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Effect of chemical doping on the electrical conductivity of poly(2,6-dimethyl-1,4-phenylene oxide)

✍ Scribed by A. K. Kalkar; Shankar Kundagol; Suresh Chand; Subhas Chandra

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
443 KB
Volume
51
Category
Article
ISSN
0021-8995

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✦ Synopsis

The electrical conductivity of solution-grown poly (2,6-dimethyl-1,4-phenylene oxide) (PPO) films doped with TCNQ, TCNE, TNF, and I, has been studied as a function of dopant concentration, temperature (298-353 K ) , and field (50-2000 V ) . PPO forms a conductive complex on doping with these strong electron-acceptor organic molecules. As with PPO, two distinct ohmic and nonohmic conduction regions at low and higher fields, respectively, are observed. The conduction properties of doped PPO films result from the formation of an isotropic continuous charge-transfer complex. The existence of such a complex is confirmed by UV-visible absorption spectra measurements. A possible mechanism for the electrical conduction process is discussed.

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