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https://doi.org/10.1038/s41598-019-39605-4
Title: | WS 2 Nano-petals and Nano-bristles Supported on Carbon Nanotubes for Electron Emission Applications | Authors: | Loh, T.A.J. Ooi, Y.J. Chua, D.H.C. |
Issue Date: | 2019 | Publisher: | Nature Publishing Group | Citation: | Loh, T.A.J., Ooi, Y.J., Chua, D.H.C. (2019). WS 2 Nano-petals and Nano-bristles Supported on Carbon Nanotubes for Electron Emission Applications. Scientific Reports 9 (1) : 3672. ScholarBank@NUS Repository. https://doi.org/10.1038/s41598-019-39605-4 | Rights: | Attribution 4.0 International | Abstract: | Atomically thin WS 2 nano-petals and nano-bristles were synthesized on vertically aligned carbon nanotubes (CNT) via magnetron sputtering at room temperature. The formation of the nano-petal morphology requires reaching a critical threshold in sputter deposition time, below which an amorphous film of WO 3 is obtained instead. Increasing the deposition time past a second threshold results in a change to the nano-bristle morphology. Both WS 2 nano-petals and nano-bristles were able to significantly enhance the electron emission of properties. The lowest turn-on voltage measured was to be 295 V and 355 V for the nano-petals and nano-bristles respectively, versus 425 V for pristine CNTs. The variation in the turn-on voltage is due to the electrical contacts at the interface between the different WS 2 structures, which induces current saturation at high emission currents. These results demonstrate that 2D WS 2 layers can be synthesized without the need for chemical routes and high growth temperatures if an appropriate template is employed. © 2019, The Author(s). | Source Title: | Scientific Reports | URI: | https://scholarbank.nus.edu.sg/handle/10635/212221 | ISSN: | 20452322 | DOI: | 10.1038/s41598-019-39605-4 | Rights: | Attribution 4.0 International |
Appears in Collections: | Staff Publications Elements |
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