Contact Engineering for High-Performance N-Type 2D Semiconductor Transistors

  • Y. Lin
  • , P. C. Shen
  • , C. Su
  • , A. S. Chou
  • , T. Wu
  • , C. C. Cheng
  • , J. H. Park
  • , M. H. Chiu
  • , A. Y. Lu
  • , H. L. Tang
  • , M. M. Tavakoli
  • , G. Pitner
  • , X. Ji
  • , C. McGahan
  • , X. Wang
  • , Z. Cai
  • , N. Mao
  • , J. Wang
  • , Y. Wang
  • , W. Tisdale
  • X. Ling, K. E. Aidala, V. Tung, J. Li, A. Zettl, C. I. Wu, Jing Guo, H. Wang, J. Bokor, T. Palacios, L. J. Li, J. Kong

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

10 Citations (Scopus)

Abstract

Two-dimensional (2D) semiconductors are expected to have exceptional properties for ultimately scaled transistors, but forming ohmic contact to them has been challenging, which tremendously limit the transistor performance. In this paper, we review the recent research progress on the elimination of different gap-state pinning effects, including defect-induced gap states (DIGS) and metal-induced gap states (MIGS). Specifically, an oxygen passivation method and a semimetallic contact technology were developed to reduce the DIGS and MIGS, respectively. Based on these approaches, much improved contact resistance and on-state current were observed. Key device metrics were extracted on these high-performance transistors, which reveals future directions for further improving the device performance.

Original languageEnglish
Title of host publication2021 IEEE International Electron Devices Meeting, IEDM 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages37.2.1-37.2.4
ISBN (Electronic)9781665425728
DOIs
Publication statusPublished - 2021
Event2021 IEEE International Electron Devices Meeting, IEDM 2021 - San Francisco, United States
Duration: 2021 Dec 112021 Dec 16

Publication series

NameTechnical Digest - International Electron Devices Meeting, IEDM
Volume2021-December
ISSN (Print)0163-1918

Conference

Conference2021 IEEE International Electron Devices Meeting, IEDM 2021
Country/TerritoryUnited States
CitySan Francisco
Period21-12-1121-12-16

All Science Journal Classification (ASJC) codes

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

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