Effects of H<sub>2 </sub>Interaction with MoS<sub>2</sub>: Electronic Behavior and Sensing Applications

ORAL

Abstract

In this work, we probe the electronic properties of monolayer MoS2 via interaction with H2, aiming for sensing application. The MoS2 FET exhibit a response to H2 in a wide range of concentration (0.1-90 %) at relatively low temperatures (300-473 K). These H2 sensor show desirable properties such absence of catalytic metal dopants (Pt or Pd) and full reversibility. Based in three experiments, we demonstrate that the conductivity of MoS2 increases as a function of the H2 concentration due to a reversible charge transferring process. Further, we propose that such process originates from the dissociative H2 adsorption driven by interaction with sulfur vacancies in the MoS2 surface (VS). This proposal is in agreement with related DFT studies about H2 adsorption on MoS2. Finally, measurements on partially defect-passivated MoS2 FETs using atomic layer deposited Al2O3 consisting of an experimental indication that the VS plays an important role in the H2 interaction with the MoS2. Our findings provide insights for futures applications in catalytic process between monolayer MoS2 and H2.

*We thank the financial support given by CAPES, Fapemig (Rede 2D), CNPq and INCT/Nanomaterials de Carbono.

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Presenters

  • Natália Rezende

    • Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, 30123-970, Brasil

Authors

  • Natália Rezende

    • Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, 30123-970, Brasil

  • Alisson Ronieri Cadore

    • Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, 30123-970, Brasil

  • Andreij de Carvalho Gadelha

    • Departamento de Fisica, UFMG, Brazil
    • Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, 30123-970, Brasil

  • Cíntia Lima Pereira

    • Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, 30123-970, Brasil

  • Vinícius Ornelas da Silva

    • Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, 30123-970, Brasil

  • Takashi Taniguchi

    • National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305 0044, Japan
    • National Institute for Materials Science
    • Advanced Materials Laboratory, National Institute for Materials Science, , 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Material Science, 1-1 Namiki, Tsukuba 305-0044
    • National Institute of Materials Science
    • NIMS, Japan
    • Advanced Materials Laboratory, NIMS
    • National Institute for Materials Science, Tsukuba, Japan
    • Advanced Materials Laboratory, National Institute for Materials Science
    • National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0044, Japan
    • National Institute for Materials Science (NIMS)
    • NIMS Tsukuba
    • NIMS
    • National Institute for Material Science
    • National Institute for Materials Science, Japan
    • National Institute for Materials Science, 1-1 Namiki, Tsukuba, Japan
    • National Institute for Materials Science , Japan
    • Advanced Materials Laboratory, National Institute for Materials Science, Japan
    • Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
    • National Institute for Materials Science, Tsukuba, Ibaraki 305- 0044, Japan
    • National Institute for Material Science - Japan
    • National Institute for Materials Science, Namiki Tsukuba Ibaraki, Japan
    • National Institute of Material Science
    • Advanced Material Lab, NIMS
    • Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Japan
    • Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
    • National Institute for Materials Science, Tsukuba
    • 1-1 Namiki, Tsukuba, National Institute for Materials Science
    • NIMS/Tsukuba
    • National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044 Japan
    • National Institute for Materials Science, Namiki, 305-0044, Japan
    • National Institute for Material Science, Japan
    • Advanced Materials Laboratory, NIMS, Japan
    • Advanced Materials Labaratory, National Institute for Materials Science
    • National Institute of Material Science, 1-1 Namiki, Tsukuba, Ibaraki 205-0044, Japan
    • National Institute of Materials Science, Japan

  • Kenji Watanabe

    • National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305 0044, Japan
    • Advanced Materials Laboratory, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Materials Science
    • Advanced Materials Laboratory, National Institute for Materials Science, , 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Material Science, 1-1 Namiki, Tsukuba 305-0044
    • National Institute of Materials Science
    • NIMS, Japan
    • Advanced Materials Laboratory, NIMS
    • National Institute for Materials Science, Tsukuba, Japan
    • National Institute for Materials Science, Japan
    • Advanced Materials Laboratory, National Institute for Materials Science
    • National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0044, Japan
    • National Institute for Materials Science (NIMS)
    • NIMS Tsukuba
    • National Institute for Materials Science (Japan)
    • NIMS
    • National Institute for Material Science
    • National Institute for Materials Science, 1-1 Namiki, Tsukuba, Japan
    • National Institute for Materials Science , Japan
    • National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan.
    • Advanced Materials Laboratory, National Institute for Materials Science, Japan
    • Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
    • National Institute for Materials Science, Tsukuba, Ibaraki 305- 0044, Japan
    • National Institute for Material Science - Japan
    • National Institute for Materials Science, Namiki Tsukuba Ibaraki, Japan
    • National Institute of Material Science
    • Advanced Material Lab, NIMS
    • Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Japan
    • Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
    • National Institute for Materials Science, Tsukuba
    • 1-1 Namiki, Tsukuba, National Institute for Materials Science
    • NIMS/Tsukuba
    • National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044 Japan
    • National Institute for Materials Science, Namiki, 305-0044, Japan
    • National Institute for Material Science, Japan
    • Advanced Materials Laboratory, NIMS, Japan
    • Columbia University
    • Advanced Materials Labaratory, National Institute for Materials Science
    • National Institute of Material Science, 1-1 Namiki, Tsukuba, Ibaraki 205-0044, Japan
    • National Institute of Materials Science, Japan

  • André Santarosa Ferlauto

    • Centro de Engenharia, Modelagem e Ciências Sociais Aplicadas, Universidade Federal do ABC, 09210580, Brasil

  • Angelo Malaquias de Souza

    • Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, 30123-970, Brasil

  • Leonardo Cristiano Campos

    • Departamento de Fisica, UFMG, Brazil
    • Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, 30123-970, Brasil

  • Rodrigo Gribel Lacerda

    • Universidade Federal de Minas Gerais
    • Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, 30123-970, Brasil