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Flexible high mobility pentacene transistor with high-k/low-k double polymer dielectric layer operating at-5V
- Authors
- Lee, Kwang H.; Lee, Kimoon; Oh, Min Suk; Choi, Jeong-M.; Im, Seongil; Jang, Sungjin; Kim, Eugene
- Issue Date
- Feb-2009
- Publisher
- ELSEVIER
- Keywords
- Organic thin-film transistor; Pentacene; Low voltage; Polymer dielectric; High mobility; Flexible
- Citation
- ORGANIC ELECTRONICS, v.10, no.1, pp.194 - 198
- Journal Title
- ORGANIC ELECTRONICS
- Volume
- 10
- Number
- 1
- Start Page
- 194
- End Page
- 198
- ISSN
- 1566-1199
- Abstract
- We report on the fabrication of pentacene-based thin-film transistors (TFTs) with a 230 nm-thick double polymer dielectric composed of 30 nm-thin low-k poly-4-vinyphenol (PVP) and 200 nm-thick high-k poly(vinylidene fluoride/trifluoroethylene) [P(VDF-TrFE)] dielectric on polyethersulfone (PES) films. Our 230 nm-thick double (high-k/low-k) polymer showed a good dielectric strength of similar to 2 MV/cm, a high capacitance of 26 nF/cm(2) with k = similar to 7. Based on this double polymer dielectric, our flexible pentacene TFT displayed a high saturation mobility of 1.22 cm(2)/V s, a threshold voltage of -2.5 V, and on/off ratio of 10(3) stably operating under -5V. (C) 2008 Elsevier B.V. All rights reserved.
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Related Researcher
- Kim, Eu gene
- Engineering (Applied Science)