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- W2039878086 abstract "Afin de mettre en évidence une relation morphologie-propriétés de transport électrique de films de polyacétylène deux types de films ont été préparés: déposés verticalement (PAv) et horizontalement (PAh). On constate que la conductivité en courant continu diminue avec l'épaisseur des PAv, alors qu'elle demeure pratiquement constante dans le cas des PAh. Une interprétation qualitative est proposée. Les mesures en courant alternatif montre qu'une conductivité de polarisation apparaît σ′(ω) = Aωs. Les valeurs du paramètre s sont comprises entre 0,5 et 0,8 pour l'ensemble des films. Two types of polyacetylene films have been prepared by vertical (PAv) and horizontal (PAh) deposition of the catalytic system, to study the influence of the structure of the films on the electric transport properties. For direct current, the conductivity decreases with the thickness of PAv whereas it roughly remains constant with PAh. An experimental explanation is proposed. Measurements for alternating current show a polarization conductivity σ′(ω) = Aωs. For all films, an average value of s between 0.5 and 0.8 is obtained." @default.
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- W2039878086 date "1991-01-01" @default.
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- W2039878086 title "Influence de la morphologie de films de polyacetylene sur les proprietes de transport electrique" @default.
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- W2039878086 doi "https://doi.org/10.1016/0014-3057(91)90078-3" @default.
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