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Title: 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 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.
Authors:
 [1] ;  [2] ; ; ;  [1] ; ;  [3] ; ;  [4] ;  [5]
  1. Intelligent Microsystems Chair, TU Dortmund, Emil-Figge-Str. 68, 44227 Dortmund (Germany)
  2. (Germany)
  3. Peter Grünberg Institute, Forschungszentrum Jülich, JARA, 52428 Jülich (Germany)
  4. Werkstoffe und Nanoelektronik, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum (Germany)
  5. Institute of Semiconductor Electronics, RWTH Aachen University, Sommerfeldstr. 24, 52074 Aachen (Germany)
Publication Date:
OSTI Identifier:
22492810
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 118; Journal Issue: 14; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BORON NITRIDES; COLOR; GRAPHENE; IMAGES; LAYERS; NANOMATERIALS; OPTICAL MICROSCOPY; SUBSTRATES; TRANSITION ELEMENTS; TWO-DIMENSIONAL SYSTEMS