TY - GEN
T1 - The effect of carrier conduction between main chains on thermoelectric properties of polythiophene
AU - Shinohara, Y.
AU - Isoda, Y.
AU - Imai, Y.
AU - Hiraishi, K.
AU - Oikawa, H.
AU - Nakanishi, H.
PY - 2007
Y1 - 2007
N2 - Polythiophene films were synthesized by electrolytic polymerization using nitrobenzene as a solvent and tetra-n-butylammonium perchrorate as an electrolyte. We have evaluated thermoelectric properties of Seebeck coefficient, electrical conductivity, hall mobility and career concentration of the films in the in-plane direction. The films showed a tendency that Seebeck coefficient decreased with an increasing electrical conductivity. The figure-of-merit was calculated assuming the thermal conductivity was 0.1W/Km. The figure-of-merit increased with an increasing electrical conductivity up to 1.5×10 -4/K. The electrical conductivity was mainly changed with Hall mobility, which was related to molecular spacing of the mains chains. Variable range hopping was a determining process of carrier conduction. The easiness of carrier conduction between main chain molecules directly affected the figure-of-merit of the polythiophene polymers.
AB - Polythiophene films were synthesized by electrolytic polymerization using nitrobenzene as a solvent and tetra-n-butylammonium perchrorate as an electrolyte. We have evaluated thermoelectric properties of Seebeck coefficient, electrical conductivity, hall mobility and career concentration of the films in the in-plane direction. The films showed a tendency that Seebeck coefficient decreased with an increasing electrical conductivity. The figure-of-merit was calculated assuming the thermal conductivity was 0.1W/Km. The figure-of-merit increased with an increasing electrical conductivity up to 1.5×10 -4/K. The electrical conductivity was mainly changed with Hall mobility, which was related to molecular spacing of the mains chains. Variable range hopping was a determining process of carrier conduction. The easiness of carrier conduction between main chain molecules directly affected the figure-of-merit of the polythiophene polymers.
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U2 - 10.1109/ICT.2007.4569506
DO - 10.1109/ICT.2007.4569506
M3 - Conference contribution
AN - SCOPUS:51849161465
SN - 9781424422623
T3 - International Conference on Thermoelectrics, ICT, Proceedings
SP - 405
EP - 407
BT - Proceedings ICT'07 - 26th International Conference on Thermoelectrics
T2 - ICT'07 - 26th International Conference on Thermoelectrics
Y2 - 3 June 2007 through 7 June 2007
ER -