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2019
Coroa, J., B. M. Morais Faustino, A. C. Marques, C. Bianchi, T. Koskinen, T. Juntunen, I. Tittonen, and I. Ferreira, "Highly transparent copper iodide thin film thermoelectric generator on a flexible substrate", RSC Advances, vol. 9, pp. 35384, 2019.
2018
Ropio, I., A. C. Baptista, J. P. Nobre, J. Correia, F. Belo, S. Taborda, M. B. M. Faustino, J. P. Borges, A. Kovalenko, and I. Ferreira, "Cellulose paper functionalised with polypyrrole and poly(3,4-ethylenedioxythiophene) for paper battery electrodes", Org Electron, 2018. AbstractDOI

A simple process of commercial paper functionalisation via in situ polymerisation of conductive polymers onto cellulose fibres was investigated and applied as electrodes in paper-based batteries. The functionalisation involved polypyrrole (PPy) and Poly (3,4-ethylenedioxythiophene) (PEDOT) as conductive polymers with the process of functionalisation optimised for each polymer individually with respect to oxidant-to-monomer ratios and polymerisation times and temperature. Paper with conductivity values of 44 mS/cm was obtained by exposing the samples to pyrrole vapour for a period of 30 min at room temperature; however, polymerisation at temperatures of 40 °C lead to higher conductivity values to up 141 mS/cm. Consequently, functionalised PPy and PEDOT papers were applied as cathodes in batteries with Al foil anodes and commercial paper soaked in an electrolyte solution of NaCl.