中国科学技术大学火灾科学国家重点实验室
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张永, 易建新. SnO2气体传感器敏感层厚度对乙醇气体响应性能的影响[J]. 传感器与微系统, 2024,(1):52-55+61.
张永, 易建新. SnO2气体传感器敏感层厚度对乙醇气体响应性能的影响[J]. 传感器与微系统, 2024,(1):52-55+61. DOI: 10.13873/J.1000-9787(2024)01-0052-04.
为了探究二氧化锡(SnO
2
)—乙醇响应体系中的敏感层厚度对传感器响应性能的影响,通过静电纺丝法,制备了SnO
2
中空纳米纤维。利用所制备的纳米纤维制作了不同敏感层厚度的电阻型气体传感器,并对所制备的传感器进行了乙醇气体响应性能研究。测试结果表明:敏感层厚度改变了气体传感器的响应值与乙醇气体体积分数在双对数坐标系中的斜率,并且敏感层厚度对该斜率的影响还随着温度的改变而不同;敏感层厚度改变了气体传感器的最佳响应温度。敏感层厚度越小,最佳响应温度越高。目标气体在敏感材料内部的扩散过程中,会吸附在敏感材料表面发生异相催化反应,而气体传感器敏感层的厚度会影响目标气体的扩散,从而改变敏感层内部微环境中的气体成分及其含量,并对气体传感器的响应性能产生影响。
Saito Noriko,Watanabe Ken,Haneda Hajime,Sakaguchi Isao,Shimanoe Kengo.Highly Sensitive Ethanol Gas Sensor Using Pyramid-Shaped ZnO Particles with (0001) Basal Plane[J].The Journal of Physical Chemistry C,2018.
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