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Thin conductive coatings formed by plasmapolymerization of 2-iodothiophene

: Kruse, A.; Baalmann, A.; Budden, W.; Schlett, V.; Hennecke, M.


Surface and coatings technology 59 (1993), pp.359
ISSN: 0257-8972
Journal Article
Fraunhofer IFAM ()
conductivity; plasmapolymer

Intrinsically conductive plasma polymers were formed in a 2.45 GHz microwave low pressure plasma. The electrical conductivity and structure of the polymeric films were compared with those of electrochemically polymerized polythiophene. A new method of doping was tested using the iodine-containing monomer 2- iodothiophene. Films with high electrical conductivity (10 high -1 down to 10 high -6 Scm high -1) could be produced, and their chemical structure was studied by X-ray photoelectron spectroscopy and Fourier transform IR spectroscopy. The IR spectra give a strong indication that the chemical structure of these films is comparable with that of electrochemically deposited polythiophene. Optical emission spectroscopy was used to give in-situ information about the fragmentation mechanism in the plasma.