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W/Mo/Cr 兴奋剂调节了VO₂的负-正反向气体传感行为

Lei Miao¹, Yibei Xue¹, Peng Song¹

¹Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Sendai 980-8577, Japan.

|January 9, 2025

概括

在二氧化瓦纳 (VO2) 中的元素兴奋剂调节了气体感应行为. 用W,Mo或Cr进行兴奋剂会诱导反转传感,为气体传感器理论和材料科学提供新的见解.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
固态物理固态物理

背景情况:

异常气体传感行为需要对现有理论进行重新评估.
要素兴奋剂被探索为一种诱导特定气体感应反应的方法.

研究的目的:

调查元素化VO2的反转气体传感行为.
了解W,Mo和Cr兴奋剂如何影响VO2的气体感应特性.

主要方法:

合成W/Mo/Cr-dopedVO2的样本.
对气体感应行为进行实验性调查.

主要成果:

兴奋剂调节气体感应行为与相反的方向.
W-兴奋剂维持了抵抗性降低感应 (-n类型).
由于费米水平的降低,Mo/Cr-doping通过Schottky屏障形成诱导反转传感 (-p类型).

结论:

元素兴奋剂提供了一种控制和逆转VO2中的气体传感机制的途径.
施托基屏障的形成是实现Mo/Cr-doped VO2中的反转传感的关键.
这项工作为气体传感理论提供了新的视角.

关键词:

VO2 ((M1)) 的情况.兴奋剂的使用兴奋剂的使用气体感应行为气体感应行为逆转的反转方式模块化调制的方法阴性 - 阳性的.

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相关概念视频

Properties of Transition Metals

Properties of Transition Metals

Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.