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Izvorni znanstveni članak
New Aspects of Variable-range-hopping Conductivity in Doped Polyaniline
Dinko Babić
; Department of Physics, Faculty of Science, University of Zagreb, Bijenička c. 32, HR-10002 Zagreb, Croatia
Mirko Baćani
; Department of Physics, Faculty of Science, University of Zagreb, Bijenička c. 32, HR-10002 Zagreb, Croatia
Mario Novak
; Department of Physics, Faculty of Science, University of Zagreb, Bijenička c. 32, HR-10002 Zagreb, Croatia
Ivan Kokanović
; Department of Physics, Faculty of Science, University of Zagreb, Bijenička c. 32, HR-10002 Zagreb, Croatia
| Puni tekst: engleski, pdf (3 MB) | str. 1-5 | citiraj | |
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APA 6th Edition Babić, D., Baćani, M., Novak, M. i Kokanović, I. (2010). New Aspects of Variable-range-hopping Conductivity in Doped Polyaniline. Croatica Chemica Acta, 83 (1), 1-5. Preuzeto s https://hrcak.srce.hr/51993 MLA 8th Edition Babić, Dinko, et al. "New Aspects of Variable-range-hopping Conductivity in Doped Polyaniline." Croatica Chemica Acta, vol. 83, br. 1, 2010, str. 1-5. https://hrcak.srce.hr/51993. Citirano 16.02.2020. Chicago 17th Edition Babić, Dinko, Mirko Baćani, Mario Novak i Ivan Kokanović. "New Aspects of Variable-range-hopping Conductivity in Doped Polyaniline." Croatica Chemica Acta 83, br. 1 (2010): 1-5. https://hrcak.srce.hr/51993 Harvard Babić, D., et al. (2010). 'New Aspects of Variable-range-hopping Conductivity in Doped Polyaniline', Croatica Chemica Acta, 83(1), str. 1-5. Preuzeto s: https://hrcak.srce.hr/51993 (Datum pristupa: 16.02.2020.) Vancouver Babić D, Baćani M, Novak M, Kokanović I. New Aspects of Variable-range-hopping Conductivity in Doped Polyaniline. Croatica Chemica Acta [Internet]. 2010 [pristupljeno 16.02.2020.];83(1):1-5. Dostupno na: https://hrcak.srce.hr/51993 IEEE D. Babić, M. Baćani, M. Novak i I. Kokanović, "New Aspects of Variable-range-hopping Conductivity in Doped Polyaniline", Croatica Chemica Acta, vol.83, br. 1, str. 1-5, 2010. [Online]. Dostupno na: https://hrcak.srce.hr/51993. [Citirano: 16.02.2020.] |
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Sažetak
Temperature, T, dependence of the electrical conductivity, σ, of own-made polyaniline pellets, highly doped either by HCl or by dodecylbenzenesulphonic acid, is discussed. For the both dopants, a variable-range-hopping exponent 2/5 is found below T* ≈ 200 − 250 K. This result can be understood on the basis of a recent theory of Fogler, Teber and Shklovskii which takes into account Coulomb correlations in a three-dimensional system of chain-like conductors, predicting a power-law density of states for charge excitations around the Fermi energy. At T > T *, the σ(T) curves are steeper, implying a tendency towards nearest-neighbour hopping by a reduction of the average hopping length.
Ključne riječi
doped polyaniline; electrical conductivity; hopping transport; Coulomb interaction
Hrčak ID: 51993
URI
https://hrcak.srce.hr/51993
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