Gas Sensors Based on Conducting Metal Oxides: Basic Understanding, Technology and Applications

Gas Sensors Based on Conducting Metal Oxides: Basic Understanding, Technology and Applications focuses on two distinct types of gas sensors based on conducting metal oxides. Ion conduction, applied in so-called solid-state electrolytic sensors for one, and electronic conduction used in semiconductivity gas sensors for the other. The well-known λ–probe, a key component to optimize combustion in car engines, is an example of the former type, and the in-cabin car air-quality control SnO2 and WO2 sensor array stands for the semiconductivity type. Chapters cover basic aspects of functioning principles and describe the technologies and challenges of present and future sensors.

Provides reader background and context on sensors, principles, fabrication and applicationsIncludes chapters on specific technological applications, such as exhaust sensors, environmental sensors, explosive gases alarms and morePresents a structured presentation that allows for quick reference of vital information

Section 1: Introduction

Section 2: Ion conducting metal oxides based gas sensors 1. Basics of ion conducting metal oxides based gas sensors 1a. Ionic conduction in solids 1b. Principles of gas detection with three phase boundaries 1c. Transduction methodologies 1d. Technological realization 2. Applications of ion conducting metal oxide based gas sensors 2a. Exhaust sensors 2b. Environmental sensors

Section 3: Semiconducting metal oxides based gas sensors 3. Basics of semiconducting metal oxides based gas sensors 3a. Semiconducting metal oxides 3b. Modelling the gas sensing 3c. Experimental investigations 3d. Technological realization 4. Applications of semiconducting metal oxides based gas sensors 4a. Explosive gases alarms 4b. In-cabin air quality sensors for cars 4c. New Developments

Section 4: Conclusion and Outlook