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Metallic Contact between MoS2 and Ni via Au Nanoglue

Shi, Xinying; Posysaev, Sergei; Huttula, Marko; Pankratov, Vladimir; Hoszowska, Joanna; Dousse, Jean Claude; Zeeshan, Faisal; Niu, Yuran LU ; Zakharov, Alexei LU and Li, Taohai, et al. (2018) In Small 14(22).
Abstract

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... (More)

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.

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organization
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type
Contribution to journal
publication status
published
subject
keywords
First-principles calculations, Inorganic layered crystals, Metal-semiconductor contact, Synchrotron radiation
in
Small
volume
14
issue
22
publisher
John Wiley & Sons
external identifiers
  • scopus:85045958700
ISSN
1613-6810
DOI
10.1002/smll.201704526
language
English
LU publication?
yes
id
53822182-7aca-4151-a049-1acd1786505d
date added to LUP
2018-05-07 09:54:01
date last changed
2019-01-14 17:59:12
@article{53822182-7aca-4151-a049-1acd1786505d,
  abstract     = {<p>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 MoS<sub>2</sub> matrix and transition metal nanoparticles. Nickel nanoparticles (NiNPs) are successfully joined to the sides of a layered MoS<sub>2</sub> crystal through gold nanobuffers, forming semiconducting and magnetic NiNPs@MoS<sub>2</sub> complexes. The intrinsic semiconducting property of MoS<sub>2</sub> remains unchanged, and it can be lowered to only few layers. Chemical bonding of the Ni to the MoS<sub>2</sub> 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.</p>},
  articleno    = {1704526},
  author       = {Shi, Xinying and Posysaev, Sergei and Huttula, Marko and Pankratov, Vladimir and Hoszowska, Joanna and Dousse, Jean Claude and Zeeshan, Faisal and Niu, Yuran and Zakharov, Alexei and Li, Taohai and Miroshnichenko, Olga and Zhang, Meng and Wang, Xiao and Huang, Zhongjia and Saukko, Sami and González, Diego López and van Dijken, Sebastiaan and Alatalo, Matti and Cao, Wei},
  issn         = {1613-6810},
  keyword      = {First-principles calculations,Inorganic layered crystals,Metal-semiconductor contact,Synchrotron radiation},
  language     = {eng},
  month        = {04},
  number       = {22},
  publisher    = {John Wiley & Sons},
  series       = {Small},
  title        = {Metallic Contact between MoS<sub>2</sub> and Ni via Au Nanoglue},
  url          = {http://dx.doi.org/10.1002/smll.201704526},
  volume       = {14},
  year         = {2018},
}