用于场效应氨传感器的纳米纤维织构有机半导体薄膜

IF 1.8 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Yao Tang;Qing Ma;Jie Lu;Xingyu Jiang;Lizhen Huang;Lifeng Chi;Litao Sun;Binghao Wang
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引用次数: 0

摘要

场效应气体传感器集成了气体传感器和放大晶体管,具有优异的传感性能。在这里,我们报告了具有纳米纤维纹理半导体薄膜的有机薄膜晶体管(OTFTs)与具有均匀/平坦半导体薄膜的传统OTFTs相比,表现出更好的氨响应。绝缘聚合物添加剂的引入促进了涂层过程中半导体纳米纤维的形成。研究了IPA、有机半导体/IPA共混比例和溶剂对otft传感性能的影响。结果表明,使用SU8作为IPA,氯仿作为溶剂,在底部形成缠绕在一起的半导体纳米纤维(直径约50 nm)。由此产生的otft对氨的灵敏度非常高,分别达到13676%/ppm(电流)和457%/ppm(导通电压)。通过有限元分析模拟了气体分子的吸附/解吸过程以及比表面积对感官性能的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Nanofiber-Textured Organic Semiconductor Films for Field-Effect Ammonia Sensors
Field-effect gas sensors, integrating the gas sensor and amplification transistor, exhibit excellent sensory performance. Here we report organic thin-film transistors (OTFTs) with nanofiber-textured semiconductor films that exhibit superior ammonia response compared to conventional OTFTs with uniform/flat semiconductor films. The introduce of insulating polymer additives (IPAs) facilitates the formation of semiconducting nanofiber during coating. The effects of IPAs, organic semiconductor/IPA blend ratios and solvents on OTFT-based sensory performance are studied. The results show that the use of SU8 as IPA and chloroform as solvent form intertwined semiconductor nanofibers (∼50 nm in diameter) at the bottom. The resulting OTFTs exhibit extraordinarily high sensitivities to ammonia, which reach 13676%/ppm (current) and 457%/ppm (turn-on voltage), respectively. Finite element analysis is conducted to simulate the adsorption/desorption processes of gas molecules and the effect of specific surface area on sensory performance.
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来源期刊
CiteScore
3.90
自引率
17.60%
发文量
10
审稿时长
12 weeks
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