Abstract
We prepared a mixture of thermoelectric bismuth telluride particles, a conductive polymer [poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)], poly(acrylic acid) (PAA), and several organic additives to fabricate thermoelectric films using printing or coating techniques. In the mixture, the organic components (PEDOT:PSS, PAA, and an additive) act as a binder to connect bismuth telluride particles mechanically and electrically. Among the organic additives used, glycerol significantly enhanced the electrical conductivity and bismuth telluride particle dispersibility in the mixture. Bi0.4Te3.0Sb1.6 films fabricated by spin-coating the mixture showed a thermoelectric figure of merit (ZT) of 0.2 at 300 K when the Bi0.4Te3Sb1.6 particle diameter was 2.8 μm and its concentration in the elastic films was 95 wt.%.
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Kato, K., Hagino, H. & Miyazaki, K. Fabrication of Bismuth Telluride Thermoelectric Films Containing Conductive Polymers Using a Printing Method. J. Electron. Mater. 42, 1313–1318 (2013). https://doi.org/10.1007/s11664-012-2420-z
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DOI: https://doi.org/10.1007/s11664-012-2420-z