Raman and TEM characterization of 2D layered MoS2 crystals grown on non-metal surfaces by friction-induced synthesis

Tadao Tanabe; Junya Osaki; Makoto Miyajima; Kazuyuki Kitamura; Yutaka Oyama

doi:10.1016/j.apsusc.2021.150016

Raman and TEM characterization of 2D layered MoS₂ crystals grown on non-metal surfaces by friction-induced synthesis

Tadao Tanabe, Junya Osaki, Makoto Miyajima, Kazuyuki Kitamura, Yutaka Oyama

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

7 Citations (Scopus)

Abstract

Thin films of crystalline molybdenum disulfide (MoS₂) are grown by friction-induced synthesis at the interface between a n⁺-Si(1 0 0) substrate and a synthetic quartz ball. The thin films are formed as a result of the tribochemical reaction of molybdenum dithiocarbamates (MoDTC) in synthetic oil under sliding friction conditions. Raman mapping shows the width of the grown MoS₂ film to be about 7 µm, and the difference between the Raman frequencies of the E¹_2g and A_1g modes indicate that there are more than 6 monolayers in the MoS₂ film. A TEM image indicates that a layer-by-layer structure is formed at the top surface of the stacked films. These results show that it is possible to fabricate a 2D layered MoS₂ film on a non-metal surface using this friction induced crystal growth method.

Original language	English
Article number	150016
Journal	Applied Surface Science
Volume	561
DOIs	https://doi.org/10.1016/j.apsusc.2021.150016
Publication status	Published - 2021 Sept 30

Keywords

Friction-induced synthesis
MoS
Tribo chemistry
Tribology

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces, Coatings and Films
Surfaces and Interfaces

Access to Document

10.1016/j.apsusc.2021.150016

Cite this

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title = "Raman and TEM characterization of 2D layered MoS2 crystals grown on non-metal surfaces by friction-induced synthesis",

abstract = "Thin films of crystalline molybdenum disulfide (MoS2) are grown by friction-induced synthesis at the interface between a n+-Si(1 0 0) substrate and a synthetic quartz ball. The thin films are formed as a result of the tribochemical reaction of molybdenum dithiocarbamates (MoDTC) in synthetic oil under sliding friction conditions. Raman mapping shows the width of the grown MoS2 film to be about 7 µm, and the difference between the Raman frequencies of the E12g and A1g modes indicate that there are more than 6 monolayers in the MoS2 film. A TEM image indicates that a layer-by-layer structure is formed at the top surface of the stacked films. These results show that it is possible to fabricate a 2D layered MoS2 film on a non-metal surface using this friction induced crystal growth method.",

keywords = "Friction-induced synthesis, MoS, Tribo chemistry, Tribology",

author = "Tadao Tanabe and Junya Osaki and Makoto Miyajima and Kazuyuki Kitamura and Yutaka Oyama",

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year = "2021",

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doi = "10.1016/j.apsusc.2021.150016",

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T1 - Raman and TEM characterization of 2D layered MoS2 crystals grown on non-metal surfaces by friction-induced synthesis

AU - Tanabe, Tadao

AU - Osaki, Junya

AU - Miyajima, Makoto

AU - Kitamura, Kazuyuki

AU - Oyama, Yutaka

PY - 2021/9/30

Y1 - 2021/9/30

N2 - Thin films of crystalline molybdenum disulfide (MoS2) are grown by friction-induced synthesis at the interface between a n+-Si(1 0 0) substrate and a synthetic quartz ball. The thin films are formed as a result of the tribochemical reaction of molybdenum dithiocarbamates (MoDTC) in synthetic oil under sliding friction conditions. Raman mapping shows the width of the grown MoS2 film to be about 7 µm, and the difference between the Raman frequencies of the E12g and A1g modes indicate that there are more than 6 monolayers in the MoS2 film. A TEM image indicates that a layer-by-layer structure is formed at the top surface of the stacked films. These results show that it is possible to fabricate a 2D layered MoS2 film on a non-metal surface using this friction induced crystal growth method.

AB - Thin films of crystalline molybdenum disulfide (MoS2) are grown by friction-induced synthesis at the interface between a n+-Si(1 0 0) substrate and a synthetic quartz ball. The thin films are formed as a result of the tribochemical reaction of molybdenum dithiocarbamates (MoDTC) in synthetic oil under sliding friction conditions. Raman mapping shows the width of the grown MoS2 film to be about 7 µm, and the difference between the Raman frequencies of the E12g and A1g modes indicate that there are more than 6 monolayers in the MoS2 film. A TEM image indicates that a layer-by-layer structure is formed at the top surface of the stacked films. These results show that it is possible to fabricate a 2D layered MoS2 film on a non-metal surface using this friction induced crystal growth method.

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