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Conducting polymers: Halogen doped polyacetylene

1978; American Institute of Physics; Volume: 69; Issue: 11 Linguagem: Inglês

10.1063/1.436503

1520-9032

C. K. Chiang, Y. W. Park, Alan J. Heeger, Hideki Shirakawa, E. J. Louis, Alan G. MacDiarmid,

Advanced Memory and Neural Computing

A study of the electrical conductivity of the halogen doped transpolyacetylene system, (CH)x, is reported. When films of trans- (CH)x are exposed to chlorine, bromine, or iodine vapor, uptake of halogen occurs; and the conductivity increases markedly, over eleven orders of magnitude in the case of iodine. The behavior of the halogenated polyacetylene is like that of a series of semiconductors with activation energies which vary with halogen content. The results are discussed in terms of a model of the doping process based on charge transfer.