期刊
SURFACES
卷 4, 期 2, 页码 157-168出版社
MDPI
DOI: 10.3390/surfaces4020015
关键词
PEDOT; electrosynthesis; hybrid solid-state electronic device; Cu electrodeposition; Raman; visible spectroscopy; SEM; AFM; polymer coating
资金
- PRIN (Progetti di Ricerca di Rilevante Interesse Nazionale) [2017YH9MRK]
- Regione Toscana POR CreO FESR 2014-2020-Azione 1.1.5 sub-azione a1-Bando 1 Progetti Strategici di ricerca e sviluppo [CUP 3553.04032020.158000165_1385, CIPE D14E20006260009, CUP 3553.04032020.158000223_1538, CUP CIPE D14E20006370009]
The research aims to expand the application of PEDOT through electrochemical deposition, particularly in the preparation of thin films in tight contact with electrode surfaces. The study demonstrates that using PEDOT films as the base material for a copper layer allows for the preparation of a hybrid electronic device.
Conductive polymers are nowadays attracting great attention for their peculiar mechanical, electrical and optical proprieties. In particular, PEDOT can be used in a wide range of innovative applications, from electroluminescent devices to photovoltaics. In this work, the electrochemical deposition of 3,4 ethylenedioxythiophene (EDOT) was performed on various substrates (ITO, thin films of gold and palladium on silicon wafers) by means of both potentiostatic and potentiodynamic techniques. This was intended to further expand the applications of electrochemically deposited PEDOT, particularly regarding the preparation of thin films in tight contact with electrode surfaces. This allows one to obtain systems prone to be used as electrodes in stacked devices. Chronoamperometric experiments were performed to study the nucleation and growth process of PEDOT. SEM, ESEM and AFM analysis allowed the characterization of the morphology of the polymeric films obtained. Raman and visible spectroscopy confirmed the high-quality of the coatings on the different substrates. Then, the PEDOT films were used as the base material for the further electrodeposition of a copper layer. In this way, a hybrid electronic device was obtained, by using electrochemical methods only. The high conductivity and ohmic behavior of the device were confirmed over a wide range of frequencies with electrical impedance spectroscopy analysis.
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