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Preparation and characterization of plasma-polymerized thiophene films

✍ Scribed by N. V. Bhat; D. S. Wavhal

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
257 KB
Volume
70
Category
Article
ISSN
0021-8995

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✦ Synopsis

Plasma polymerization of thiophene was carried out in a tubular reactor using an rf source. Various substrates such as aluminum, glass, and NaCl crystal were used. The rate of deposition attained an equilibrium value of 0.35 g cm Οͺ2 s Οͺ1 . Infrared spectra revealed the formation of polythiophene. The films were found to be highly crosslinked. The electrical conductivity was found to be very low (10 Οͺ15 -10 Οͺ10 S/cm). The mode of electrical conduction was found to be space charge-limited current. SEM studies showed that the films consist of globules, the size of which varied from 1 to 10 depending on the time of deposition. X-ray diffraction studies revealed the films to be highly amorphous.

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