Low-temperature growth of graphene nanoplatelets by hot-wire chemical vapour deposition

Anuar, Nur Afira binti and Nor, Nurul Hidayah Mohamad and Awang, Rozidawati binti and Nakajima, Hideki and Tunmee, Sarayut and Tripathi, Manoj and Dalton, Alan and Goh, Boon Tong (2021) Low-temperature growth of graphene nanoplatelets by hot-wire chemical vapour deposition. Surface and Coatings Technology, 411. ISSN 0257-8972, DOI https://doi.org/10.1016/j.surfcoat.2021.126995.

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With the increasing demand for large-area graphene due to its versatility, there is an imminent requirement for scalable, low-temperature, and high yield growth procedures. In this study, the fabrication of large-area graphene nanoplatelets directly grown on tungsten (W) nanoparticles coated c-Si and quartz substrates by hot-wire chemical vapour deposition was demonstrated. A large area of single and bilayer graphene grown over W adatoms via controlled argon (Ar) plasma treatment varied from 0.5 to 10 min. The finest quality of continuous graphene layer up to an area of 2.56 x 10(4) mu m(2) was prepared at the optimised condition of 1 min, and verified through transmission electron microscopy in conjunction with energy dispersive X-ray, atomic force microscopy, and Raman spectroscopy. The prepared thin film of the carbon layer has excellent optical transparency (> 70%) and lower sheet resistance up to 718.3 Omega/sq. A detailed growth mechanism is proposed for the nucleation of graphene nanoplatelets under the influence of Ar plasma treatment on W nanoparticles.

Item Type: Article
Funders: Research University Faculty Programme (University of Malaya) [Grant No: GPF034B-2018], Newton Advanced Fellowship [Grant No: IF003-2017@NA16010 & RK006-2019], University of Sussex strategic development fund
Uncontrolled Keywords: HWCVD; Graphene; Nanoplatelets; Raman mapping; Tungsten nanoparticles
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Faculty of Science
Depositing User: Ms Zaharah Ramly
Date Deposited: 22 Jun 2022 04:47
Last Modified: 22 Jun 2022 04:47
URI: http://eprints.um.edu.my/id/eprint/34026

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