Organic Dielectric Films for Flexible Transistors as Gas Sensors

  • Dennis Cabrera García Escola Politécnica da Universidade de São Paulo (EPUSP) - São Paulo, Brazil
  • José Enrique Eirez Izquierdo Escola Politécnica da Universidade de São Paulo (EPUSP) - São Paulo, Brazil
  • Vinícius Augusto Machado Nogueira Escola Politécnica da Universidade de São Paulo (EPUSP) - São Paulo, Brazil
  • José Diogo da Silva Oliveira Escola Politécnica da Universidade de São Paulo (EPUSP) - São Paulo, Brazil
  • Marco Roberto Cavallari Universidade Federal da Integração Latino-Americana, Engenharia de Energia, Foz do Iguaçú, PR 85866-000, Brazil
  • Alain A. Quivy Institute of Physics, University of São Paulo
  • Fernando Josepetti Fonseca Escola Politécnica da Universidade de São Paulo (EPUSP) - São Paulo, Brazil
Keywords: flexible electronics, organic electronics, PVP, PMMA, PMF

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.

Published
2020-07-31
Section
Special Section on SBMicro2020