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Mediator-assisted synthesis of WS2 with ultrahigh-optoelectronic performance at multi-wafer scale
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Mediator-assisted synthesis of WS2 with ultrahigh-optoelectronic performance at multi-wafer scale
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Journal Article
Mediator-assisted synthesis of WS2 with ultrahigh-optoelectronic performance at multi-wafer scale
2022
Overview
The integration of 2D materials into future applications relies on advances in their quality and production. We here report a synthesis method that achieves ultrahigh optoelectronic performance at unprecedented fabrication scales. A mediator-assisted chemical vapor deposition process yields tungsten-disulfide (WS
2
) with near-unity photoluminescence quantum yield, superior photosensitivity and improved environmental stability. This enhancement is due to the decrease in the density of lattice defects and charge traps brought about by the self-regulating nature of the growth process. This robustness in the presence of precursor variability enables the high-throughput growth in atomically confined stacks and achieves uniform synthesis of single-layer WS
2
on dozens of closely packed wafers. Our approach enhances the scientific and commercial potential of 2D materials as demonstrated in producing large-scale arrays of record-breaking optoelectronic devices.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
