Screen printing technology was employed to prepare flexible all organic poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)/methyl cellulose (MC) composite films on a polyvinylidene fluoride substrate. The influences of the contents of MC and dimethyl sulfoxide (DMSO) post-treatment on thermoelectric properties of the as-prepared PEDOT:PSS/MC composite films were investigated. The electrical conductivity of the PEDOT:PSS/MC composite films was decreased with the contents of MC increasing, whereas the Seebeck coefficient was kept almost constant. A maximum power factor of 2.1 μW m⁻¹ K⁻² was obtained at 360 K for the composite film containing 25.67 wt% MC. After the DMSO treatment, the power factor was increased to 16.2 µW m⁻¹ K⁻² at 340 K, which was ~7.7 times as that of the untreated composite film (2.1 μW m⁻¹ K⁻² at 360 K). The screen printing technology has the characteristics of easy operation and suitable for large-scale production, and therefore it is a great potential method for fabrication of flexible thermoelectric materials.

采用丝网印刷技术在聚偏二氟乙烯衬底上制备柔性的全有机聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）/甲基纤维素（MC）复合薄膜。研究了MC和二甲基亚砜（DMSO）后处理含量对制备的PEDOT：PSS / MC复合薄膜热电性能的影响。PEDOT：PSS / MC复合膜的电导率随MC含量的增加而降低，而塞贝克系数几乎保持恒定。对于包含25.67重量％MC的复合膜，在360K下获得2.1μWm ^-1 K ^-2的最大功率因数。DMSO处理后，功率因数增加到16.2 µW m ^-1 K ^-2在340 K下的温度约为未处理的复合膜的约7.7倍（在360 K下为2.1μWm ^-1 K ^-2）。丝网印刷技术具有易于操作且适合大规模生产的特点，因此，它是制造柔性热电材料的巨大潜力方法。