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Tunneling of carrier at the interface barrier induced nonvolatile resistive switching memory behaviors

  • Pingping Zheng
  • , Bai Sun
  • , Yong Zhao
  • , Zhou Yu
  • Southwest Jiaotong University

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The mechanism of resistance switching memory effect has always been a focused scientific topic. In this work, a new resistance conversion mechanism is put forward in a resistance switching device with sandwich structure, in which the Cu2ZnSnSe4 (CZTSe) is used as active layer and the F-doped SnO2 (FTO) and Al-doped ZnO (AZO) acts the top and bottom electrode, respectively. Through further in-depth study, an optimal memory effect in the FTO/CZTSe/AZO device is observed when the thickness of CZTSe film is ∼200 nm (dCZTSe = 200 nm). Finally, the memory characteristics of the resistance switching device is clarified in detail by using a physical model based on the tunneling of carrier at the Schottky barrier which are formed on the FTO/CZTSe and CZTSe/AZO interfaces.

Original languageEnglish
Pages (from-to)164-168
Number of pages5
JournalMaterials Today Communications
Volume16
DOIs
StatePublished - Sep 2018
Externally publishedYes

Keywords

  • CuZnSnSe
  • Mechanism
  • Schottky barrier
  • Thickness
  • Tunneling of carrier

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