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나노 구조 물리 연구단
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Exfoliation of Transition Metal Dichalcogenides by a High-Power Femtosecond Laser

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Title
Exfoliation of Transition Metal Dichalcogenides by a High-Power Femtosecond Laser
Author(s)
Sung-Jin An; Yong Hwan Kim; Chanwoo Lee; DaeYoung Park; Mun Seok Jeong
Publication Date
2018-08
Journal
SCIENTIFIC REPORTS, v.8, no., pp.12957 -
Publisher
NATURE PUBLISHING GROUP
Abstract
Thin layer two-dimensional (2-D) transition metal dichalcogenide (TMD) materials have distinctive optoelectronic properties. Therefore, several methods including mechanical exfoliation, chemical vapor deposition, and liquid-phase exfoliation have been attempted to obtain uniform TMDs. However, such methods do not easily produce high-quality few-layer TMDs with high speed. Here, we report the successful fabrication of few-layer TMD materials by femtosecond laser irradiation. It shows that TMD samples can be exfoliated from bulk to similar to 3 layers. This method is much faster and simpler than other exfoliation methods. The size and number of the layers were confirmed by atomic force microscopy, scanning electron microscopy, Raman spectroscopy, and photoluminescence experiments. It is expected to be used for the mass production of thin 2-D TMD materials.© The Author(s) 2018
URI
https://pr.ibs.re.kr/handle/8788114/5225
ISSN
2045-2322
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
Files in This Item:
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