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(α-methylstyrene) was spin-cast to form bottom-contact OTFTs, and an average carrier mobility of more than 0.16 cm2/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.
|Number of pages||6|
|State||Published - Jul 2012|
Bibliographical noteFunding Information:
This work was supported in part by Basic Science Research Program through a National Research Foundation of Korea (NRF) grant funded by the Ministry of Education, Science, and Technology (No. 2010-0002623 ), and also was financially supported by the Ministry of Knowledge Economy (MKE), Korea Institute for Advancement of Technology (KIAT) through the Inter-ER Cooperation Projects.
- Device-to-device uniformity
- Operational stability
- Organic field effect transistor
- Polymer blending
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Chemistry (all)
- Condensed Matter Physics
- Materials Chemistry
- Electrical and Electronic Engineering