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<p>There is still limited research on the influence of polymer content in inorganic/organic materials on thermoelectric properties. In this study, we systematically investigated the influence of the content of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) in the Ag<sub>2</sub>Se nanowires/PEDOT:PSS (Ag<sub>2</sub>Se NWs/PEDOT:PSS) composite films on the thermoelectric properties. When the content of PEDOT:PSS is 1.54 wt%, the composite film achieved the highest power factor (PF) of ~ 2074.0&#xa0;µW&#xa0;m<sup>−1</sup>&#xa0;K<sup>−2</sup> at room temperature. The maximum output power (<i>P</i><sub>max</sub>) of the single-leg thermoelectric device based on the composite film is approximately 49.42 nW, and the maximum power density (PD<sub>max</sub>) is 4.28 W m<sup>−2</sup> at a temperature difference of 25&#xa0;K. Furthermore, the film exhibits superior flexibility with 94.3% of the original performance retention after 2000 bending cycles around a rod with a diameter of 5&#xa0;mm. This work provides valuable guidance for the design and fabrication of high-performance flexible inorganic/organic composite thermoelectric materials.</p>

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Preparation of high-performance Ag2Se NWs/PEDOT:PSS composite films and influence of PEDOT:PSS content on thermoelectric properties

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年2月26日

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  • Ruoxi Wang,
  • Rongke Sun,
  • Yanmei Ren,
  • Yanqing Ma,
  • Lei Ma

摘要

There is still limited research on the influence of polymer content in inorganic/organic materials on thermoelectric properties. In this study, we systematically investigated the influence of the content of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) in the Ag2Se nanowires/PEDOT:PSS (Ag2Se NWs/PEDOT:PSS) composite films on the thermoelectric properties. When the content of PEDOT:PSS is 1.54 wt%, the composite film achieved the highest power factor (PF) of ~ 2074.0 µW m−1 K−2 at room temperature. The maximum output power (Pmax) of the single-leg thermoelectric device based on the composite film is approximately 49.42 nW, and the maximum power density (PDmax) is 4.28 W m−2 at a temperature difference of 25 K. Furthermore, the film exhibits superior flexibility with 94.3% of the original performance retention after 2000 bending cycles around a rod with a diameter of 5 mm. This work provides valuable guidance for the design and fabrication of high-performance flexible inorganic/organic composite thermoelectric materials.