Tema: “Facile Fabrication of Reduced Graphene Oxide (rGO) and Its Application”

Dr. rer. nat. Akfiny Hasdi Aimon
KK Fisika Material Elektronik
FMIPA Institut Teknologi Bandung

Senin, 8 Maret 2021, 11.00 WIB, via Zoom

Link Zoom: https://bit.ly/SeminarFisikaITB

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Abstrak:

An alternative way to fabricate reduced graphene oxide-based transparent conductive films (rGO based TCF) using microwave assisted irradiation is introduced. This modified method offers lower cost, more efficiency and more convenience in thin-film fabrication. A high mode of conventional microwave irradiation was used in this research, with time variation at 30 and 60 minutes. For comparison, an unirradiated sample was prepared to see the direct effect of microwave radiation on the properties of the samples. The electrical and optical properties of the samples were characterized by sheet resistance measurement and UV-Vis spectrometry. Scanning electron microscopy was used to observe the morphology of the rGO thin film on the substrate. Microwave radiation at 30 minutes gave the best combination for electrical and optical properties, with the sheet resistance of 21.97 kΩ/sq and 30.37% transmittance, respectively. X-ray photoemission spectroscopy results confirmed the increased of C-C bonding and reduced C-O and C=O bonding in the sample subjected to 30 min of microwave radiation. This study provides a different perspective on the fabrication of rGO based TCF.
Keywords: Transparence Conductive Film, Reduced Graphene Oxide, microwave irradiation; X-ray Photoemission Spectroscopy; thermal reduction.