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

• Published in: IOP conference series. Materials Science and Engineering Vol. 64; no. 1; p. 12051
• Main Authors: Ismail, L N, Habibah, Z, Herman, S H, Rusop, M
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 22.08.2014
• Subjects: Annealing; Dielectric properties; Electrical properties; Glass substrates; Nanocomposites; Nanoparticles; Phase separation; Polymethyl methacrylate; Spin coating; Thin films; Titanium; Titanium dioxide
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/64/1/012051

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°C, 140°C, 160°C, 180°C and 200°C. The electrical properties results showing when nanocomposite film annealed at '20°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°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.