, Emil-Figge-Str. 68, 44227 Dortmund (Germany)
2. Peter Grünberg Institute, Forschungszentrum Jülich, JARA, 52428 Jülich (Germany)
3. Werkstoffe und Nanoelektronik, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum (Germany)

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.

• OSTI ID: 22492810
• Journal Information: Journal of Applied Physics, Vol. 118, Issue 14; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BORON NITRIDES
COLOR
GRAPHENE
IMAGES
LAYERS
NANOMATERIALS
OPTICAL MICROSCOPY
SUBSTRATES
TRANSITION ELEMENTS
TWO-DIMENSIONAL SYSTEMS