The influence of electrode material on charge transport properties of polypyrrole thin films

The influence of electrode material on charge transport properties of polypyrrole thin films

We investigated electrodeposited polypyrrole (PPy) thin films. Tin-oxide (TO) and Au were used as deposition substrate and it was found that film morphology and roughness are strongly influenced by substrate choice. We determined the electrical conductivity of PPy films in Au/PPy/Ni, Au/PPy/Al, TO/P...

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Veröffentlicht in:Thin solid films 2001-06, Vol.388 (1), p.171-176
Hauptverfasser: Valaski, R., Ayoub, S., Micaroni, L., Hümmelgen, I.A.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Electrical properties and measurements
Exact sciences and technology
Organic semiconductors
Physicochemistry of polymers
Polymerization
Polymers
Polymers and radiations
Tin oxide
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Zusammenfassung:We investigated electrodeposited polypyrrole (PPy) thin films. Tin-oxide (TO) and Au were used as deposition substrate and it was found that film morphology and roughness are strongly influenced by substrate choice. We determined the electrical conductivity of PPy films in Au/PPy/Ni, Au/PPy/Al, TO/PPy/Ni and TO/PPy/Al devices and estimated the positive charge carrier mobility and charge carrier concentration in PPy. Comparing the onset potentials for oxidation in the cyclic voltammograms of PPy and poly(3-methylthiophene) we constructed the energy levels diagram of PPy.
ISSN:0040-6090
1879-2731
DOI:10.1016/S0040-6090(01)00845-8