Metallic Contact between MoS2 and Ni via Au Nanoglue

Xinying Shi; Sergei Posysaev; Marko Huttula; Vladimir Pankratov; Joanna Hoszowska; Jean Claude Dousse; Faisal Zeeshan; Yuran Niu; Alexei Zakharov; Taohai Li; Olga Miroshnichenko; Meng Zhang; Xiao Wang; Zhongjia Huang; Sami Saukko; Diego López González; Sebastiaan van Dijken; Matti Alatalo; Wei Cao

doi:10.1002/smll.201704526

Metallic Contact between MoS₂ and Ni via Au Nanoglue

Xinying Shi, Sergei Posysaev, Marko Huttula, Vladimir Pankratov, Joanna Hoszowska, Jean Claude Dousse, Faisal Zeeshan, Yuran Niu, Alexei Zakharov, Taohai Li, Olga Miroshnichenko, Meng Zhang, Xiao Wang, Zhongjia Huang, Sami Saukko, Diego López González, Sebastiaan van Dijken, Matti Alatalo, Wei Cao^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

39 Citations (Scopus)

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 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.

Original language	English
Pages (from-to)	1704526
Journal	Small
Volume	14
Issue number	22
DOIs	https://doi.org/10.1002/smll.201704526
Publication status	Published - 29 Mar 2018
MoE publication type	A1 Journal article-refereed

Keywords

First-principles calculations
Inorganic layered crystals
Metal-semiconductor contact
Synchrotron radiation

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10.1002/smll.201704526

http://orca.cf.ac.uk/id/eprint/111360

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Shi, X., Posysaev, S., Huttula, M., Pankratov, V., Hoszowska, J., Dousse, J. C., Zeeshan, F., Niu, Y., Zakharov, A., Li, T., Miroshnichenko, O., Zhang, M., Wang, X., Huang, Z., Saukko, S., González, D. L., van Dijken, S., Alatalo, M., & Cao, W. (2018). Metallic Contact between MoS₂ and Ni via Au Nanoglue. Small, 14(22), 1704526. https://doi.org/10.1002/smll.201704526

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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 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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AU - Dousse, Jean Claude

AU - Zeeshan, Faisal

AU - Niu, Yuran

AU - Zakharov, Alexei

AU - Li, Taohai

AU - Miroshnichenko, Olga

AU - Zhang, Meng

AU - Wang, Xiao

AU - Huang, Zhongjia

AU - Saukko, Sami

AU - González, Diego López

AU - van Dijken, Sebastiaan

AU - Alatalo, Matti

AU - Cao, Wei

PY - 2018/3/29

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N2 - 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.

AB - 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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Metallic Contact between MoS₂ and Ni via Au Nanoglue

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