Publication
Solid State Communications
Paper

Phototransport effects in polyacetylene, (CH)x

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Abstract

We have made the first comprehensive measurements of the photovoltaic and photoconductivity effects in polyacetylene in that we have extended the spectral range originally covered by Matsui and Nakamura [17] to include the visible region as well. The photovoltaic experiments were done on Schottky barrier junctions formed between AsF5 lightly-doped p-type trans-(CH)x and a low work function metal, the first junctions of this type to be produced in semiconducting polyacetylene. The observation of a photovoltaic response threshold at 1.48 eV provides the first definitive measurement of the single-particle band gap in trans-(CH)x. In addition, we have found the existence of a peak at 1.35 eV in the photoconductivity spectrum of undoped trans-(CH)x which may be due either to extrinsic sources or to thermal dissociation of a weakly bound Wannier exciton. © 1980.

Date

01 Jan 1980

Publication

Solid State Communications

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