1D Crystallographic Etching of Few-Layer WS2
No Thumbnail Available
Access rights
embargoedAccess
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
Other link related to publication (opens in new window)
Date
2024-11-12
Major/Subject
Mcode
Degree programme
Language
en
Pages
Series
Advanced Functional Materials, Volume 34, issue 46
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.Description
Publisher Copyright: © 2024 Wiley-VCH GmbH.
Keywords
1D nanotrenches, etching, photoluminescence, second harmonic generation, transition metal dichalcogenides
Other note
Citation
Li, S, Lin, Y C, Chiew, Y, Dai, Y, Ning, Z, Zhang, Y, Nakajima, H, Lim, H E, Wu, J, Neitoh, Y, Okazaki, T, Sun, Y, Sun, Z, Suenaga, K, Sakuma, Y, Tsukagoshi, K & Taniguchi, T 2024, ' 1D Crystallographic Etching of Few-Layer WS 2 ', Advanced Functional Materials, vol. 34, no. 46, 2405665 . https://doi.org/10.1002/adfm.202405665