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Dynamic threshold switching Behavior of Ge2Sb2Te5and Sb-doped Ge2Sb2Te5thin films using scanning electrical nanoprobe

  • P. Zhou
  • , Y. C. Shin
  • , B. J. Choi
  • , S. Choi
  • , C. S. Hwang
  • , Y. Y. Lin
  • , H. B. Lv
  • , X. J. Yan
  • , T. A. Tang
  • , L. Y. Chen
  • , B. M. Chen

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The dynamic oscillation in the current-time characteristics of Ge2 Sb2 Te5 and Sb-doped Ge2 Sb2 Te5 thin-film materials was investigated using a scanning electrical nanoprobe. The dynamic oscillation was attributed to the threshold switching of the amorphous-phase Ge2 Sb2 Te5 and doped Ge2 Sb2 Te5 thin films. The microscopic mechanism of the threshold switching behavior was also studied. X-ray diffraction showed that the excess Sb improved the crystallization of Ge2 Sb2 Te5 during postannealing at 300°C. Sb-doping also increased the threshold switching speed.

Original languageEnglish
Pages (from-to)281-283
Number of pages3
JournalElectrochemical and Solid-State Letters
Volume10
Issue number9
DOIs
StatePublished - 1 Jan 2007

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