| 초록 |
An electrohydrodynamic (EHD) printing process was optimized for the printing of a Poly(3,4-ethylenedioxythiophene):poly (4-styrenesulfonate) (PEDOT:PSS) conductive polymer by manipulating the surface tension of the polymer. A stable cone-jet mode of the EHD printing process was confirmed by adjusting the process parameters, such as the applied voltage, flow rate, and working distance. The addition of a nonionic surfactant enabled printing of PEDOT:PSS conductive lines with widths that ranged from 335 to 90 µm, with low-power operation. In addition, a 100-fold increase in the conductivity of the PEDOT:PSS film was achieved compared to the pristine PEDOT:PSS. Moreover, the printed line resistance decreased from 1.3 × 104 Ω/mm to 0.2 × 103 Ω/mm as the number of printed patterns increased. |
