Characterization of Double HfZrO2based FeFET toward Low-Voltage Multi-Level Operation for High Density Nonvolatile Memory

  • Z. F. Lou
  • , C. Y. Liao
  • , K. Y. Hsiang
  • , C. Y. Lin
  • , Y. D. Lin
  • , P. C. Yeh
  • , C. Y. Wang
  • , H. Y. Yang
  • , P. J. Tzeng
  • , T. H. Hou
  • , Y. T. Tang*
  • , M. H. Lee*
  • *Corresponding author for this work

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

3 Scopus citations

Abstract

A double HfZrO2 (HZO) ferroelectric field-effect transistor (FeFET) is demonstrated with ultra-low operating voltage as |VP/E| = 3 V to achieve multilevel cell (MLC) nonvolatile memory (NVM). Compared to a single FE-HZO FeFET, the metal/ferroelectric/metal/ferroelectric/Si (MFMFS) structure results not only in a reduction of VP/E, but also provides a feasible memory window (MW) of 1.9 V for MLC operation. In addition, the metal/ferroelectric/insulator/ ferroelectric/Si (MFIFS) FeFET exhibits a MW as high as >2.5 V. The double HZO FeFET has potential to improve power consumption and enhance memory density for MLC-NVM applications.

Original languageEnglish
Title of host publication2022 International Symposium on VLSI Technology, Systems and Applications, VLSI-TSA 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665409230
DOIs
StatePublished - 2022
Event2022 International Symposium on VLSI Technology, Systems and Applications, VLSI-TSA 2022 - Hsinchu, Taiwan
Duration: 18 Apr 202221 Apr 2022

Publication series

Name2022 International Symposium on VLSI Technology, Systems and Applications, VLSI-TSA 2022

Conference

Conference2022 International Symposium on VLSI Technology, Systems and Applications, VLSI-TSA 2022
Country/TerritoryTaiwan
CityHsinchu
Period18/04/2221/04/22

Keywords

  • Double HZO
  • FeFET
  • ferroelectric

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