Integration Design and Process of 3-D Heterogeneous 6T SRAM with Double Layer Transferred Ge/2Si CFET and IGZO Pass Gates for 42% Reduced Cell Size

X. R. Yu, M. H. Chuang, S. W. Chang, W. H. Chang, T. C. Hong, C. H. Chiang, W. H. Lu, C. Y. Yang, W. J. Chen, J. H. Lin, P. H. Wu, T. C. Sun, S. Kola, Y. S. Yang, Yun Da, P. J. Sung, C. T. Wu, T. C. Cho, G. L. Luo, K. H. KaoM. H. Chiang, W. C.Y. Ma, C. J. Su, T. S. Chao, T. Maeda, S. Samukawa, Y. Li, Y. J. Lee, W. F. Wu, J. H. Tarng, Y. H. Wang

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

9 Citations (Scopus)

Abstract

In this work, we propose an advanced 3-D heterogeneous 6T SRAM with a newly designed hetero-integration method. CFET inverters and IGZO pass gates are vertically stacked within a 2T footprint area. The Low-Temperature Hetero-Layers Bonding Technique (LT-HBT) process is utilized successfully to fabricate single crystalline heterogeneous Double Layer Transferred (DLT) Ge/2Si CFET-OI on an 8-inch full wafer. Furthermore, an IGZO nFET is deposited and treated as a pass gate (PG) to realize a 6T SRAM operation. The hetero-integration of IGZO PG and self-align DLT Ge/2Si CFET inverters showed improved Read Static Noise Margin (RSNM) and stand-by leakage power. The state-of-the-art 3-D heterogeneous 6T SRAM leads to 42% area reduction.

Original languageEnglish
Title of host publication2022 International Electron Devices Meeting, IEDM 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2051-2054
Number of pages4
ISBN (Electronic)9781665489591
DOIs
Publication statusPublished - 2022
Event2022 International Electron Devices Meeting, IEDM 2022 - San Francisco, United States
Duration: 2022 Dec 32022 Dec 7

Publication series

NameTechnical Digest - International Electron Devices Meeting, IEDM
Volume2022-December
ISSN (Print)0163-1918

Conference

Conference2022 International Electron Devices Meeting, IEDM 2022
Country/TerritoryUnited States
CitySan Francisco
Period22-12-0322-12-07

All Science Journal Classification (ASJC) codes

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

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