High-performance multilevel resistive switching gadolinium oxide memristors with hydrogen plasma immersion ion implantation treatment

Jer Chyi Wang, Chih Hsien Hsu, Yu Ren Ye, Chao Sung Lai, Chi Fong Ai, Wen Fa Tsai

Research output: Contribution to journalJournal Article peer-review

21 Scopus citations

Abstract

Multilevel resistive switching (RS) of gadolinium oxide (Gd xOy) memristors treated by hydrogen plasma immersion ion implantation (PIII) was investigated. Hydrogen ions were implanted at the Pt}/(GdxOy) interface to modify the oxygen-vacancy distribution, which was examined by the X-ray photoelectron spectroscopy. After the hydrogen PIII treatment, a forming process is needed to operate the (Gd xOy) memristors and the RS mechanism is changed from Schottky emission to space-charge-limited conduction. Superior multilevel RS properties such as data retention for more than 104 s at 85 ° C}, and sequentially cycling test for more than 103 times with a resistance ratio of approximately one order of magnitude between each state are realized, making the future high-density flash memory possible.

Original languageEnglish
Article number6748023
Pages (from-to)452-454
Number of pages3
JournalIEEE Electron Device Letters
Volume35
Issue number4
DOIs
StatePublished - 04 2014

Keywords

  • Oxygen vacancy
  • Plasma immersion ion implantation
  • gadolinium oxide
  • hydrogen
  • memristor
  • resistive switching

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