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Thermoelectric Performance of Poly(3,4-Ethylenedioxy-thiophene)/Poly(Styrenesulfonate) Pellets and Films

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The thermoelectric performance of poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT/PSS) pellets and free-standing PEDOT/PSS films, prepared from PEDOT/PSS solution containing the additives dimethyl sulfoxide or ethylene glycol, have been systematically investigated. It has been found that the electrical conductivity of free-standing PEDOT/PSS films is invariably much higher than that of PEDOT/PSS pellets, while there is no distinct change in the Seebeck coefficient. The highest electrical conductivity of a free-standing PEDOT/PSS film can be up to 300 S cm−1, five to six times higher than that of PEDOT/PSS pellets (55 S cm−1). The thermal conductivity was measured over a wide temperature range, indicating that PEDOT/PSS has extremely low thermal conductivity. The figure of merit (ZT) of free-standing PEDOT/PSS films with good environmental stability can be up to 10−2, an order of magnitude higher than that of pressed PEDOT/PSS pellets (10−3).

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Authors and Affiliations

  1. Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang, 330013, China

    Congcong Liu, Fengxing Jiang, Ruirui Yue, Baoyang Lu & Jingkun Xu

  2. Department of Control Science and Engineering, Zhejiang University, Hangzhou, 310058, China

    Mingyu Huang

  3. School of Communication and Electronics, Jiangxi Science and Technology Normal University, Nanchang, 330013, China

    Guodong Liu

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  1. Congcong Liu
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  2. Fengxing Jiang
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  4. Ruirui Yue
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  5. Baoyang Lu
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Correspondence to Jingkun Xu.

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Liu, C., Jiang, F., Huang, M. et al. Thermoelectric Performance of Poly(3,4-Ethylenedioxy-thiophene)/Poly(Styrenesulfonate) Pellets and Films. J. Electron. Mater. 40, 648–651 (2011). https://doi.org/10.1007/s11664-010-1494-8

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