Photoelectrochemical polymerization of poly(3,4-ethylenedioxythiophene), PEDOT, was successfully realized on anodic film grown to 50 V on magnetron sputtered Ti-6 atom % Si alloys. Scanning electron microscopy allowed us to evidence formation of compact and uniform polymer layers on the oxide surface. Photoelectrochemical and impedance measurements showed that photopolymerization allows one to grow PEDOT in its conducting state, while a strong cathodic polarization is necessary to bring the polymer in its p-type semiconducting state. Information on the optical and electrical properties of metal/oxide/polymer/electrolyte junctions proves that PEDOT has promising performance as an electrolyte in metal/insulator/metal structures, while its use in metal/oxide/semiconductor-based devices is negatively influenced by the occurrence of lithium intercalation phenomena during the dedoping process.

Di Franco, F., Santamaria, M., Di Quarto, F., Macaluso, R., Mosca, M., Calì, C. (2014). Electrochemical fabrication and physicochemical characterization of metal/high- k insulating oxide/polymer/electrolyte junctions. JOURNAL OF PHYSICAL CHEMISTRY. C, 118(Issue 51), 29973-29980 [10.1021/jp510169r].

Electrochemical fabrication and physicochemical characterization of metal/high- k insulating oxide/polymer/electrolyte junctions

DI FRANCO, Francesco;SANTAMARIA, Monica;DI QUARTO, Francesco;MACALUSO, Roberto;MOSCA, Mauro;CALI', Claudio
2014-01-01

Abstract

Photoelectrochemical polymerization of poly(3,4-ethylenedioxythiophene), PEDOT, was successfully realized on anodic film grown to 50 V on magnetron sputtered Ti-6 atom % Si alloys. Scanning electron microscopy allowed us to evidence formation of compact and uniform polymer layers on the oxide surface. Photoelectrochemical and impedance measurements showed that photopolymerization allows one to grow PEDOT in its conducting state, while a strong cathodic polarization is necessary to bring the polymer in its p-type semiconducting state. Information on the optical and electrical properties of metal/oxide/polymer/electrolyte junctions proves that PEDOT has promising performance as an electrolyte in metal/insulator/metal structures, while its use in metal/oxide/semiconductor-based devices is negatively influenced by the occurrence of lithium intercalation phenomena during the dedoping process.
Settore ING-IND/23 - Chimica Fisica Applicata
Settore ING-INF/01 - Elettronica
Di Franco, F., Santamaria, M., Di Quarto, F., Macaluso, R., Mosca, M., Calì, C. (2014). Electrochemical fabrication and physicochemical characterization of metal/high- k insulating oxide/polymer/electrolyte junctions. JOURNAL OF PHYSICAL CHEMISTRY. C, 118(Issue 51), 29973-29980 [10.1021/jp510169r].
File in questo prodotto:
File Dimensione Formato  
Journal of Physical Chemistry C - 118 - 29973 (2014).pdf

Solo gestori archvio

Descrizione: Articolo principale
Dimensione 7.5 MB
Formato Adobe PDF
7.5 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/104336
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 16
  • ???jsp.display-item.citation.isi??? 11
social impact