Article 1D Crystallographic Etching of Few‐Layer WS2

Shisheng Li ORCID ; Yung‐Chang Lin ORCID ; Yiling Chiew ; Yunyun Dai ; Zixuan Ning ; Yaming Zhang ; Hideaki Nakajima ; Hong En Lim ; Jing Wu ; Yasuhisa Neitoh ; Toshiya Okazaki ; Yang Sun ; Zhipei Sun ; Kazu Suenaga ; Yoshiki Sakuma SAMURAI ORCID (National Institute for Materials ScienceROR) ; Kazuhito Tsukagoshi SAMURAI ORCID (National Institute for Materials ScienceROR) ; Takaaki Taniguchi SAMURAI ORCID (National Institute for Materials ScienceROR)

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Shisheng Li, Yung‐Chang Lin, Yiling Chiew, Yunyun Dai, Zixuan Ning, Yaming Zhang, Hideaki Nakajima, Hong En Lim, Jing Wu, Yasuhisa Neitoh, Toshiya Okazaki, Yang Sun, Zhipei Sun, Kazu Suenaga, Yoshiki Sakuma, Kazuhito Tsukagoshi, Takaaki Taniguchi. 1D Crystallographic Etching of Few‐Layer WS2. Advanced Functional Materials. 2024, 34 (46), 2405665. https://doi.org/10.1002/adfm.202405665
SAMURAI

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(abstract)

Layer number-dependent band structures and symmetry are vital for the electrical and optical characteristics of 2D transition metal dichalcogenides (TMDCs). Harvesting 2D TMDCs with tunable thickness and properties can be achieved through top-down etching and bottom-up growth strategies. In this study, a pioneering technique that utilizes the migration of in situ generated Na-W-S-O droplets to etch out 1D nanotrenches in few-layer WS2 is reported. 1D WS2 nanotrenches are successfully fabricated on the optically inert bilayer WS2, showing pronounced photoluminescence and second harmonic generation signals. Additionally, the modulation of inkjet-printed Na2WO4-Na2SO4 particles to switch between the etching and growth modes by manipulating the sulfur supply is demonstrated. This versatile approach enables the creation of 1D nanochannels on 2D TMDCs. The research presents exciting prospects for the top-down and bottom-up fabrication of 1D-2D mixed-dimensional TMDC nanostructures, expanding their use for electronic and optoelectronic applications.

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  • In Copyright

    This is the pre-peer reviewed version of the following article:1D Crystallographic Etching of Few-Layer WS2, which has been published in final form at https://doi.org/10.1002/adfm.202405665. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.

Keyword: 1D nanotrenches, etching, photoluminescence, second harmonic generation, transition metal dichalcogenides

Date published: 2024-10-03

Publisher: Wiley

Journal:

  • Advanced Functional Materials (ISSN: 1616301X) vol. 34 issue. 46 2405665

Funding:

  • JSPS-KAKENHI (21K04839
  • JSPS-KAKENHI 22H05478
  • JST-CREST program JPMJCR20B1
  • JST-CREST program JPMJCR20B5
  • JST-CREST program JPMJCR1993
  • JSPS JSPS A3 Foresight Program
  • JSPS-KAKENHI 23K04530
  • Hurata Murata Science Foundation

Manuscript type: Author's version (Submitted manuscript)

MDR DOI: https://doi.org/10.48505/nims.4997

First published URL: https://doi.org/10.1002/adfm.202405665

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Updated at: 2024-11-20 16:30:24 +0900

Published on MDR: 2024-11-20 18:39:53 +0900

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