Influence of film thickness on charge transport of electrodeposited polypyrrole thin films

We report the investigation of charge transport properties of thin electrodeposited polypyrrole (PPy) films. The charge transport in these films is limited by thermionic injection and an expression for thermionic injection into low mobility materials is used to evaluate the energy barrier between el...

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Veröffentlicht in:	Thin solid films 2002-08, Vol.415 (1), p.206-210
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 Polymers Polymers and radiations Properties and characterization Tin oxide
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Beschreibung
Zusammenfassung:	We report the investigation of charge transport properties of thin electrodeposited polypyrrole (PPy) films. The charge transport in these films is limited by thermionic injection and an expression for thermionic injection into low mobility materials is used to evaluate the energy barrier between electrodes (tin-oxide, Al and Ni) and PPy. Using the same expression, we estimate the positive charge carrier mobility, demonstrating that its value is higher for thinner films.
ISSN:	0040-6090 1879-2731
DOI:	10.1016/S0040-6090(02)00553-9