Effect of annealing temperature on electrical properties of poly (methyl methacrylate): titanium dioxide nanocomposite films using spin coating deposition technique

• Main Authors: IOP, Habibah, Z (Author), Herman, SH (Author), Ismail, LN (Author), Rusop, M (Author)
• Format: Article
• Language: English
• Online Access: View Fulltext in Publisher

 Nanocomposite poly (methyl methacrylate) : titanium dioxide (PMMA :TiO2) film were deposited on glass substrate. The effect of annealing temperature, especially on electrical, dielectric and the morphological properties of the thin films were investigated by current-voltage (I-V) measurement, impedance spectroscopy, and FESEM. The annealing temperature is varies from 120 degrees C, 140 degrees C, 160 degrees C, 180 degrees C and 200 degrees C. The electrical properties results showing when nanocomposite film annealed at 120 degrees C produce the lowest current. Meanwhile, when the annealing temperature increased, the current increased drastically and this indicates the PMMA:TiO2 nanocomposite film are no longer having insulating properties. The dielectric properties also indicate that film annealed at 120 degrees C has the best dielectric properties compared to other temperature. The FESEM results show that as the temperature increased, the PMMA:TiO2 nanocomposite film started to create a phase separation between the PMMA matrix and TiO2 nanoparticles.