Effects of high-energy electron beam irradiation on the structure, composition and morphological properties of graphene nanoplatelet films

Nurul Hidayah Mohamad Nor, and Nur Afira Anuar, and Noor Azrina Talik, and Wan Ahmad Tajuddin Wan Abdullah, and Kritsada Kittimanapun, and Hideki Nakajima, and Narong Chanlek, and Mohd Fakharul Zaman Raja Yahya, and Boon, Tong Goh (2023) Effects of high-energy electron beam irradiation on the structure, composition and morphological properties of graphene nanoplatelet films. Sains Malaysiana, 52 (10). pp. 2995-2970. ISSN 0126-6039

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Official URL: https://www.ukm.my/jsm/english_journals/vol52num10...

Abstract

This work demonstrated the effects of 1.2 GeV high-energy electron beam irradiation on a few-layers of graphene (FLG) and multi-layer graphene (MLG) films grown via an in-house hot wire chemical vapour deposition (HWCVD) system. The FLG and MLG films were grown on highly doped n-type c-Si (100) substrates which were pre-treated using argon plasma (50 W) for 1 min and 10 min, respectively. The as-prepared samples were then irradiated using a 1.2 GeV high-energy electron beam with a dosage of 1.2 × 109 e- /cm2 at atmospheric and room temperature ambient conditions. The effects of the irradiation-mediated defects on the carbon lattice structure of both graphene samples were validated from the decreased sp2 C=C carbon content, and the increase in the adventitious carbon contamination C-O-C content. Raman results showed an elevation of the ID/IG ratio and blue-shift of the 2D and G band peaks for both the irradiated samples, which validated the mediated defects due to the dislocation of carbon atoms in the graphene sheets. The blue-shifted of 2D and G peaks were much more significant in the MLG than FLG which may indicate a better self-reconstructing property for the MLG atomic network, compared to the FLG. The stability of the films against high-energy electron beam irradiation was validated by their conductivity and surface topography. In conclusion, HWCVD grown graphene nanoplatelet films have high potential for graphene-based high-energy charged particle detectors.

Item Type:Article
Keywords:Graphene; High-energy electron beam; HWCVD; Nanoplatelets; Radiation tolerance
Journal:Sains Malaysiana
ID Code:23338
Deposited By: Siti Zarenah Jasin
Deposited On:03 Apr 2024 03:55
Last Modified:04 Apr 2024 02:31

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