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Effect of deposition temperature on I-V characteristics of vanadium oxide film

  • X. Y. Wei
  • , M. Hu
  • , F. Wang
  • , J. Wei
  • , K. L. Zhang*
  • *Corresponding author for this work
  • Tianjin University
  • Tianjin University of Technology
  • Agency for Science, Technology and Research, Singapore

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, the effects of deposition temperatures on the resistive switching characteristics of polycrystalline vanadium oxide thin films have been investigated. VOx thin films were prepared by reactive sputtering at various deposition temperatures (RT, 250 °C, 350 °C, and 450 °C, respectively). Xray photoelectron spectroscopy revealed the compositions of VOx thin films. Electrical switching has been observed in Cu(tip)/VOx/Cu memory units by Semiconductor Device Analyzer. Crystalline characterizations revealed that asdeposited (RT) film was amorphous, the films crystallized into different phases (e.g. VO2, V2O5, VO1.86 etc.) with increasing the deposition temperatures. The VOx memory units have low Vset and Vreset. Furthermore, their set voltage decreased from 1.52 V to 0.45 V and reset voltage decreased from 1.01 V to 0.41 V with increasing the deposition temperatures from 250 °C to 450 °C, respectively. The thin films have three orders of change in resistivity between ON-state and OFF-state except asdeposited film. The vanadium oxide thin film can be a promising material for low power nonvolatile memory applications.

Original languageEnglish
Title of host publicationMicro- and Nano-Systems Engineering and Packaging
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages419-422
Number of pages4
EditionPARTS A AND B
ISBN (Print)9780791845257
DOIs
StatePublished - 2012
Externally publishedYes
EventASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012 - Houston, TX, United States
Duration: 9 Nov 201215 Nov 2012

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
NumberPARTS A AND B
Volume9

Conference

ConferenceASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012
Country/TerritoryUnited States
CityHouston, TX
Period9/11/1215/11/12

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