A study on the plasma polymerisation of phenylacetylene and its electrical properties

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Abstract
The plasma polymerisation of phenylacetylene (PA) was carried out at 13.56 MHz and its electrical properties and structure were investigated. The plasma-polymerised PA films were found to have chemical structure similar to that of chemically polymerised polyphenylacetylene in a short range of molecular chains. These films were found to be electrically insulating. They also showed substantial photoconductivity at long wavelengths such as 700 nm; this was found to arise from the excitation of trapped charges. The doping of the plasma-polymerised PA films with iodine increased both the photoconductivity and the dark conductivity.

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