Optimization of electrohydrodynamic-printed organic electrodes for bottom-contact organic thin film transistors
- Authors
- Park, So Hyun; Kim, Jiye; Park, Chan Eon; Lee, Jaewoong; Lee, Hwa Sung; Lim, Sooman; Kim, Se Hyun
- Issue Date
- Nov-2016
- Publisher
- Elsevier BV
- Keywords
- (3,4-ethylenedioxythiophene):poly(4-styrenesulfonate); Bottom-contact OTFT; Electrohydrodynamic printing; Organic thin-film transistor; Source/drain electrodes
- Citation
- Organic Electronics, v.38, pp.48 - 54
- Indexed
- SCIE
SCOPUS
- Journal Title
- Organic Electronics
- Volume
- 38
- Start Page
- 48
- End Page
- 54
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/12225
- DOI
- https://doi.org/10.1016/j.orgel.2016.07.040
- ISSN
- 1566-1199
- Abstract
- In this study, we investigate the optimization of printed (3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) as source/drain electrodes for organic thin film transistors (OTFTs) through electrohydrodynamic (EHD) printing process. The EHD-printed PEDOT:PSS electrodes should fulfill the prerequisites of not only high conductivity but also optimum surface tension for successful jetting. The conductivity of PEDOT:PSS was dramatically enhanced from 0.07 to 352 S/cm by the addition of dimethylsulfoxide (DMSO). To use the DMSO-treated PEDOT:PSS solution in the EHD printing process, its surface tension was optimized by the addition of surfactant (Triton X-100), which was found to enable various jetting modes. In the stable cone-jet mode, the patterning of the modified PEDOT:PSS solution was realized on the surface-functionalized SiO2 substrates; the printed line widths were in the range 384 to 81 μm with a line resistance of 8.3 × 103 Ω/mm. In addition, pentacene-based OTFTs employing the EHD-printed PEDOT:PSS as source and drain electrodes were found to exhibit electrical performances superior to an equivalent vacuum-deposited Au-based device. © 2016 Elsevier B.V.
- Files in This Item
-
Go to Link
- Appears in
Collections - COLLEGE OF ENGINEERING SCIENCES > DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.