Solution processable PEDOT: PSS based hybrid electrodes for organic field effect transistors
- 저자
- Bernardi Sanyoto, Soyeon Kim, Won-Tae Park, Yong Xu, Jung-Hyun Kim, Jong-Choo Lim, Yong-Young Noh*
- 저널명
- Organic Electronics, 37, 352-357 (2016)
- 년도
- 2016
- Link
- https://doi.org/10.1016/j.orgel.2016.07.015 145회 연결
[Abstract]
We report high performance solution processed conductive inks used as contact electrodes for printed organic field effect transistors (OFETs). Poly(3,4-ethylenedioxythiophene): polystyrene sulfonate (PEDOT:PSS) electrodes show highly improved very low sheet resistance of 65.8 ± 6.5 Ω/square (Ω/□) by addition of dimethyl sulfoxide (DMSO) and post treatment with methanol (MeOH) solvent. Sheet resistance was further improved to 33.8 ± 8.6 Ω/□ by blending silver nanowire (AgNW) with DMSO doped PEDOT:PSS. Printed OFETs with state of the art diketopyrrolopyrrole-thieno[3,2-b]thiophene (DPPT-TT) semiconducting polymer were demonstrated with various solution processable conductive inks, including bare, MeOH treated PEDOT:PSS, single wall carbon nanotubes, and hybrid PEDOT:PSS-AgNW, as the source and drain (S/D) electrode by spray printing using a metal shadow mask. The highest field effect mobility, 0.49 ± 0.03 cm2 V−1 s−1 for DPPT-TT OFETs, was obtained using blended AgNW with DMSO doped PEDOT:PSS S/D electrode.