One-Step Interface Engineering for All-Inkjet-Printed, All-Organic Components in Transparent, Flexible Transistors and Inverters: Polymer Binding
SCIE
SCOPUS
- Title
- One-Step Interface Engineering for All-Inkjet-Printed, All-Organic Components in Transparent, Flexible Transistors and Inverters: Polymer Binding
- Authors
- Ha, J.; Chung, S.; Pei, M.; Cho, K.; Yang, H.; Hong, Y.
- Date Issued
- 2017-02
- Publisher
- American Chemical Society
- Abstract
- We report a one-step interface engineering methodology which can be used on both polymer electrodes and gate dielectric for all-inkjet-printed, flexible, transparent organic thin-film transistors (OTFTs) and inverters. Dimethylchlorosilane-terminated polystyrene (PS) was introduced as a surface modifier to cured poly(4-vinylphenol) dielectric and poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) electrodes without any pretreatment. On the untreated and PS interlayer-treated dielectric and electrode surfaces, 6,13-bis(triisopropylsilylethynyl)pentacene was printed to fabricate OTFTs and inverters. With the benefit of the PS interlayer, the electrical properties of the OTFTs on a flexible plastic substrate were significantly improved, as shown by a field-effect mobility (��FET) of 0.27 cm2 V-1 s-1 and an on/off current ratio (Ion/Ioff) of greater than 106. In contrast, the untreated systems showed a low ��FET of less than 0.02 cm2 V-1 s-1 and Ion/Ioff �� 104. Additionally, the all-inkjet-printed inverters based on the PS-modified surfaces exhibited a voltage gain of 7.17 VV-1. The all-organic-based TFTs and inverters, including deformable and transparent PEDOT:PSS electrodes with a sheet resistance of 160-250 �� sq-1, exhibited a light transmittance of higher than 70% (at wavelength of 550 nm). Specifically, there was no significant degradation in the electrical performance of the interface engineering-assisted system after 1000 bending cycles at a radius of 5 mm. ? 2017 American Chemical Society.
- Keywords
- Bins; Conducting polymers; Electric field effects; Electric inverters; Electrodes; Field effect transistors; Gate dielectrics; Ink jet printing; Interfaces (materials); Polymers; Polystyrenes; Semiconducting organic compounds; Thin film circuits; Thin films; Transistors; Interface engineering; Organic thin film transistors; Polymer binding; Polymer electrodes; Transparent thin film transistor; Thin film transistors
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/50844
- DOI
- 10.1021/acsami.6b14702
- ISSN
- 1944-8244
- Article Type
- Article
- Citation
- ACS Applied Materials and Interfaces, vol. 9, no. 10, page. 8819 - 8829, 2017-02
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