Abstract
AbstractThe electrical conductivity of solution‐grown poly(2,6‐dimethyl‐1,4‐phenylene oxide) (PPO) films doped with TCNQ, TCNE, TNF, and I2 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. © 1994 John Wiley & Sons, Inc.
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