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Title: Spectroscopic signatures of AA' and AB stacking of chemical vapor deposited bilayer MoS2

Journal Article · · ACS Nano
 [1];  [2];  [3];  [4];  [4];  [2];  [5];  [2];  [1]
  1. Univ. of California, Los Angeles, CA (United States)
  2. Rice Univ., Houston, TX (United States)
  3. Southeast Univ., Nanjing (China). School of Energy and Environment; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Innovations for High Performance (IHP), Frankfurt (Germany)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

We report prominent resonance Raman and photoluminescence spectroscopic differences between AA' and AB stacked bilayer molybdenum disulfide (MoS2) grown by chemical vapor deposition. Bilayer MoS2 islands consisting of the two stacking orders were obtained under identical growth conditions. Resonance Moreover, Raman and photoluminescence spectra of AA' and AB stacked bilayer MoS2 were obtained on Au nanopyramid surfaces under strong plasmon resonance. Both resonance Raman and photoluminescence spectra show distinct features indicating clear differences in interlayer interaction between these two phases. Finally, the implication of these findings on device applications based on spin and valley degrees of freedom will be discussed.

Research Organization:
Univ. of California, Los Angeles, CA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
W-7405-ENG-26; AC05-00OR22725
OSTI ID:
1252727
Alternate ID(s):
OSTI ID: 1286946
Journal Information:
ACS Nano, Vol. 9, Issue 12; ISSN 1936-0851
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 86 works
Citation information provided by
Web of Science

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Cited By (23)

Atomic-Scale Structural Modification of 2D Materials journal January 2019
Stacking-controllable interlayer coupling and symmetric configuration of multilayered MoS2 journal February 2018
Controllable growth and electrostatic properties of Bernal stacked bilayer MoS 2 journal September 2016
Thermally driven homonuclear-stacking phase of MoS 2 through desulfurization journal January 2019
Interface Characterization and Control of 2D Materials and Heterostructures journal July 2018
Modeling the vertical growth of van der Waals stacked 2D materials using the diffuse domain method journal January 2020
Hydrothermal synthesis of two-dimensional MoS2 and its applications journal March 2019
A Review on Applications of Two-Dimensional Materials in Surface-Enhanced Raman Spectroscopy journal January 2018
2D Materials-Coated Plasmonic Structures for SERS Applications journal April 2018
Growth of 2H stacked WSe 2 bilayers on sapphire journal January 2019
Origin of Structural Transformation in Mono- and Bi-Layered Molybdenum Disulfide journal May 2016
Distinctive optoelectronic properties of nanostructured MoS 2 bilayers journal August 2019
In situ atomic level studies of thermally controlled interlayer stacking shifts in 2D transition metal dichalcogenide bilayers journal January 2020
Restoring the intrinsic optical properties of CVD-grown MoS 2 monolayers and their heterostructures journal January 2019
Controlled Vapor Growth and Nonlinear Optical Applications of Large-Area 3R Phase WS 2 and WSe 2 Atomic Layers journal January 2019
Thickness and Stacking Sequence Determination of Exfoliated Dichalcogenides (1T-TaS 2 , 2H-MoS 2 ) Using Scanning Transmission Electron Microscopy journal August 2018
Analysis of photoluminescence behavior of high-quality single-layer MoS2 journal April 2019
High-Mobility Multilayered MoS 2 Flakes with Low Contact Resistance Grown by Chemical Vapor Deposition journal February 2017
High degree of circular polarization in WS2 spiral nanostructures induced by broken symmetry journal February 2019
Carrier dynamics and spin–valley–layer effects in bilayer transition metal dichalcogenides journal January 2019
Transition metal dichalcogenides bilayer single crystals by reverse-flow chemical vapor epitaxy journal February 2019
Mapping of Low-Frequency Raman Modes in CVD-Grown Transition Metal Dichalcogenides: Layer Number, Stacking Orientation and Resonant Effects journal January 2016
Davydov splitting and polytypism in few-layer MoS 2 journal October 2018