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- W4387250210 abstract "For low-temperature thermoelectric applications, a bulk-phase inorganic/organic composite is prepared by introducing a conducting polymer, which is recognized as a potential organic thermoelectric material, into a representative inorganic thermoelectric material (n-type Bi2Te3). A conducting polymer, PEDOT:PSS, was chosen to prepare the Bi2Te3/PEDOT:PSS composite, wherein an intimate interface was formed between Bi2Te3 and PEDOT:PSS. The work function difference between Bi2Te3 and PEDOT:PSS created an energy barrier at the interface, possibly facilitating selective charge carrier transport depending on the energy levels of the carrier (i.e., energy filtering effect), thereby contributing to an enhancement in the Seebeck coefficient. The composite exhibited a completely different bipolar conduction tendency from pristine Bi2Te3, inducing a significant variation in the temperature dependence of the Seebeck coefficient. Furthermore, the interface may affect the carrier and phonon scattering probabilities, resulting in a considerable reduction in thermal conductivity. The composite adjustment was intensively studied to regulate the electrical and thermal properties using the energy filtering effect along with the carrier and phonon scattering probabilities, resulting in a noticeably enhanced thermoelectric performance. The temperature dependence of the performance was effectively adjusted using the bipolar conduction tendency, thereby affording the Bi2Te3/PEDOT:PSS composite exhibiting consistently high ZT values over the wide temperature range of 25–275 °C. The thermoelectric performance of Bi2Te3/PEDOT:PSS was competitive with that of previously reported high-performance n-type Bi2Te3-based analogs. The Bi2Te3/PEDOT:PSS composite is a promising n-type candidate for diverse low-temperature thermoelectric applications as a p-type Bi2Te3 counterpart." @default.
- W4387250210 created "2023-10-03" @default.
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- W4387250210 date "2023-10-01" @default.
- W4387250210 modified "2023-10-03" @default.
- W4387250210 title "Investigation of simultaneous carrier/phonon scattering and bipolar conduction effects in inorganic/organic composites: Implications for thermoelectric performance" @default.
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- W4387250210 doi "https://doi.org/10.1063/5.0160384" @default.
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