Electrical properties of nitrogen-containing plasma polymer films

Yoshimich Ohki, Toshiki Nakano, Shunichi Koike

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The electrical conductivity of plasma copolymerised films from allylamine and ethylene increases with an increase in the flow-rate of allylamine during the polymerisation, while the optical gap evaluated from optical absorption decreases. Deconvolution of infrared spectra showed that the ratio of sp2 to sp3 carbons is not related to the nitrogen content of the film. This fact shows that the conductivity increase is not due to the development of conjugated carbon double bonds. It is deduced that the increase in conductivity is mainly caused by two different effects of the introduced nitrogen, i.e. the reduction in optical gap and the increase in unpaired electrons, both arising from the interaction between nitrogen atoms and conjugated carbon double bonds.

Original languageEnglish
Pages (from-to)711-718
Number of pages8
JournalJournal of Physics D: Applied Physics
Volume23
Issue number6
DOIs
Publication statusPublished - 1990 Jun 14

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

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