• About
  • Policies
  • What is openaccess
  • Library
  • Contact
Advanced search
      View Item 
      •   BUIR Home
      • Scholarly Publications
      • Institute of Materials Science and Nanotechnology (UNAM)
      • View Item
      •   BUIR Home
      • Scholarly Publications
      • Institute of Materials Science and Nanotechnology (UNAM)
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.

      Nanoscale dielectric capacitors composed of graphene and boron nitride layers: a first-principles study of high capacitance at nanoscale

      Thumbnail
      View / Download
      1.4 Mb
      Author
      Özçelik, V. O.
      Çıracı, Salim
      Date
      2013
      Source Title
      Journal of Physical Chemistry C
      Print ISSN
      1932-7447
      Publisher
      American Chemical Society
      Volume
      117
      Issue
      29
      Pages
      15327 - 15334
      Language
      English
      Type
      Article
      Item Usage Stats
      144
      views
      120
      downloads
      Abstract
      We investigate a nanoscale dielectric capacitor model consisting of two-dimensional, hexagonal h-BN layers placed between two commensurate and metallic graphene layers using self-consistent field density functional theory. The separation of equal amounts of electric charge of different sign in different graphene layers is achieved by applying an electric field perpendicular to the layers. The stored charge, energy, and the electric potential difference generated between the metallic layers are calculated from the first principles for the relaxed structures. Predicted high-capacitance values exhibit the characteristics of supercapacitors. The capacitive behavior of the present nanoscale model is compared with that of the classical Helmholtz model, which reveals crucial quantum size effects at small separations, which in turn recede as the separation between metallic planes increases. © 2013 American Chemical Society.
      Permalink
      http://hdl.handle.net/11693/20889
      Published Version (Please cite this version)
      http://dx.doi.org/10.1021/jp403706e
      Collections
      • Department of Physics 2299
      • Institute of Materials Science and Nanotechnology (UNAM) 1775
      Show full item record

      Browse

      All of BUIRCommunities & CollectionsTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartmentsThis CollectionTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartments

      My Account

      Login

      Statistics

      View Usage StatisticsView Google Analytics Statistics

      Bilkent University

      If you have trouble accessing this page and need to request an alternate format, contact the site administrator. Phone: (312) 290 1771
      Copyright © Bilkent University - Library IT

      Contact Us | Send Feedback | Off-Campus Access | Admin | Privacy