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Metallic contact between MoS2 and Ni via Au nanoglue

  • Shi, Xinying Nano and Molecular Systems Research Unit University of Oulu, Finland
  • Posysaev, Sergei Nano and Molecular Systems Research Unit University of Oulu, Finland
  • Huttula, Marko Nano and Molecular Systems Research Unit University of Oulu, Finland
  • Pankratov, Vladimir Nano and Molecular Systems Research Unit University of Oulu, Finland
  • Hoszowska, Joanna Department of Physics, University of Fribourg, Switzerland
  • Dousse, Jean-Claude Department of Physics, University of Fribourg, Switzerland
  • Zeeshan, Faisal Department of Physics, University of Fribourg, Switzerland
  • Niu, Yuran Lund University, Sweden
  • Zakharov, Alexei Lund University, Sweden
  • Li, Taohai College of Chemistry, Xiangtan University, China
  • Miroshnichenko, Olga Nano and Molecular Systems Research Unit University of Oulu, Finland
  • Zhang, Meng Department of Physics, East China University of Science and Technology, Shanghai, China
  • Wang, Xiao Department of Physics, East China University of Science and Technology, Shanghai, China
  • Huang, Zhongjia School of Mechanical and Automotive Engineering, Anhui Polytechnic University, Wuhu, China
  • Saukko, Sami Nano and Molecular Systems Research Unit University of Oulu, Finland
  • González, Diego López Department of Applied Physics, Aalto University School of Science, Aalto, Finland
  • Dijken, Sebastiaan van Department of Applied Physics, Aalto University School of Science, Aalto, Finland
  • Alatalo, Matti Nano and Molecular Systems Research Unit University of Oulu, Finland
  • Cao, Wei Nano and Molecular Systems Research Unit University of Oulu, Finland
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    01.05.2018
Published in:
  • Small. - 2018, vol. 14, no. 22, p. 1704526
English A critical factor for electronics based on inorganic layered crystals stems from the electrical contact mode between the semiconducting crystals and the metal counterparts in the electric circuit. Here, a materials tailoring strategy via nanocomposite decoration is carried out to reach metallic contact between MoS2 matrix and transition metal nanoparticles. Nickel nanoparticles (NiNPs) are successfully joined to the sides of a layered MoS2 crystal through gold nanobuffers, forming semiconducting and magnetic NiNPs@MoS2 complexes. The intrinsic semiconducting property of MoS2 remains unchanged, and it can be lowered to only few layers. Chemical bonding of the Ni to the MoS2 host is verified by synchrotron radiation based photoemission electron microscopy, and further proved by first- principles calculations. Following the system's band alignment, new electron migration channels between metal and the semiconducting side contribute to the metallic contact mechanism, while semiconductor–metal heterojunctions enhance the photocatalytic ability.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/307190
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