Electronic properties of polypyrrole/polyindene composite/metal junctions

Date
1997
Authors
Bozkurt, A.
Ercelebi, C.
Toppare, L.
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Supervisor
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Source Title
Synthetic Metals
Print ISSN
0379-6779
Electronic ISSN
Publisher
Elsevier
Volume
87
Issue
3
Pages
219 - 223
Language
English
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Abstract

Junction properties between conducting polymer composites of polypyrrole/polyindene (PPy/PIn) with different conductivities and metals like Pt, Au, Al and In have been investigated. Rectifying junctions were observed for low work function metals, In and Al; however, high work function metals, Pt and Au, were observed to form ohmic contacts to PPy/PIn composite in the sandwich geometry. The rectifying behavior of the metal/composite/Pt junctions improved when the conductivity of the composite was decreased from 1 to 0.01 S/cm. Using the ideal Schottky theory various junction parameters have been determined. All planar junctions were ohmic regardless of the conductivities of the samples.

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