...
首页> 外文期刊>Materials science and engineering >The role of morphology and crystallographic structure of metal oxides in response of conductometric-type gas sensors
【24h】

The role of morphology and crystallographic structure of metal oxides in response of conductometric-type gas sensors

机译:金属氧化物的形态和晶体结构在电导式气体传感器响应中的作用

获取原文
获取原文并翻译 | 示例
           

摘要

This review paper discusses the influence of morphology and crystallographic structure on gas-sensing characteristics of metal oxide conductometric-type sensors. The effects of parameters such as film thickness, grain size, agglomeration, porosity, faceting, grain network, surface geometry, and film texture on the main analytical characteristics (absolute magnitude and selectivity of sensor response (S), response time (τ_(res)), recovery time (τ_(rec)), and temporal stability) of the gas sensor have been analyzed. A comparison of standard polycrystalline sensors and sensors based on one-dimension structures was conducted. It was concluded that the structural parameters of metal oxides are important factors for controlling response parameters of resistive type gas sensors. For example, it was shown that the decrease of thickness, grain size and degree of texture is the best way to decrease time constants of metal oxide sensors. However, it was concluded that there is not universal decision for simultaneous optimization all gas-sensing characteristics. We have to search for a compromise between various engineering approaches because adjusting one design feature may improve one performance metric but considerably degrade another.
机译:本文综述了形态和晶体结构对金属氧化物电导型传感器气敏特性的影响。诸如薄膜厚度,晶粒大小,团聚,孔隙率,刻面,晶粒网络,表面几何形状和薄膜质地等参数对主要分析特性(传感器响应的绝对幅度和选择性(S),响应时间(τ_(res )),分析了气体传感器的恢复时间(τ_(rec))和时间稳定性。进行了标准多晶传感器和基于一维结构的传感器的比较。结论是,金属氧化物的结构参数是控制电阻型气体传感器响应参数的重要因素。例如,已经表明,减小厚度,晶粒尺寸和织构度是减小金属氧化物传感器的时间常数的最佳方法。然而,得出的结论是,对于同时优化所有气体传感特性并没有统一的决定。我们必须在各种工程方法之间寻求折衷方案,因为调整一种设计功能可能会改善一种性能指标,但会大大降低另一种性能指标。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号