Chinese Journal of Liquid Crystals and Displays, Volume. 37, Issue 7, 797(2022)
High sensitivity organic transistor nitrogen dioxide sensor based on three component conjugated polymer
Fig. 1. （a）Sensor device structure；（b）Polymer semiconductor synthesis route.
Fig. 2. Polymer films with different concentrations.（a）Surface morphology；（b）Pore size distribution；（c）Film thickness variation；（d）Percentage change in pore size and pore area.
Fig. 3. Transfer characteristic curves of BTNIDNBIBDF-50 sensor at different concentrations.（a）3 mg/mL；（b）2 mg/mL；（c）1 mg/mL；（d）Electrical performance parameters versus concentration of polymer solution curve.
Fig. 4. NO2 sensing characteristics of BTNIDNBIBDF-50 sensor at different concentrations.（a）3 mg/mL；（b）2 mg/mL；（c）1 mg/mL.
Fig. 5. BTNIDNBIBDF-50 sensors of different concentrations.（a）Source leakage current versus solution concentration；（b）Threshold voltage versus solution concentration.
Fig. 6. Sensitivity curves of NO2 gas with different concentrations.（a）3 mg/ mL；（b）2 mg/ mL；（c）1 mg/ mL；（d）Sensitivity curve versus concentration of NO2.
Fig. 7. （a）Schematic diagram of the selectivity test device；（b）Current change of BTNIDNBIBDF-50 to different gases at concentration of 2 mg/mL.
Fig. 8. Current change of 2 mg/mL BTNIDNBIBDF-50 films to different gases
Fig. 9. Cyclic test curve of NO2 gas at 2 mg/mL concentration of BTNIDNBIBDF-50
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Guan-long WANG, Xiao-hong WANG, Long-zhen QIU. High sensitivity organic transistor nitrogen dioxide sensor based on three component conjugated polymer[J]. Chinese Journal of Liquid Crystals and Displays, 2022, 37(7): 797
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Received: Mar. 30, 2022
Accepted: --
Published Online: Jul. 7, 2022
The Author Email: Long-zhen QIU (lzhqiu@hfut.edu.cn)
