skip to main content

Title: Domain engineering of physical vapor deposited two-dimensional materials

Physical vapor deposited two-dimensional (2D) materials span larger areas compared to exfoliated flakes, but suffer from very small grain or domain sizes. In this letter, we fabricate freestanding molybdenum disulfide (MoS{sub 2}) and amorphous boron nitride (BN) specimens to expose both surfaces. We performed in situ heating in a transmission electron microscope to observe the domain restructuring in real time. The freestanding MoS{sub 2} specimens showed up to 100× increase in domain size, while the amorphous BN transformed in to polycrystalline hexagonal BN (h-BN) at temperatures around 600 °C much lower than the 850–1000 °C range cited in the literature.
Authors:
; ; ;  [1] ;  [2] ; ; ;  [3]
  1. Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, 314, Leonhard Building, University Park, Pennsylvania 16802 (United States)
  2. Kettering Laboratories, Department of Chemical and Materials Engineering, University of Dayton, Room 508A, Ohio 45469 (United States)
  3. Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB, 3005 Hobson Way, Building 651/253, Ohio 45433 (United States)
Publication Date:
OSTI Identifier:
22392074
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 21; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BORON NITRIDES; MOLYBDENUM SULFIDES; TEMPERATURE RANGE 0400-1000 K; TRANSMISSION ELECTRON MICROSCOPY; TWO-DIMENSIONAL SYSTEMS; VAPOR DEPOSITED COATINGS