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对Zn的评估:WO₃薄膜作为检测NH₃气体的传感层

Anusha¹, Priyanka Kumari², P Poornesh¹

¹Department of Physics, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, India.

|July 8, 2023

概括

添加氧化 (Zn:WO3) 薄膜显示了增强的氨气传感能力. 这一发展为气体检测应用提供了有前途的进展.

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.
纳米技术纳米技术

背景情况:

氧化 (WO3) 是一种有前途的半导体材料,用于气体传感.
兴奋剂WO3可以修改其电子和传感性能.
氨 (NH3) 检测对于环境和工业监测至关重要.

研究的目的:

通过喷雾热解合成原始和Zn-doped WO3 薄膜.
研究合成膜的结构,形态和光学特性.
为了评估 Zn:WO3 薄膜的氨感应性能.

主要方法:

喷雾热解用于薄膜合成.
用于结构分析的X射线衍射 (XRD).
扫描电子显微镜 (SEM) 用于形态学.
光发光 (PL) 光谱用于缺陷分析.
用X射线光电子光谱 (XPS) 检测表面构成.
在250°C的氨气传感测量.

主要成果:

XRD证实了沿着 (200) 平面的突出晶石方向.
在Zn:WO3薄膜中,SEM揭示了具有较小粒度 (62nm) 的精确粒度.
PL和XPS研究表明氧气空缺的形成.
与原始WO3相比,:WO3薄膜在1ppmNH3度下表现出增强的氨感应性能.

结论:

兴奋剂有效地改变了WO3薄膜的特性.
增强的传感性能归因于改进的形态和缺陷工程 (氧气空缺).
:WO3薄膜显示了氨气传感应用的巨大潜力.

关键词:

在 NH3 传感器上.在 WO3 WO3 WO3 WO3 WO3 WO3 在Zn兴奋剂中使用.缺陷缺陷缺陷缺陷缺陷

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