Study of Morphological, Optical and Electrical Properties of Graphene Oxide Thin Film Relative to the Reaction Time of Synthesis
In this work, graphene oxide (GO) was synthesized by treating graphite powder with potassium permanganate (KMnO4) and a mixture of concentrated sulphuric acid (H2SO4)/ phosphoric acid (H3PO4) at various reaction time. The GO thin film is coated on a glass substrate by using drop casting method....
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | en |
| Published: |
Universiti Teknikal Malaysia Melaka
2018
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| Subjects: | |
| Online Access: | http://ir.unimas.my/id/eprint/25530/3/Study.pdf http://ir.unimas.my/id/eprint/25530/ http://journal.utem.edu.my/index.php/jtec/index |
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| Summary: | In this work, graphene oxide (GO) was synthesized
by treating graphite powder with potassium permanganate
(KMnO4) and a mixture of concentrated sulphuric acid (H2SO4)/
phosphoric acid (H3PO4) at various reaction time. The GO thin
film is coated on a glass substrate by using drop casting method.
The morphological, optical and electrical properties of GO thin
film were carried out by using scanning electron microscopy
(SEM), UV-Vis spectroscopy (UV-Vis), Fourier Transform
Infrared Spectroscopy (FTIR), and current-voltage (I-V)
characteristic. The morphological study of GO shows that more
oxygen functional groups were observed as the reaction time
increases from 24h to 96h and is justified from the optical
properties of GO thin films. The optical and morphological
properties of GO thin film affects the electrical properties as the
resistivity increase from 9.33 x 106Ω.cm to 26.15 x 106Ω.cm.
Morphological and optical data confirms that 48h is the
optimized reaction time having a resistivity of 12.30 x 106Ω.cm. |
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