Organic Dielectric Films for Flexible Transistors as Gas Sensors

García, D. C., Izquierdo, J. E. E., Nogueira, V. A. M., Oliveira, J. D. S., Cavallari, M. R., Quivy A. A. and Fonseca, F. J.
Journal of Integrated Circuits and Systems 15(2), 1 (2020)

DOI : 10.29292/jics.v15i2.170

Abstract

Cross-linked polymer films with poly(melamine-co-formaldehyde) methylated (PMF) were investigated in order to integrate flexible organic transistor-based sensors. By blending poly(methyl methacrylate) (PMMA) with PMF, solutions showed reduced viscosity for wet processing. Thin-films from poly (4-vinylphenol) (PVP) blends with PMF featured lower RMS roughness (0.37 nm) and higher dielectric constant (k ~ 3.7 – 5.7). The presence of enhanced cross-linking at higher PMF concentrations was confirmed for both polymers from chemical resistance essays and structural characterization.