Dielectric Properties of PMMA-SiO2 Hybrid Films


Article Preview

Organic-inorganic hybrid films were synthesized by a modified sol-gel process. PMMA-SiO2 films were prepared using methylmethacrylate (MMA), tetraethil-orthosilicate (TEOS) as silicon dioxide source, and 3-trimetoxi-silil-propil-methacrylate (TMSPM) as coupling agent. FTIR measurements were performed on the hybrid films to confirm the presence of PMMA-SiO2 bonding. In addition, metal-insulator-metal (MIM) devices were fabricated to study the dielectric constant of the films as function of frequency (1 KHz to 1 MHz). Electrical results show a weak trend of the dielectric constant of the hybrid films with MMA molar ratio. More importantly, the PMMA-SiO2 hybrid films showed a higher dielectric constant than SiO2 and PMMA layers, which is likely due to the presence of additional C-O-C bond.



Edited by:

Arturo Ponce and Darío Bueno




M.D. Morales-Acosta et al., "Dielectric Properties of PMMA-SiO2 Hybrid Films", Materials Science Forum, Vol. 644, pp. 25-28, 2010

Online since:

March 2010




[1] C. Sanchez: J. Mater. Chem. Vol. 15 (2005) p.3557.

[2] C. Sanchez, B. Julián, P. Belleville, M. Popall: J. Mater. Chem. Vol. 15 (2005) p.3559.

[3] Sh. Al-Kandary, A.A.M. Ali, Z. Ahmad: J. Mat. Sci. Vol. 41 (2006) p.2907.

[4] J.L. Almaral-Sánchez, E. Rubio E, A. Mendoza-Galván and R. Ramírez-Bon: J Phys. Chem. Solids Vol. 600 (2005) p.1660.

[5] E. Rubio, J. Almaral, R. Ramirez-Bon, V. Castano, V. Rodriguez: Opt. Mat. 27 (2005) p.1266.

[6] Moonkyong Na, Shi-Woo Rhee: Organic Electronic Vol. 7 (2006) pp.205-212. 1 10 100 1000 6 7 8 9 10 TEOS: TMSPM (1. 0 : 0. 25) MMA : 0. 25 MMA : 1. 0 MMA : 2. 0 Dielectric Constant Frequency (KHz).