An electrohydrodynamic (EHD) jet printing technique was used for direct printing of a conductive polymer combined with carbon nanotubes (CNT). The solutions mixture of poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) and carbon nanotubes (CNTs) wrapped with PSS served as a PEDOT:PSS/CNT composite ink for the EHD jet printing. The EHD jet-printed patterns of the PEDOT:PSS/CNT composite exhibited excellent dimensional stability and provided sub-10-micrometer channel lengths suitable for highly integrated organic thin-film transistors (OTFTs). The resulting pentacene OTFTs employing the channel length of 7 μm yielded the field-effect mobility of 0.03 ± 0.01 cm²/(V s). In addition, we investigated the electronic structure and the crystalline morphology at the interface between pentacene and the PEDOT:PSS/CNT composite electrode, as well as the contact resistance of the OTFTs by varying the channel length produced by the EHD jet printing process.

电液动力学（EHD）喷射印刷技术用于直接印刷与碳纳米管（CNT）结合的导电聚合物。聚（3,4-乙撑二氧噻吩）：聚（4-苯乙烯磺酸盐）（PEDOT：PSS）和包裹有PSS的碳纳米管（CNT）的溶液混合物用作EHD喷墨印刷的PEDOT：PSS / CNT复合油墨。PEDOT：PSS / CNT复合材料的EHD喷墨印刷图案具有出色的尺寸稳定性，并提供了小于10微米的沟道长度，适用于高度集成的有机薄膜晶体管（OTFT）。通道长度为7μm的并五苯OTFT的场效应迁移率为0.03±0.01 cm ²/（V s）。此外，我们通过改变EHD喷射印刷工艺产生的沟道长度，研究了并五苯与PEDOT：PSS / CNT复合电极之间界面的电子结构和晶体形态，以及OTFT的接触电阻。