Remote Gating of Schottky Barrier for Transistors and Their Vertical Integration

Young Jin Choi, Seongchan Kim, Hwi Je Woo, Young Jae Song, Yoonmyung Lee, Moon Sung Kang, Jeong Ho Cho

Research output: Contribution to journalArticle

Abstract

This paper introduces a strategy to modulate a Schottky barrier formed at a graphene-semiconductor heterojunction. The modulation is performed by controlling the work function of graphene from a gate that is placed laterally away from the graphene-semiconductor junction, which we refer to as the remote gating of a Schottky barrier. The remote gating relies on the sensitive work function of graphene, whose local variation induced by locally applied field effect affects the change in the work function of the entire material. Using Kelvin probe force microscopy analysis, we directly visualize how this local variation in the work function propagates through graphene. These properties of graphene are exploited to assemble remote-gated vertical Schottky barrier transistors (v-SBTs) in an unconventional device architecture. Furthermore, a vertical complementary circuit is fabricated by simply stacking two remote-gated v-SBTs (pentacene layer as the p-channel and indium gallium zinc oxide layer as the n-channel) vertically. We consider that the remote gating of graphene and the associated device architecture presented herein facilitate the extendibility of graphene-based v-SBTs in the vertical assembly of logic circuits. ©

Original languageEnglish
JournalACS Nano
DOIs
Publication statusPublished - 2019 Jan 1

Fingerprint

Graphite
Graphene
graphene
Transistors
transistors
Semiconductor junctions
Zinc Oxide
semiconductor junctions
gallium oxides
logic circuits
Gallium
Indium
Logic circuits
Zinc oxide
zinc oxides
indium
Heterojunctions
heterojunctions
Microscopic examination
assembly

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Choi, Young Jin ; Kim, Seongchan ; Woo, Hwi Je ; Song, Young Jae ; Lee, Yoonmyung ; Kang, Moon Sung ; Cho, Jeong Ho. / Remote Gating of Schottky Barrier for Transistors and Their Vertical Integration. In: ACS Nano. 2019.
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Remote Gating of Schottky Barrier for Transistors and Their Vertical Integration. / Choi, Young Jin; Kim, Seongchan; Woo, Hwi Je; Song, Young Jae; Lee, Yoonmyung; Kang, Moon Sung; Cho, Jeong Ho.

In: ACS Nano, 01.01.2019.

Research output: Contribution to journalArticle

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