Solution-Processed Flexible Organic Transistors Showing Very-Low Subthreshold Slope with a Bilayer Polymeric Dielectric on Plastic
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SCOPUS
- Title
- Solution-Processed Flexible Organic Transistors Showing Very-Low Subthreshold Slope with a Bilayer Polymeric Dielectric on Plastic
- Authors
- Zihong Liu; Oh, JH; Mark E. Roberts; Peng Wei; Bipul C. Paul; Masaki Okajima; Yoshio Nishi; Zhenan Bao
- Date Issued
- 2009-05-18
- Publisher
- American Institute of Physics
- Abstract
- We demonstrate low-voltage, solution-processed organic transistors on rough plastic substrates with a carrier mobility over 0.2 cm(2)/V s, a turn-on voltage of near 0 V, and a record low subthreshold slope of similar to 80 mV/decade in ambient conditions. These exceptional characteristics are attributed to (1) a device stacking architecture with a conducting polymeric gate and a double layered dielectric composed of low-temperature cross-linked poly(4-vinylphenol), (2) a low interface trap density achieved by modifying the dielectric surface with a phenyl-terminated self-assembled monolayer from 4-phenylbutyltrichlorosilane, and (3) controlled crystallization of a small-molecule organic semiconductor film with favorable charge transport microstructure and a low bulk trap density as deposited by an optimized solution-shearing process. The device performance under different operating voltages was also examined and discussed.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/9648
- DOI
- 10.1063/1.3133902
- ISSN
- 0003-6951
- Article Type
- Article
- Citation
- APPLIED PHYSICS LETTERS, vol. 94, no. 20, page. 203301, 2009-05-18
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