0
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: not found

      Integration of graphene and two-dimensional ferroelectrics: properties and related functional devices.

      Read this article at

      ScienceOpenPublisherPubMed
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Ferroelectric (FE) thin films have been investigated for many years due to their broad applications in electronic devices. It was recently demonstrated that FE functionality persists in ultrathin films, possibly even in monolayers of two-dimensional (2D) FEs. However, the feasibility of 2D-based FE functional devices remains an open challenge. Here, we employ density-functional-theory calculations to propose and document the possible integration of graphene with 2D FE materials on metal substrates in the form of functional FE devices. We show that monolayers of proposed M2O3 (M = Al, Y) in the quintuple layer (QL) In2Se3 structure are stable 2D FE materials and that QL-M2O3 is a functional tunnel barrier in a graphene/QL-M2O3/Ru heterostructure. The QL-M2O3 barrier width can be modulated by its polarization direction, whereby the heterostructure can function as a prototype ferroelectric tunnel junction. Moreover, alternating the polarization of QL-M2O3 modulates the doping type of graphene, enabling the fabrication of graphene p-n junctions. By design, the proposed heterostructures can in principle be fabricated by intercalation, which is known to produce high-quality, large-scale 2D-based heterostructures.

          Related collections

          Author and article information

          Journal
          Nanoscale Horiz
          Nanoscale horizons
          Royal Society of Chemistry (RSC)
          2055-6764
          2055-6756
          Sep 01 2020
          : 5
          : 9
          Affiliations
          [1 ] Institute of Physics & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China. zhangyuyang@ucas.ac.cn sxdu@iphy.ac.cn.
          Article
          10.1039/d0nh00255k
          32613986
          2a8e85d3-81ad-4500-850a-dd693cf395dc
          History

          Comments

          Comment on this article