Sensitive thermoelectric power and conductivity measurements on implanted polyparaphenylene thin films

✍ Scribed by C. Moreau; R. Antony; A. Moliton; B. François

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 249 KB
• Volume: 7
• Category: Article
• ISSN: 1616-301X
• DOI: 10.1002/(sici)1099-0712(199711/12)7:6<281::aid-amo314>3.0.co;2-k

✦ Synopsis

A sensitive apparatus for determining the conductivity and thermoelectric power of conducting polymer films at temperatures between 150 and 450 K is described. Brittle polyparaphenylene films doped by ion implantation with either alkali (caesium, sodium) or halogen (iodine) ions are studied by this method. Analysis of the temperature dependence of both conductivity and thermopower shows that the doping process of this conjugated polymer is efficient only when low parameters of implantation are selected and appears around room temperature. At higher temperatures the thermopower exhibits an anomalous evolution that we attribute to oxygen migration. *