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Effect of chemical doping on the electrical conductivity of poly(2,6‐dimethyl‐1,4‐phenylene oxide)
Author(s) -
Kalkar A. K.,
Kundagol Shankar,
Chand Suresh,
Chandra Subhas
Publication year - 1994
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1994.070510708
Subject(s) - doping , dopant , materials science , phenylene , polaron , electrical resistivity and conductivity , oxide , conductivity , thermal conduction , acceptor , charge transfer complex , polymer chemistry , chemistry , electron , condensed matter physics , photochemistry , optoelectronics , composite material , polymer , electrical engineering , physics , quantum mechanics , metallurgy , engineering
The electrical conductivity of solution‐grown poly(2,6‐dimethyl‐1,4‐phenylene oxide) (PPO) films doped with TCNQ, TCNE, TNF, and I 2 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.