Negative-Capacitance FinFET Inverter, Ring Oscillator, SRAM Cell, and Ft

  • Kai Shin Li
  • , Yun Jie Wei
  • , Yi Ju Chen
  • , Wen Cheng Chiu
  • , Hsiu Chih Chen
  • , Min Hung Lee
  • , Yu Fan Chiu
  • , Fu Kuo Hsueh
  • , Bo Wei Wu
  • , Pin Guang Chen
  • , Tung Yan Lai
  • , Chun Chi Chen
  • , Jia Min Shieh
  • , Wen Kuan Yeh
  • , Sayeef Salahuddin
  • , Chenming Hu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

26 Citations (Scopus)

Abstract

In this work, we use thermal-ALD to prepare ferroelectric HfZrO2 (HZO) thin film with thickness from 3 to 7 nm for the NC-FinFET's gate stack. The subthreshold swing (SS) was as low as 5 mV/dec (SSmin) over 4 orders of ID. Lower thermal budget process, CO2 far-infrared laser activation and 400°C Ni silicide are employed in the 2-level metal backend integration for maintaining the orthorhombic phase in HZO thin film and minimizing the hysteresis in IV. NC-FinFET inverter has 77% higher voltage gain compared to FinFET-inverter employing HfO2 gate dielectric. NC-FinFET ring oscillator exhibit small speed and power advantages over FinFET oscillator. For the first time, NC-FET cut-off frequency (Ft) frequency is measured, 23.1 GHz or 23% higher than the control FET Ft. NC-FinFET SRAM was observed to exhibit large noise margin.

Original languageEnglish
Title of host publication2018 IEEE International Electron Devices Meeting, IEDM 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages31.7.1-31.7.4
ISBN (Electronic)9781728119878
DOIs
Publication statusPublished - 2018 Jul 2
Event64th Annual IEEE International Electron Devices Meeting, IEDM 2018 - San Francisco, United States
Duration: 2018 Dec 12018 Dec 5

Publication series

NameTechnical Digest - International Electron Devices Meeting, IEDM
Volume2018-December
ISSN (Print)0163-1918

Conference

Conference64th Annual IEEE International Electron Devices Meeting, IEDM 2018
Country/TerritoryUnited States
CitySan Francisco
Period2018/12/012018/12/05

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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