Understanding Fundamental Mechanisms in Gas Sensing to Aid Future Design

了解气体传感的基本机制以帮助未来的设计

• 批准号: 2247996
• 金额: --
• 依托单位: University College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2247996
• 关键词: Understanding; Fundamental; Mechanisms; Gas; Sensing

Semiconducting Gas Sensors have been studied for over 60 years and are routinely used as early detection systems against life threatening gases such as CO2, CO and CH4. Despite these 60 years of research, the field relies almost entirely on two semiconductor systems, SnO2 and WO3. Compounding this, the fundamental mechanisms that underpin their performance as gas sensors are still not well understood. In this study, we will use a combination of computational chemistry techniques and advanced spectroscopic techniques to provide new insights into the mechanisms occurring on the surface of these semiconductors under operating conditions. We will use these insights to yield design criteria for transforming other semiconducting oxides into efficient gas sensors, ensuring the UK remains world leading in this area.

已经研究了60多年的半导体气体传感器，并通常用作抗生命的气体（例如CO2，CO和CH4）的早期检测系统。尽管进行了60年的研究，但该领域几乎完全依靠两个半导体系统SNO2和WO3。使这一点更加复杂，基于其作为气体传感器的性能的基本机制仍然不太了解。在这项研究中，我们将使用计算化学技术和高级光谱技术的组合，为在操作条件下这些半导体表面发生的机制提供新的见解。我们将使用这些见解来产生设计标准，以将其他半导体氧化物转化为有效的气体传感器，从而确保英国在该地区保持世界范围。