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Polymer blended small molecule organic field effect transistors with improved device-to-device uniformity and operational stability
- Authors
- Kim, Yong-Hoon; Anthony, John E.; Park, Sung Kyu
- Issue Date
- Jul-2012
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Organic field effect transistor; Polymer blending; Device-to-device uniformity; Operational stability
- Citation
- ORGANIC ELECTRONICS, v.13, no.7, pp 1152 - 1157
- Pages
- 6
- Journal Title
- ORGANIC ELECTRONICS
- Volume
- 13
- Number
- 7
- Start Page
- 1152
- End Page
- 1157
- ISSN
- 1566-1199
1878-5530
- Abstract
- We report high performance organic thin-film transistors (OTFTs) with improved device-to-device uniformity and operational stability using polymer-blended small molecule organic semiconductor, 2,8-difluoro-5,11-bis(triethylsilylethynyl) anthradithiophene (diF-TESADT). The diF-TESADT blended with poly(alpha-methylstyrene) was spin-cast to form bottom-contact OTFTs, and an average carrier mobility of more than 0.16 cm(2)/V s with more uniform surface morphology and device-to-device uniformity compared to neat diF-TESADT devices were achieved. Additionally, the polymer-blended OTFTs have shown improved operational stability under gate bias-stress possibly due to blocking of ambient oxygen and moisture by vertically separated insulating matrix polymer. (C) 2012 Elsevier B. V. All rights reserved.
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