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Title: Digital Transfer Growth of Patterned 2D Metal Chalcogenides by Confined Nanoparticle Evaporation

Journal Article · · ACS Nano
DOI:https://doi.org/10.1021/nn5048124· OSTI ID:1162084
 [1];  [2];  [1];  [1];  [1];  [1];  [3];  [1];  [1];  [3];  [4];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science
  2. Univ. of Tennessee, Knoxville, TN (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division; Univ. of Tennessee, Knoxville, TN (United States)

Developing methods for the facile synthesis of two-dimensional (2D) metal chalcogenides and other layered materials is crucial for emerging applications in functional devices. Controlling the stoichiometry, number of the layers, crystallite size, growth location, and areal uniformity is challenging in conventional vapor phase synthesis. Here, we demonstrate a new route to control these parameters in the growth of metal chalcogenide (GaSe) and dichalcogenide (MoSe2) 2D crystals by precisely defining the mass and location of the source materials in a confined transfer growth system. A uniform and precise amount of stoichiometric nanoparticles are first synthesized and deposited onto a substrate by pulsed laser deposition (PLD) at room temperature. This source substrate is then covered with a receiver substrate to form a confined vapor transport growth (VTG) system. By simply heating the source substrate in an inert background gas, a natural temperature gradient is formed that evaporates the confined nanoparticles to grow large, crystalline 2D nanosheets on the cooler receiver substrate, the temperature of which is controlled by the background gas pressure. Large monolayer crystalline domains (~ 100 m lateral sizes) of GaSe and MoSe2 are demonstrated, as well as continuous monolayer films through the deposition of additional precursor materials. This novel PLD-VTG synthesis and processing method offers a unique approach for the controlled growth of large-area, metal chalcogenides with a controlled number of layers in patterned growth locations for optoelectronics and energy related applications.

Research Organization:
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:
AC05-00OR22725
OSTI ID:
1162084
Journal Information:
ACS Nano, Vol. 8, Issue 11; ISSN 1936-0851
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 43 works
Citation information provided by
Web of Science

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Patterned arrays of lateral heterojunctions within monolayer two-dimensional semiconductors journal July 2015
Nanoforging Single Layer MoSe2 Through Defect Engineering with Focused Helium Ion Beams journal August 2016
Colloidally synthesized defect-rich $$\hbox {MoSe}_{2}$$ MoSe 2 nanosheets for superior catalytic activity journal March 2019
Charged impurity scattering in two-dimensional materials with ring-shaped valence bands: GaS, GaSe, InS, and InSe journal February 2019
Curvature-dependent flexible light emission from layered gallium selenide crystals journal January 2018
Electronic and thermoelectric properties of van der Waals materials with ring-shaped valence bands journal August 2015
Charged impurity scattering in two-dimensional materials with ring-shaped valence bands: GaS, GaSe, InS, and InSe text January 2018
Accelerated synthesis of atomically-thin 2D quantum materials by a novel laser-assisted synthesis technique journal November 2019
Laser Synthesis, Processing, and Spectroscopy of Atomically-Thin Two Dimensional Materials book January 2018
First-principles study of electronic, optical and thermal transport properties of group III–VI monolayer MX (M = Ga, In; X = S, Se) journal June 2019
Synthesis and emerging properties of 2D layered III–VI metal chalcogenides journal December 2019
Pulsed laser deposition of single-layer MoS 2 on Au(111): from nanosized crystals to large-area films journal January 2019
2D layered group IIIA metal chalcogenides: synthesis, properties and applications in electronics and optoelectronics journal January 2016