Distinctive Contributions from Organic Filler and Relaxorlike Polymer Matrix to Dielectric Response of CuPc-P(VDF-TrFE-CFE) Composite

V. Bobnar, A. Levstik, C. Huang, Qiming Zhang

    Research output: Contribution to journalArticlepeer-review

    1 Scopus citations

    Abstract

    The dielectric response of copper-phthalocyanine (CuPc) oligomers embedded in a poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) terpolymer matrix was studied. Although admixture of CuPc strongly increases the dielectric constant of the terpolymer at all temperatures, each of the two constituents determines the dielectric dynamics in a different temperature region—the relaxorlike matrix above and CuPc below the terpolymer’s freezing temperature. Two relaxations, reflecting the charge carriers’ response in CuPc, were detected. Results on ac conductivity reveal that the tunneling of polarons is the dominating charge transport mechanism.

    Original languageEnglish (US)
    Number of pages1
    JournalPhysical Review Letters
    Volume92
    Issue number4
    DOIs
    StatePublished - Jan 1 2004

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy(all)

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