光电信息大讲堂第四十三讲：纳米结构半导体金属氧化物气体传感技术

报告摘要：

基于半导体金属氧化物的化学气体传感器具有成本低，易操作，灵敏度高，稳定性好，功耗低和易于阵列集成化的特点，在众多场合发挥着重要作用，包括日常生活中常见的监测住宅楼宇中爆炸性气体的泄露程度或者是轿车内气体污染物的浓度。本讲座将详细地介绍这类气体传感器的工作原理以及应用前景，并会以CO气体探测的例子来阐述“原位表征”技术在气体传感器研究中的应用。

Chemoresistive gas sensors based on semiconducting metal oxides (SMOX) are sold in millions for solving applications spanning from the detection of explosive gas leakages in residential premises to hindering the access of pollutants inside cars. They were so successful because they are inexpensive, easy to use, very sensitive and stable, easy to integrate into arrays and low power when realized on the appropriate transducer structures. In this seminar we will examine more in detail the way in which the actual SMOX based gas sensors function, taking into consideration all their relevant parts, and then will use the example of CO detection to illustrate the power of “operando” investigation techniques to explain the dependence of sensor signals on ambient.

报告人介绍：

Nicolae Barsan博士，德国图宾根大学物理与理论化学研究所高级研究员，国际嗅觉与化学传感协会（ISOCS）的创始人及其指导委员会成员，其研究工作侧重于阐明气体和敏感材料表面的相互作用。早在1984年，Nicolae Barsan就开展金属氧化物气体传感器的基础理论与应用研究，2001年，他合作创立了Advanced Sensing Devices（ASD）公司开展技术转化工作，ASD公司后来与知名的Applied Sensors公司合并，在欧洲气体传感器应用开发领域处于领先地位。迄今为止，Barsan发明的气体传感器已通过Applied Senosr公司实现了高达3千万只规模的商业化。

Dr. Nicolae Barsan, Dipl Phys, PhD, Senior Research Scientist, Institute of Physical and Theoretical Chemistry, University of Tübingen, founding member and member of the Steering Committee of the International Society for Olfaction and Chemical Sensing (ISOCS). His research focuses on the understanding and application of surface interactions of materials with gases. Since 1984, when he started his scientific carrier at the Institute of Materials Physics and Technology in Bucharest, he was interested in the basic understanding of phenomena taking place at the surface of metal oxides operated in realistic conditions for gas sensing applications. In 2001, with funding from private investors, he co-founded Advanced Sensing Devices (ASD) with the intention to bring his developments in the field of metal oxide gas sensors to the market. ASD merged with Applied Sensors and established itself as a leading European company in the field of gas sensor technology and application developments. To date, more than 30 million devices, of the type invented by Dr. Barsan, were commercialized by Applied Sensors.