Vertical organic-inorganic hybrid transparent oxide TFTs gated by biodegradable electric-double-layer biopolymer |
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| Affiliation: | 1. School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan, Shandong 250100, China;2. Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 200240, China;3. ARC Centre of Excellence in Exciton Science, School of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia;1. Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials(IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China;2. Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China;1. Department of Mechanical Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, South Korea;2. Department of Chemical Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, South Korea;1. Department of Advanced Materials Engineering for Information and Electronics, Kyung Hee University, Yongin, Gyeonggi-do 446-701, Republic of Korea;2. Department of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Shilim-9-Dong, Gwanak-Gu, Seoul 151-744, Republic of Korea;3. Interface Material and Chemical Engineering Research Center, Korea Research Institute of Chemical Technology, Daejeon 305-343, Republic of Korea;1. Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, PR China;2. Guangzhou New Vision Optoelectronic Co., Ltd., Guangzhou 510530, PR China |
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| Abstract: | Vertical organic-inorganic hybrid oxide-based electric-double-layer (EDL) thin-film transistors (TFTs) are successfully demonstrated. Low-cost biodegradable chitosan biopolymer is proposed as an efficient EDL electrolyte dielectric in such vertical transparent TFTs. The device is completely transparent in the range of visible light and the whole fabrication process is completed at room temperature. It exhibits a good performance with a large output current of ～8 mA/cm2, a large current on/off ratio of ～105, a small subthreshold swing of 0.33 V/dec, and a low operation voltage of only 2 V, respectively. Moreover, an energy band diagram based on vertical EDL modulation is proposed to understand the device mechanism. Such vertical organic-inorganic hybrid transistor with a vertical channel may be very promising for some important applications in the state-of-the-art low-cost portable transparent flexible electronics. |
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| Keywords: | Vertical channel Electric-double-layer Chitosan Organic-inorganic hybrid transistors Transparent electronics |
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