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Title: van der Waals Epitaxy of MoS2 Layers Using Graphene As Growth Templates

Abstract

We present a method for synthesizing MoS{sub 2}/Graphene hybrid heterostructures with a growth template of graphene-covered Cu foil. Compared to other recent reports, a much lower growth temperature of 400 C is required for this procedure. The chemical vapor deposition of MoS{sub 2} on the graphene surface gives rise to single crystalline hexagonal flakes with a typical lateral size ranging from several hundred nanometers to several micrometers. The precursor (ammonium thiomolybdate) together with solvent was transported to graphene surface by a carrier gas at room temperature, which was then followed by post annealing. At an elevated temperature, the precursor self-assembles to form MoS{sub 2} flakes epitaxially on the graphene surface via thermal decomposition. With higher amount of precursor delivered onto the graphene surface, a continuous MoS{sub 2} film on graphene can be obtained. This simple chemical vapor deposition method provides a unique approach for the synthesis of graphene heterostructures and surface functionalization of graphene. The synthesized two-dimensional MoS{sub 2}/Graphene hybrids possess great potential toward the development of new optical and electronic devices as well as a wide variety of newly synthesizable compounds for catalysts.

Authors:
 [1];  [2];  [3];  [1];  [1];  [1];  [1];  [1];  [4];  [3];  [5];  [1]
  1. Massachusetts Institute of Technology (MIT)
  2. Vanderbilt University
  3. Academia Sinica, Hefei, China
  4. Singapore University of Technology and Design
  5. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Shared Research Equipment Collaborative Research Center
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1049932
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Nano Letters
Additional Journal Information:
Journal Volume: 12; Journal Issue: 6; Journal ID: ISSN 1530-6984
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ANNEALING; CATALYSTS; CHEMICAL VAPOR DEPOSITION; EPITAXY; MOLYBDENUM; PRECURSOR; PYROLYSIS; SOLVENTS; SYNTHESIS; STEM; EELS; graphene; MoS2

Citation Formats

Shi, Yumeng, Zhou, Wu, Lu, Ang-Yu, Fang, Wenjing, Lee, Yi-Hsien, Hsu, Allen Long, Kim, Soo Min, Kim, Ki Kang, Yang, Hui Ying, Liang, Lain-Jong, Idrobo Tapia, Juan C, and Kong, Jing. van der Waals Epitaxy of MoS2 Layers Using Graphene As Growth Templates. United States: N. p., 2012. Web. doi:10.1021/nl204562j.
Shi, Yumeng, Zhou, Wu, Lu, Ang-Yu, Fang, Wenjing, Lee, Yi-Hsien, Hsu, Allen Long, Kim, Soo Min, Kim, Ki Kang, Yang, Hui Ying, Liang, Lain-Jong, Idrobo Tapia, Juan C, & Kong, Jing. van der Waals Epitaxy of MoS2 Layers Using Graphene As Growth Templates. United States. https://doi.org/10.1021/nl204562j
Shi, Yumeng, Zhou, Wu, Lu, Ang-Yu, Fang, Wenjing, Lee, Yi-Hsien, Hsu, Allen Long, Kim, Soo Min, Kim, Ki Kang, Yang, Hui Ying, Liang, Lain-Jong, Idrobo Tapia, Juan C, and Kong, Jing. Sun . "van der Waals Epitaxy of MoS2 Layers Using Graphene As Growth Templates". United States. https://doi.org/10.1021/nl204562j.
@article{osti_1049932,
title = {van der Waals Epitaxy of MoS2 Layers Using Graphene As Growth Templates},
author = {Shi, Yumeng and Zhou, Wu and Lu, Ang-Yu and Fang, Wenjing and Lee, Yi-Hsien and Hsu, Allen Long and Kim, Soo Min and Kim, Ki Kang and Yang, Hui Ying and Liang, Lain-Jong and Idrobo Tapia, Juan C and Kong, Jing},
abstractNote = {We present a method for synthesizing MoS{sub 2}/Graphene hybrid heterostructures with a growth template of graphene-covered Cu foil. Compared to other recent reports, a much lower growth temperature of 400 C is required for this procedure. The chemical vapor deposition of MoS{sub 2} on the graphene surface gives rise to single crystalline hexagonal flakes with a typical lateral size ranging from several hundred nanometers to several micrometers. The precursor (ammonium thiomolybdate) together with solvent was transported to graphene surface by a carrier gas at room temperature, which was then followed by post annealing. At an elevated temperature, the precursor self-assembles to form MoS{sub 2} flakes epitaxially on the graphene surface via thermal decomposition. With higher amount of precursor delivered onto the graphene surface, a continuous MoS{sub 2} film on graphene can be obtained. This simple chemical vapor deposition method provides a unique approach for the synthesis of graphene heterostructures and surface functionalization of graphene. The synthesized two-dimensional MoS{sub 2}/Graphene hybrids possess great potential toward the development of new optical and electronic devices as well as a wide variety of newly synthesizable compounds for catalysts.},
doi = {10.1021/nl204562j},
url = {https://www.osti.gov/biblio/1049932}, journal = {Nano Letters},
issn = {1530-6984},
number = 6,
volume = 12,
place = {United States},
year = {2012},
month = {1}
}