Direct patterning of conductive carbon nanotube/polystyrene sulfonate composites via electrohydrodynamic jet printing for use in organic field-effect transistors
- Authors
- Jeong, Yong Jin; Lee, Xinlin; Bae, Jaehyun; Jang, Jaeyoung; Joo, Sang Woo; Lim, Sooman; Kim, Se Hyun; Park, Chan Eon
- Issue Date
- Apr-2016
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- JOURNAL OF MATERIALS CHEMISTRY C, v.4, no.22, pp.4912 - 4919
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF MATERIALS CHEMISTRY C
- Volume
- 4
- Number
- 22
- Start Page
- 4912
- End Page
- 4919
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/5622
- DOI
- 10.1039/c6tc01371f
- ISSN
- 2050-7526
- Abstract
- Carbon-based conductive lines were directly patterned using an electrohydrodynamic (EHD) jet printing technique. We successfully dispersed multiwalled carbon nanotubes (MWCNTs) in a polar solvent through a size-sorting and blending process involving polystyrene sulfonate (PSS), and we fabricated a homogeneous MWCNT/PSS nano-composite ink for EHD printing. We demonstrated that EHD printing was affected by the type of solvent, which adjusted the surface tension of the MWCNT/PSS ink. Ethanol, with a lower surface tension compared to water, provided four different jetting modes, depending on the applied voltage and working distance. EHD-printed MWCNT/PSS conductive lines were used as source/drain (S/D) electrodes in organic field-effect transistors (OFETs). The resulting OFETs showed reliable performance with negligible hysteresis on chlorosilane-terminated polystyrene (PS-brush)-modified substrates.
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