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• W2023967049 abstract "Abstract Electron localization in the methyl ring-substituted derivative of polyaniline, poly(o-toluidine), has been investigated by electric field dependence of conductivity σ(E). We found lnσ(E) = KE 1/2, with K varying as square root of temperature (K ∞ T −1/2). This result is in accord with quasi-one-dimensional variable range hopping of charge carriers localized along a one-dimensional chain, with an effective Coulomb barrier between adjacent sites. The measured non-ohmic conductivity is modeled by the Poole-Frenkel effect where the Coulomb potential between localized sites is lowered by the electric field. Model analysis yields an estimated effective barrier height of ∼0.1 eV, corresponding to an effective charge carrier mass of the order of that of an electron. In contrast, the charging energy limited tunneling model predicts lnσ ∞ E −1, which is not consistent with the experimental results." @default.
• W2023967049 created "2016-06-24" @default.
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• W2023967049 date "1990-10-01" @default.
• W2023967049 modified "2023-09-22" @default.
• W2023967049 title "Non-ohmic Conductivity: A Probe of the Localization Mechanism in Polyaniline Derivatives" @default.
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• W2023967049 doi "https://doi.org/10.1080/00268949008037238" @default.
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