Mapping Graphene Grain Orientation by the Growth of WS2Films with Oriented Cracks

Seon Joon Kim; Da Luo; Kangho Park; Myeonggi Choe; Dae Woo Kim; Meihui Wang; Woo Bin Jung; Zonghoon Lee; Rodney S. Ruoff; Hee Tae Jung

doi:10.1021/acs.chemmater.0c02551

Mapping Graphene Grain Orientation by the Growth of WS₂Films with Oriented Cracks

Seon Joon Kim, Da Luo, Kangho Park, Myeonggi Choe, Dae Woo Kim, Meihui Wang, Woo Bin Jung, Zonghoon Lee, Rodney S. Ruoff, Hee Tae Jung

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

We map the lattice orientation of graphene grains (domains) larger than a centimeter by measuring the orientation of cracks in a WS2 film grown on graphene that had been previously grown by chemical vapor deposition (CVD) on Cu foils. A WO3 film was first deposited on the graphene film and then converted to a WS2 film by CVD sulfurization. The WS2 film was found to contain cracks that, as found by electron diffraction and optical birefringence, are always aligned along the armchair direction of the graphene lattice. We find that this method is significantly advanced compared to any published methods for the analysis of the grain structure, as it provides simultaneous and high-contrast mapping of grain orientation without needing further analysis.

Original language	English
Pages (from-to)	7484-7491
Number of pages	8
Journal	Chemistry of Materials
Volume	32
Issue number	17
DOIs	https://doi.org/10.1021/acs.chemmater.0c02551
Publication status	Published - 2020 Sept 8

Bibliographical note

Funding Information:
The authors acknowledge the Pohang Accelerator Laboratory (PAL) for the help in conducting synchrotron experiments. This research was financially supported by a grant (2018R1A2B3008658) of the National Research Foundation (NRF) of Korea, funded by the Ministry of Science and ICT, Korea, and also by the Institute for Basic Science. (IBS-R019-D1; specifically, for M.W., D.L., M.C., Z.L., and R.S.R.) S.J.K. acknowledges funding from the institutional research programs of KIST.

Publisher Copyright:
Copyright © 2020 American Chemical Society.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)
Materials Chemistry

Access to Document

10.1021/acs.chemmater.0c02551

Cite this

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title = "Mapping Graphene Grain Orientation by the Growth of WS2Films with Oriented Cracks",

abstract = "We map the lattice orientation of graphene grains (domains) larger than a centimeter by measuring the orientation of cracks in a WS2 film grown on graphene that had been previously grown by chemical vapor deposition (CVD) on Cu foils. A WO3 film was first deposited on the graphene film and then converted to a WS2 film by CVD sulfurization. The WS2 film was found to contain cracks that, as found by electron diffraction and optical birefringence, are always aligned along the armchair direction of the graphene lattice. We find that this method is significantly advanced compared to any published methods for the analysis of the grain structure, as it provides simultaneous and high-contrast mapping of grain orientation without needing further analysis.",

author = "Kim, {Seon Joon} and Da Luo and Kangho Park and Myeonggi Choe and Kim, {Dae Woo} and Meihui Wang and Jung, {Woo Bin} and Zonghoon Lee and Ruoff, {Rodney S.} and Jung, {Hee Tae}",

note = "Funding Information: The authors acknowledge the Pohang Accelerator Laboratory (PAL) for the help in conducting synchrotron experiments. This research was financially supported by a grant (2018R1A2B3008658) of the National Research Foundation (NRF) of Korea, funded by the Ministry of Science and ICT, Korea, and also by the Institute for Basic Science. (IBS-R019-D1; specifically, for M.W., D.L., M.C., Z.L., and R.S.R.) S.J.K. acknowledges funding from the institutional research programs of KIST. Publisher Copyright: Copyright {\textcopyright} 2020 American Chemical Society.",

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AU - Luo, Da

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AU - Kim, Dae Woo

AU - Wang, Meihui

AU - Jung, Woo Bin

AU - Lee, Zonghoon

AU - Ruoff, Rodney S.

AU - Jung, Hee Tae

N1 - Funding Information: The authors acknowledge the Pohang Accelerator Laboratory (PAL) for the help in conducting synchrotron experiments. This research was financially supported by a grant (2018R1A2B3008658) of the National Research Foundation (NRF) of Korea, funded by the Ministry of Science and ICT, Korea, and also by the Institute for Basic Science. (IBS-R019-D1; specifically, for M.W., D.L., M.C., Z.L., and R.S.R.) S.J.K. acknowledges funding from the institutional research programs of KIST. Publisher Copyright: Copyright © 2020 American Chemical Society.

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