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Title: Atomically Thin Heterostructures Based on Single-Layer Tungsten Diselenide and Graphene [Plus Supplemental Information]

Journal Article · · Nano Letters
DOI:https://doi.org/10.1021/nl503144a· OSTI ID:1183087
 [1];  [2];  [3];  [3];  [4];  [4];  [5];  [5];  [4]; ;  [4];  [6];  [5];  [3];  [3];  [2];  [1]
  1. Pennsylvania State Univ., University Park, PA (United States). Dept. of Materials Science and Engineering and Center for 2-Dimensional and Layered Materials
  2. Inst. of Atomic and Molecular Sciences, Tapei (Taiwan)
  3. Pennsylvania State Univ., University Park, PA (United States). Dept. of Electrical Engineering
  4. Univ. of Texas at Dallas, Richardson, TX (United States). Dept. of Materials Science and Engineering
  5. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  6. Naval Research Lab. (NRL), Washington, DC (United States)

Heterogeneous engineering of two-dimensional layered materials, including metallic graphene and semiconducting transition metal dichalcogenides, presents an exciting opportunity to produce highly tunable electronic and optoelectronic systems. We report the direct growth of highly crystalline, monolayer tungsten diselenide (WSe2) on epitaxial graphene (EG). Raman spectroscopy and photoluminescence confirms high-quality WSe2 monolayers; while transmission electron microscopy shows an atomically sharp interface and low energy electron diffraction confirms near perfect orientation between WSe2 and EG. Vertical transport measurements across the WSe2/EG heterostructure provides evidence that a tunnel barrier exists due to the van der Waals gap, and is supported by density functional theory that predicts a 1.6 eV barrier for transport from WSe2 to graphene.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1183087
Report Number(s):
SAND-2014-16778J; 536647
Journal Information:
Nano Letters, Vol. 14, Issue 12; ISSN 1530-6984
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 104 works
Citation information provided by
Web of Science

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Cited By (28)

One dimensional metallic edges in atomically thin WSe 2 induced by air exposure journal March 2018
A roadmap for electronic grade 2D materials journal January 2019
Exciton polaritons in two-dimensional dichalcogenide layers placed in a planar microcavity: Tunable interaction between two Bose-Einstein condensates journal December 2015
Two-dimensional GaSe/MoSe 2 misfit bilayer heterojunctions by van der Waals epitaxy journal April 2016
Interface-Induced WSe2 In-plane Homojunction for High-Performance Photodetection journal May 2020
WSe 2 homojunctions and quantum dots created by patterned hydrogenation of epitaxial graphene substrates journal January 2019
Novel Optoelectronic Devices: Transition-Metal-Dichalcogenide-Based 2D Heterostructures journal January 2018
2D-Crystal-Based Functional Inks journal June 2016
2D materials and van der Waals heterostructures journal July 2016
Influence of a substrate on ultrafast interfacial charge transfer and dynamical interlayer excitons in monolayer WSe 2 /graphene heterostructures journal January 2020
Atomistic modeling of the metallic-to-semiconducting phase boundaries in monolayer MoS 2 journal June 2016
Substantial improvements of long-term stability in encapsulation-free WS 2 using highly interacting graphene substrate journal November 2016
The vertical growth of MoS 2 layers at the initial stage of CVD from first-principles journal April 2018
Parallel Stitching of 2D Materials journal January 2016
Progress, Challenges, and Opportunities for 2D Material Based Photodetectors journal September 2018
2D materials advances: from large scale synthesis and controlled heterostructures to improved characterization techniques, defects and applications journal December 2016
Band Structure Engineering in 2D Materials for Optoelectronic Applications journal September 2018
Scalable BEOL compatible 2D tungsten diselenide journal December 2019
Multimodal spectromicroscopy of monolayer WS 2 enabled by ultra-clean van der Waals epitaxy journal July 2018
Physical properties of low-dimensional s p 2 -based carbon nanostructures journal May 2016
Strain-Mediated Stability of Structures and Electronic Properties of ReS 2 , Janus ReSSe, and ReSe 2 Monolayers journal October 2019
Tuning the Electronic and Photonic Properties of Monolayer MoS 2 via In Situ Rhenium Substitutional Doping journal February 2018
A General Method for the Chemical Synthesis of Large-Scale, Seamless Transition Metal Dichalcogenide Electronics journal January 2018
Misfit strain-induced energy dissipation for graphene/MoS 2 heterostructure nanomechanical resonators journal April 2019
Theory of optically induced Förster coupling in van der Waals coupled heterostructures journal January 2019
2D materials and van der Waals heterostructures text January 2016
Atomically Sharp Interface in an h-BN-epitaxial graphene van der Waals Heterostructure journal November 2015
Na-ion Storage Performances of FeSex and Fe2O3 Hollow Nanoparticles-Decorated Reduced Graphene Oxide Balls prepared by Nanoscale Kirkendall Diffusion Process journal February 2016

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