Tribotronic transistor sensor for enhanced hydrogen detection |
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| Authors: | Yaokun Pang Libo Chen Guofeng Hu Jianjun Luo Zhiwei Yang Chi Zhang Zhong Lin Wang |
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| Affiliation: | 1. Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China;National Center for Nanoscience and Technology(NCNST), Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China;2. Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China;National Center for Nanoscience and Technology(NCNST), Beijing 100190, China;3. Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China;National Center for Nanoscience and Technology(NCNST), Beijing 100190, China;School of Material Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA |
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| Abstract: | Hydrogen detection with a high sensitivity is necessary for preventing potential explosions and fire.In this study,a novel ZnO tribotronic transistor is developed by coupling a ZnO field effect transistor (FET) and triboelectric nanogenerator in free-standing mode and is used as a sensor for hydrogen detection at room temperature.Tribotronic modulated performances of the hydrogen sensor are demonstrated by investigating its output characteristics at different sliding distances and hydrogen concentrations.By applying an external mechanical force to the device for sliding electrification,the detection sensitivity of the ZnO tribotronic transistor sensor is improved,with a significant enhancement achieved in output current by 62 times at 500 ppm hydrogen and 1 V bias voltage.This study demonstrates an extension of the applications of emerging tribotronics for gas detection and a prospective approach to improve the performance of the hydrogen sensor via human-interfacing. |
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| Keywords: | tribotronics triboelectric nanogenerator ZnO hydrogen detection sensitivity |
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