Reaction-Time-Dependent Opto-Electrical Properties of Graphene Oxide
Muhammad Kashif,
Norah Salem Alsaiari,
Erdawaty Jaafar,
Foo Wah Low,
Cheen Sean Oon,
Siti Kudnei Sahari,
Nayef S. Almuaikel
Affiliations
Muhammad Kashif
School of Electrical and Information Engineering, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China
Norah Salem Alsaiari
Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia
Erdawaty Jaafar
Faculty of Engineering, Universiti Malaysia Sarawak (UNIMAS), Kota Samarahan 94300, Sarawak, Malaysia
Foo Wah Low
Department of Electrical & Electronic Engineering, Lee Kong Chian Faculty of Engineering & Science, Universiti Tunku Abdul Rahman, Bandar Sungai Long, Kajang 43000, Selangor, Malaysia
Cheen Sean Oon
School of Engineering, Monash University, Bandar Sunway 47500, Malaysia
Siti Kudnei Sahari
Faculty of Engineering, Universiti Malaysia Sarawak (UNIMAS), Kota Samarahan 94300, Sarawak, Malaysia
Nayef S. Almuaikel
Chemistry Department, College of Science, Jouf University, Skaka P.O. Box 2014, Aljouf, Saudi Arabia
The reaction-time-dependent synthesis of graphene oxide (GO) was carried out using a modified Hummer’s method. The drop-casting method was used to coat GO films on a glass substrate. Various techniques, including scanning electron microscopy, X-ray diffraction, UV–Vis spectroscopy (UV–Vis), Fourier transform infrared spectroscopy, and current–voltage characteristics, were performed to obtain the morphological, structural, optical, and electrical properties of GO. Morphological structural observations revealed that more oxygen functional groups were present as the reaction time increased from 24 to 96 h, which was confirmed by the optical properties of GO thin films. The resistivity of the as-deposited films increased from 9.74 × 106 to 26.85 × 106 Ω·cm as the reaction time increased. The optimized reaction time with a resistivity of 12.13 × 106 Ω·cm was 48 h, as demonstrated by morphological and optical data.
