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Title: Designing electronic anisotropy of three-dimensional carbon allotropes for the all-carbon device

Extending two-dimensional (2D) graphene nanosheets to a three-dimensional (3D) network can enhance the design of all-carbon electronic devices. Based on the great diversity of carbon atomic bonding, we have constructed four superlattice-type carbon allotrope candidates, containing sp{sup 2}-bonding transport channels and sp{sup 3}-bonding insulating layers, using density functional theory. It was demonstrated through systematic simulations that the ultra-thin insulating layer with only three-atom thickness can switch off the tunneling transport and isolate the electronic connection between the adjacent graphene strips, and these alternating perpendicular strips also extend the electron road from 2D to 3D. Designing electronic anisotropy originates from the mutually perpendicular π bonds and the rare partial charge density of the corresponding carriers in insulating layers. Our results indicate the possibility of producing custom-designed 3D all-carbon devices with building blocks of graphene and diamond.
Authors:
; ; ;  [1] ; ;  [2]
  1. College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024 (China)
  2. College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124 (China)
Publication Date:
OSTI Identifier:
22483177
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANISOTROPY; CARRIERS; CHARGE DENSITY; DENSITY FUNCTIONAL METHOD; DIAMONDS; ELECTRONIC EQUIPMENT; GRAPHENE; LAYERS; NANOSTRUCTURES; SUPERLATTICES; THICKNESS; TUNNEL EFFECT; TWO-DIMENSIONAL SYSTEMS