Atomically precise graphene etch stops for three dimensional integrated systems from two dimensional material heterostructures

Jangyup Son, Junyoung Kwon, Sun Phil Kim, Yinchuan Lv, Jaehyung Yu, Jong Young Lee, Huije Ryu, Kenji Watanabe, Takashi Taniguchi, Rita Garrido-Menacho, Nadya Mason, Elif Ertekin, Pinshane Y. Huang, Gwan Hyoung Lee, Arend M. van der Zande

Research output: Contribution to journalArticle

Abstract

Atomically precise fabrication methods are critical for the development of next-generation technologies. For example, in nanoelectronics based on van der Waals heterostructures, where two-dimensional materials are stacked to form devices with nanometer thicknesses, a major challenge is patterning with atomic precision and individually addressing each molecular layer. Here we demonstrate an atomically thin graphene etch stop for patterning van der Waals heterostructures through the selective etch of two-dimensional materials with xenon difluoride gas. Graphene etch stops enable one-step patterning of sophisticated devices from heterostructures by accessing buried layers and forming one-dimensional contacts. Graphene transistors with fluorinated graphene contacts show a room temperature mobility of 40,000 cm 2 V −1 s −1 at carrier density of 4 × 10 12 cm −2 and contact resistivity of 80 Ω·μm. We demonstrate the versatility of graphene etch stops with three-dimensionally integrated nanoelectronics with multiple active layers and nanoelectromechanical devices with performance comparable to the state-of-the-art.

Original languageEnglish (US)
Article number3988
JournalNature communications
Volume9
Issue number1
DOIs
StatePublished - Dec 1 2018

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Heterojunctions
graphene
Nanoelectronics
Equipment and Supplies
difluorides
Carrier concentration
versatility
Gases
xenon
electric contacts
Fabrication
transistors
Technology
fabrication
electrical resistivity
Temperature
room temperature
gases

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

Cite this

Atomically precise graphene etch stops for three dimensional integrated systems from two dimensional material heterostructures. / Son, Jangyup; Kwon, Junyoung; Kim, Sun Phil; Lv, Yinchuan; Yu, Jaehyung; Lee, Jong Young; Ryu, Huije; Watanabe, Kenji; Taniguchi, Takashi; Garrido-Menacho, Rita; Mason, Nadya; Ertekin, Elif; Huang, Pinshane Y.; Lee, Gwan Hyoung; M. van der Zande, Arend.

In: Nature communications, Vol. 9, No. 1, 3988, 01.12.2018.

Research output: Contribution to journalArticle

Son, J, Kwon, J, Kim, SP, Lv, Y, Yu, J, Lee, JY, Ryu, H, Watanabe, K, Taniguchi, T, Garrido-Menacho, R, Mason, N, Ertekin, E, Huang, PY, Lee, GH & M. van der Zande, A 2018, 'Atomically precise graphene etch stops for three dimensional integrated systems from two dimensional material heterostructures', Nature communications, vol. 9, no. 1, 3988. https://doi.org/10.1038/s41467-018-06524-3
Son, Jangyup ; Kwon, Junyoung ; Kim, Sun Phil ; Lv, Yinchuan ; Yu, Jaehyung ; Lee, Jong Young ; Ryu, Huije ; Watanabe, Kenji ; Taniguchi, Takashi ; Garrido-Menacho, Rita ; Mason, Nadya ; Ertekin, Elif ; Huang, Pinshane Y. ; Lee, Gwan Hyoung ; M. van der Zande, Arend. / Atomically precise graphene etch stops for three dimensional integrated systems from two dimensional material heterostructures. In: Nature communications. 2018 ; Vol. 9, No. 1.
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