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Electrical properties of spin coated PMMA for OFETs applications

Electrical properties of spin coated PMMA for OFETs applications,10.1109/ICEDSA.2011.5959074,L. N Ismail,Z. Habibah,M. H Abdullah,S. H Herman,M. Rusop

Electrical properties of spin coated PMMA for OFETs applications  
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Poly (methy-methacrylate) (PMMA) thin films were deposited by sol-gel spin coating method on glass substrates. PMMA powder was dissolved in 60ml Toluene with the concentration of the PMMA in the solution was varied from 30 ~ 120 mg. Besides the PMMA concentration, we also studied the effect of the thin films thickness on the electrical properties. The results for electrical properties showed that there is a difference of the I-V, resistivity, conductivity and the dielectric constant with different thickness. Conductivity of the PMMA thin film was found to ~ 10 -6 Ωcm and continue to decrease as the PMMA concentration increased. Pinholes were identified to be formed on the films with the higher density due to the increasing PMMA concentration.
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