Abstract
Thermal transporting properties of electrically conductive polyaniline films were first investigated in wide range of temperatures above room temperature as organic thermoelectric materials. Thermal conductivities of various protonic acid-doped polyaniline films were measured by combination of a laser flash method and a differential scanning calorimeter in relation with electrical conductivity and a kind of dopant. The thermal conductivities thus measured are in the range of conventional organic polymers, indicating that the doped polyaniline films have extremely low thermal conductivities among electrically conductive materials, and have correlation with neither electrical conductivity, nor a kind of dopant. Consequently the polyaniline film, which shows very high electrical conductivity, has comparable thermoelectric figure-of-merit (ZT) with feasible inorganic thermoelectric materials such as iron silicide.
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References
A. G. MacDiarmid, Synth. Met., 84 (1997) 27.
Y. Cao, P. Smith and A. J. Heeger, Synth. Met., 55-57 (1993) 3614.
‘Semiconductors and Thermoelements and Thermoelectric Cooling’, Ed. by A. F. Ioffe, Infosearch Limited, London 1957.
‘Thermoelectric Materials - New Direction and Approaches’, Ed. by T. M. Tritt, M. G. Kanatzidis, H. B. Lyon, Jr. and G. D. Mahan, Materials Research Society, Warrendale, Pennsylvania 1997.
P. N. Adams, P. J. Laughlin and A. P. Monkman, Polymer, 37 (1996) 3411.
W. J. Parker, R. J. Jenkins, C. P. Butter and G. L. Abbortt, J. Appl. Phys., 32 (1961) 1679.
L. H. Judovits, R. C. Bopp, U. Gaur and B. Wunderlich, J. Polym. Sci., Part B: Polym. Phys., 24 (1986) 2725.
Y. Wei, G. W. Jang, K. F. Hsueh, E. M. Scherr, A. G. MacDiarmid and A. J. Epstein, Polymer, 33 (1992) 314.
H. Yan, N. Ohno and N. Toshima, Chem. Lett., (2000) 392.
A. Jagannathan, R. Orbach and O. Entin-Wohlman, ‘Thermal conduction due to hopping processes in amorphous solids’ in ‘Hopping Transport in Solids’, Ed. by M. Pollak and B. Shklovskii, Elsevier Science, North-Holland 1991.
‘Physical Properties of Polymers Handbook’ Ed. by J. E. Mark, AIP Press, Woodbury, New York 1996.
H. Yan and N. Toshima, Chem. Lett., (1990) 1217.
H. Yan, T. Ohta and N. Toshima, Macromol. Mater. Eng., 286 (2001) 139.
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Yan, H., Sada, N. & Toshima, N. Thermal transporting properties of electrically conductive polyaniline films as organic thermoelectric materials. Journal of Thermal Analysis and Calorimetry 69, 881–887 (2002). https://doi.org/10.1023/A:1020612123826
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DOI: https://doi.org/10.1023/A:1020612123826