Width-dependent continuous growth of atomically thin quantum nanoribbons from nanoalloy seeds in chalcogen vapor

Nanoribbons (NRs) of atomic layer transition metal dichalcogenides (TMDs) can boost the rapidly emerging field of quantum materials owing to their width-dependent phases and electronic properties. However, the controllable downscaling of width by direct growth and the underlying mechanism remain elu...

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Published in:Nature communications Vol. 15; no. 1; pp. 10080 - 10
Main Authors: Li, Xufan, Wyss, Samuel, Yanev, Emanuil, Li, Qing-Jie, Wu, Shuang, Sun, Yongwen, Unocic, Raymond R., Stage, Joseph, Strasbourg, Matthew, Sassi, Lucas M., Zhu, Yingxin, Li, Ju, Yang, Yang, Hone, James, Borys, Nicholas, Schuck, P. James, Harutyunyan, Avetik R.
Format: Journal Article
Language:English
Published: London Nature Publishing Group UK 21.11.2024
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Subjects:
140/133
147/135
147/137
147/3
639/301/357/1018
639/925/357/551
Chalcogenides
Chemical vapor deposition
Controllability
Crystal growth
Emission
Emissions
Engineering
Fourier transforms
Graphene
Humanities and Social Sciences
Materials science
Microscopy
multidisciplinary
Nanoalloys
Nanoparticles
Nanoribbons
Nanowires
Optoelectronics
Photoluminescence
Photons
Purity
Science
Science (multidisciplinary)
Seeds
Single crystals
Spectrum analysis
Supersaturation
Transition metal alloys
Transition metal compounds
Vapors
ISSN:2041-1723, 2041-1723
Online Access:Get full text
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Summary:Nanoribbons (NRs) of atomic layer transition metal dichalcogenides (TMDs) can boost the rapidly emerging field of quantum materials owing to their width-dependent phases and electronic properties. However, the controllable downscaling of width by direct growth and the underlying mechanism remain elusive. Here, we demonstrate the vapor-liquid-solid growth of single crystal of single layer NRs of a series of TMDs (MeX 2 : Me = Mo, W; X = S, Se) under chalcogen vapor atmosphere, seeded by pre-deposited and respective transition metal-alloyed nanoparticles that also control the NR width. We find linear dependence of growth rate on supersaturation, known as a criterion for continues growth mechanism, which decreases with decreasing of NR width driven by the Gibbs-Thomson effect. The NRs show width-dependent photoluminescence and strain-induced quantum emission signatures with up to ≈ 90% purity of single photons. We propose the path and underlying mechanism for width-controllable growth of TMD NRs for applications in quantum optoelectronics. Size control in quantum materials by direct growth is still difficult to achieve. Here, the authors present the width-dependent growth of single-layer nanoribbons of transition metal dichalcogenides from nanoalloy seeds, achieving strain-induced quantum emission with a purity of up to 90 % for single photons.
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ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-024-54413-9