Organic thin-film transistors with bilayer of rubbed and evaporated hydrocarbon-based acene as active layer |
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| Affiliation: | 1. State Key Laboratory of ASIC & System, School of Microelectronics, Fudan University, Shanghai, China;2. Shanghai Huali Microelectronics Corporation, Shanghai, China;1. Department of Physics, Faculty of Science, Suez Canal University, Ismailia, Egypt;2. Department of Materials Science and Nanotechnology Engineering, Abdullah Gül University, Kayseri, Turkey;3. Physics Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia;4. Department of Physics, Faculty of Science, Fırat University, Elazig, Turkey;5. Nanoscience and Nanotechnology Laboratory, Fırat University, Elazig, Turkey;1. Institute of Super-microstructure and Ultrafast Process in Advanced Materials, School of Physics and Electronics, Central South University, Changsha, Hunan 410083, PR China;2. Hunan Key Laboratory for Super-microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha, Hunan 410083, PR China;3. Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, Erwin-Schrödinger-Straße 46, 67663 Kaiserslautern, Germany;4. Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627, USA;1. Institute of Super-Microstructure and Ultrafast Process in Advanced Materials, School of Physics and Electronics, Central South University, Changsha, Hunan 410083, PR China;2. Hunan Key Laboratory for Super-Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha, Hunan 410083, PR China;3. Department of Physics and Astronomy, University of Rochester, Rochester NY14627, USA;1. Department of Physics, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan;2. National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan;3. Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, 305-8571, Japan;4. Department of Applied Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan |
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| Abstract: | We have investigated organic thin-film transistors (OTFTs) with a bilayer of rubbed and evaporated hydrocarbon-based acene 2,7-dioctyl1]benzothieno3,2-b]1]benzothiophene (C8-BTBT) as an active layer. Using a rubbing process after spin-coating the C8-BTBT, crystallinity of the C8-BTBT thin film was improved and resultant superior OTFT characteristics were realized. We obtained a field-effect mobility of 1.6 cm2/Vs, a threshold voltage of −8.2 V, an on-off ratio of 106, and a subthreshold swing of 55 mV/decade. |
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| Keywords: | Organic transistor |
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