Journal
JOURNAL OF ELECTRONIC MATERIALS
Volume 40, Issue 5, Pages 898-902Publisher
SPRINGER
DOI: 10.1007/s11664-010-1403-1
Keywords
Hybrid thermoelectric materials; bismuth(III) telluride; nanoparticles; polyaniline; Bi2Te3; reduction; bismuth(III) chloride; tetrachlorotellurium; tetraethylene glycol; Seebeck coefficient; thermoelectric power factor
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Funding
- Ministry of Education, Culture, Sports, Science, and Technology (MEXT), Japan
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Thermoelectric materials have received much attention recently from the viewpoint of global environmental issues and effective utilization of energy resources. Especially those effective at relatively low temperature, such as below 100A degrees C, which are usually abandoned without use, have become noteworthy recently. From this point of view, organic thermoelectric materials are most attractive, because they could be prepared at low cost and applied in various locations due to their flexibility. We have investigated the thermoelectric properties of organic conducting polymers such as polyaniline, polypyrrole, and polyphenylenevinylene, and succeeded in increasing the thermoelectric performance by selecting dopants, stretching conducting films, etc. Recently we have focused on new systems of organic-inorganic hybrid thermoelectric materials. Herein we present the preparation of a novel system of hybrids of polyaniline and bismuth(III) telluride nanoparticles, starting from bismuth(III) chloride and tetrachlorotellurium by using polyvinylpyrrolidone as a protecting reagent, as well as their thermoelectric properties. The hybrids prepared by this particular method showed much higher thermoelectric performance than the starting organic conducting polymer.
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