Laser irradiation induced structural transformation in layered transition metal trichalcogenide nanoflakes

Huifeng Zhang; Xiong Tu; Ziyu Wu; Junqing Guo; Linfeng Fei; Xiaxia Liao; Jiaren Yuan; Siyuan Wan; Ya-Qing Bie; Yangbo Zhou

iScience (Oct 2023)

Laser irradiation induced structural transformation in layered transition metal trichalcogenide nanoflakes

Huifeng Zhang,
Xiong Tu,
Ziyu Wu,
Junqing Guo,
Linfeng Fei,
Xiaxia Liao,
Jiaren Yuan,
Siyuan Wan,
Ya-Qing Bie,
Yangbo Zhou

Affiliations

Huifeng Zhang: Department of Materials Science, School of Physics and Materials Science, Nanchang University, Nanchang, Jiangxi 330031, P.R. China; Jiangxi Key Laboratory for Two-Dimensional Materials, Nanchang University, Nanchang, Jiangxi 330031, P.R. China
Xiong Tu: Department of Materials Science, School of Physics and Materials Science, Nanchang University, Nanchang, Jiangxi 330031, P.R. China; Jiangxi Key Laboratory for Two-Dimensional Materials, Nanchang University, Nanchang, Jiangxi 330031, P.R. China
Ziyu Wu: Department of Materials Science, School of Physics and Materials Science, Nanchang University, Nanchang, Jiangxi 330031, P.R. China; Jiangxi Key Laboratory for Two-Dimensional Materials, Nanchang University, Nanchang, Jiangxi 330031, P.R. China
Junqing Guo: Department of Materials Science, School of Physics and Materials Science, Nanchang University, Nanchang, Jiangxi 330031, P.R. China; Jiangxi Key Laboratory for Two-Dimensional Materials, Nanchang University, Nanchang, Jiangxi 330031, P.R. China
Linfeng Fei: Department of Materials Science, School of Physics and Materials Science, Nanchang University, Nanchang, Jiangxi 330031, P.R. China; Jiangxi Key Laboratory for Two-Dimensional Materials, Nanchang University, Nanchang, Jiangxi 330031, P.R. China
Xiaxia Liao: Department of Materials Science, School of Physics and Materials Science, Nanchang University, Nanchang, Jiangxi 330031, P.R. China; Jiangxi Key Laboratory for Two-Dimensional Materials, Nanchang University, Nanchang, Jiangxi 330031, P.R. China
Jiaren Yuan: Department of Materials Science, School of Physics and Materials Science, Nanchang University, Nanchang, Jiangxi 330031, P.R. China; Jiangxi Key Laboratory for Two-Dimensional Materials, Nanchang University, Nanchang, Jiangxi 330031, P.R. China
Siyuan Wan: Department of Materials Science, School of Physics and Materials Science, Nanchang University, Nanchang, Jiangxi 330031, P.R. China; Jiangxi Key Laboratory for Two-Dimensional Materials, Nanchang University, Nanchang, Jiangxi 330031, P.R. China
Ya-Qing Bie: State Key Lab of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, Sun Yat-sen University, Guangzhou 510275, P.R. China; Corresponding author
Yangbo Zhou: Department of Materials Science, School of Physics and Materials Science, Nanchang University, Nanchang, Jiangxi 330031, P.R. China; Jiangxi Key Laboratory for Two-Dimensional Materials, Nanchang University, Nanchang, Jiangxi 330031, P.R. China; Corresponding author

Journal volume & issue: Vol. 26, no. 10
p. 107895

Abstract

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Summary: Laser irradiation is a powerful tool in inducing changes in lattice structures and properties of two-dimensional (2D) materials through processes such as heating, bleaching, catalysis, etc. However, the underlying mechanisms of such transformations vary dramatically in different 2D materials. Here, we report the structural transformation of layered titanium trisulfide (TiS3) to titanium disulfide (TiS2) after irradiation. We systematically characterized the dependence of the transformation on laser power, flake thickness, irradiation time, and vacuum conditions using microscopic and spectroscopic methods. The underlying mechanism is confirmed as the heat-induced materials decomposition, a process that also occurs in many other transition metal trichalcogenide materials. Furthermore, we demonstrate that this spatial-resolved method also enables the creation of in-plane TiS3-TiS2 heterostructures. Our study identifies a new family of 2D materials that undergo a structural transformation after laser irradiation and enriches the methods available for developing new prototypes of low-dimensional devices in the future.

Published in iScience

ISSN: 2589-0042 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Science
Website: http://www.cell.com/iscience/home

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