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- W4386046944 abstract "Due to their superior optoelectronic properties, monolayer two-dimensional (2D) transition metal dichalcogenides (TMDs) have attracted significant attention for electroluminescent devices. However, challenges in isolating optoelectronically active TMD monolayers using scalable liquid phase exfoliation have precluded electroluminescence in large-area, solution-processed TMD films. Here, we overcome these limitations and demonstrate electroluminescence from molybdenum disulfide (MoS2) nanosheet films by employing a monolayer-rich MoS2 ink produced by electrochemical intercalation and megasonic exfoliation. Characteristic monolayer MoS2 photoluminescence and electroluminescence spectral peaks at 1.88–1.90 eV are observed in megasonicated MoS2 films, with the emission intensity increasing with film thickness over the range 10–70 nm. Furthermore, employing a vertical light-emitting capacitor architecture enables uniform electroluminescence in large-area devices. These results indicate that megasonically exfoliated MoS2 monolayers retain their direct bandgap character in electrically percolating thin films even following multistep solution processing. Overall, this work establishes megasonicated MoS2 inks as an additive manufacturing platform for flexible, patterned, and miniaturized light sources that can likely be expanded to other TMD semiconductors." @default.
- W4386046944 created "2023-08-23" @default.
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- W4386046944 date "2023-08-22" @default.
- W4386046944 modified "2023-10-17" @default.
- W4386046944 title "Electroluminescence from Megasonically Solution-Processed MoS<sub>2</sub> Nanosheet Films" @default.
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- W4386046944 doi "https://doi.org/10.1021/acsnano.3c06034" @default.
- W4386046944 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37606956" @default.
- W4386046944 hasPublicationYear "2023" @default.
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