Evaluation of few-layer MoS2 transistors with a top gate and HfO2 dielectric

  • C. D. Young
  • , P. Zhao
  • , P. Bolshakov-Barrett
  • , A. Azcatl
  • , P. K. Hurley
  • , Y. Gomeniuk
  • , M. Schmidt
  • , C. Hinkle
  • , R. M. Wallace

Research output: Chapter in Book/Report/Conference proceedingsChapterpeer-review

Abstract

Top-gated, few-layer MoS2 transistors with a HfO2 gate dielectric are fabricated and subsequently characterized. Both transistor performance and gate-stack interface quality were characterized with current - voltage (I-V) and capacitance - voltage (C-V) measurements. The interface state density (Dit) was extracted and analyzed. The importance of annealing before high-k deposition to reduce the leakage current of the HfO2 gate oxide was shown. Finally, we show preliminary data of HfO2 on MoSe2 to show the possibility of extending this top-gate approach to other TMDs.

Original languageEnglish
Title of host publicationSemiconductors, Dielectrics, and Metals for Nanoelectronics 14
EditorsS. Kar, K. Kita, D. Landheer, D. Misra
PublisherElectrochemical Society Inc.
Pages153-162
Number of pages10
Edition5
ISBN (Electronic)9781607687221
DOIs
Publication statusPublished - 2016
EventSymposium on Semiconductors, Dielectrics, and Metals for Nanoelectronics 14 - PRiME 2016/230th ECS Meeting - Honolulu, United States
Duration: 2 Oct 20167 Oct 2016

Publication series

NameECS Transactions
Number5
Volume75
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

ConferenceSymposium on Semiconductors, Dielectrics, and Metals for Nanoelectronics 14 - PRiME 2016/230th ECS Meeting
Country/TerritoryUnited States
CityHonolulu
Period2/10/167/10/16

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