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Effects of the Interface between Inorganic and Organic Components in a Bi₂Te₃-Polypyrrole Bulk Composite on Its Thermoelectric Performance.

ABSTRACT: We provided a method to hybridize Bi₂Te₃ with polypyrrole, thus forming an inorganic/organic bulk composite (Bi₂Te₃-polypyrrole), in which the effects of energy band junction and phonon scattering were expected to occur at the interface of the two components. Bi₂Te₃-polypyrrole exhibited a considerably high Seebeck coefficient compared to pristine Bi₂Te₃, and thus it recorded a somewhat increased power factor despite the loss in electrical conductivity caused by the organic component, polypyrrole. Bi₂Te₃-polypyrrole also exhibited much lower thermal conductivity than pristine Bi₂Te₃ because of the phonon scattering effect at the interface. We successfully brought about the decoupling phenomenon of electrical and thermal properties by devising an inorganic/organic composite and adjusting its fabrication condition, thereby optimizing its thermoelectric performance, which is considered the predominant property for n-type binary Bi₂Te₃ reported so far.

SUBMITTER: Kim C

PROVIDER: S-EPMC8200231 | biostudies-literature |

REPOSITORIES: biostudies-literature

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