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Title: Electrostatic properties of two-dimensional WSe{sub 2} nanostructures

Recently, two-dimensional transition metal dichalcogenides have intrigued much attention due to their promising applications in optoelectronics. The electrostatic property investigation of WSe{sub 2} nanostructures is essential for device application. Here, the interlayer screening effects of WSe{sub 2} nanoplates with different thicknesses were investigated by measuring surface potential employing Kelvin probe force microscopy. Simultaneously, charges can be injected into WSe{sub 2} nanoplate by means of conducting atomic force microscopy to tune the electrostatic properties of WSe{sub 2} nanostructures. Our experimental results have some important implications for improving performance of WSe{sub 2}-based optoelectronic devices through interface or surface engineering.
Authors:
 [1] ;  [2] ;  [2] ;  [3] ; ; ; ; ;  [1]
  1. Hunan Key Laboratory for Micro-Nano Energy Materials and Devices, Xiangtan University, Hunan 411105 (China)
  2. (China)
  3. School of Chemistry, Physics and Mechanical Engineering Faculty, Queensland University of Technology, Garden Point Campus, QLD 4001 Brisbane (Australia)
Publication Date:
OSTI Identifier:
22494928
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 119; Journal Issue: 3; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ATOMIC FORCE MICROSCOPY; NANOSTRUCTURES; OPTOELECTRONIC DEVICES; SURFACE POTENTIAL; TRANSITION ELEMENTS; TWO-DIMENSIONAL SYSTEMS