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Ion reaction tunable ON/OFF ratio of vertically oriented Zn-Al layered-double-hydroxide nanosheets based memristor

  • Feng Yang
  • , Mayameen S. Kadhim
  • , Mashair Babiker
  • , Hosameldeen Elshekh
  • , Wentao Hou
  • , Guoqiang Huang
  • , Yong Zhang
  • , Yong Zhao
  • , Bai Sun
  • Southwest Jiaotong University
  • Nanjing University of Aeronautics and Astronautics

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Resistance random access memory (RRAM) has attracted considerable scientific and industrial attention as a next-generation data memory system. In this work, zinc–aluminium layered double hydroxide Zn-Al (LDH) films were sequentially prepared by direct deposition on alumina (Al) foil substrate. Further, a sandwich Ag/Zn-Al (LDH)/Al structure was prepared by printing Ag as a top electrode. The device displays a variable OFF/ON resistance ratio (from 104 to 102) due to the stacked, layered structure and interaction of Ag ion and anion inside Zn-Al (LDH) layer. To explain the conductive mechanism, the formation and rupture of nanoscale Ag filament inside the Zn-Al (LDH) vertical nanosheets are recommended to describe the memory performance. This work indicates that Zn-Al (LDH) vertical nanosheets have great potential to be used in flexible memory devices in the near future.

Original languageEnglish
Article number100573
JournalMaterials Today Communications
Volume20
DOIs
StatePublished - Sep 2019
Externally publishedYes

Keywords

  • Memory device
  • Multistage switching
  • Resistive switching
  • Zn-Al (LDH)

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