| TiO2:Nb2 O5混合晶体响应TMA气体敏感特性研究 |
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| 引用本文： | 裴素华,黄萍.TiO2:Nb2 O5混合晶体响应TMA气体敏感特性研究[J].功能材料与器件学报,2006,12(3):233-236. |
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| 作者姓名： | 裴素华 黄萍 |
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| 作者单位： | 山东师范大学物理与电子科学学院,济南,250014 |
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| 摘 要： | 利用X射线衍(XRD)、扫描电子显微镜(SEM)和器件测试等方法对TiO2:Nb2O5混合晶体结构、表面形貌及敏感机理进行分析与讨论.结果认为:Nb2O5为10%的富钛敏感材料含有大量氧空位,晶粒之间的空隙增大,显著提高了电导率和气敏特性;使器件阻值Ra降低和灵敏度K提高得到统一优化效果;为动物食品测鲜传感器研究开辟了一条新途径.
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| 关 键 词： | TiO2:Nb2O5混合晶体结构 敏感材料 TMA |
| 文章编号： | 1007-4252（2006）03-0233-04 |
| 收稿时间： | 2005-08-10 |
| 修稿时间： | 2005-08-102005-10-08 |
Sensitivity of TiO2 :Nb2 O5 composite crystall oid to trimethylamine |
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| PEI Su-hua,HUANG Ping.Sensitivity of TiO2 :Nb2 O5 composite crystall oid to trimethylamine[J].Journal of Functional Materials and Devices,2006,12(3):233-236. |
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| Authors: | PEI Su-hua HUANG Ping |
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| Abstract: | The structure,morphology and sensing mechanism of TiO_2:Nb_2O_5 composite crystalloid were analyzed by using X-ray diffraction(XRD) and scanning electron microscopy(SEM).The results show that the titanium rich sample with 10% niobium has large amount of oxide vacancy and intergrain porosity augment,that enhances electrical conductivity and gas sensitivity of the material.Resistance R_a and sensitivity K of the sample are improved simultaneously.It may serve as a new way for measuring the freshness of meat and fish. |
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| Keywords: | TiO_2:Nb_2O_5 composite crystalloid structure sensitive material trimethylamine |
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