Nanoscale Surface Investigations of Semiconducting Metal Oxides

这项研究项目得到分析和表面化学计划的支持，研究半导体金属氧化物二氧化钛、二氧化锡和氧化锌的表面结构、缺陷结构和表面化学。利用扫描探针显微镜，结合超高真空电子能谱方法，详细地了解了表面和缺陷结构对这些重要材料的表面化学的影响。杜兰大学物理系的乌里克·迪博尔德教授和她的团队正在将这些信息应用于新型气体传感设备的开发。高温半导体氧化物传感器被用于各种气体传感和监测应用。对这些氧化物材料的表面结构和表面化学的详细了解对于在这些应用中设计坚固的传感器是至关重要的。迪博尔德教授对这类材料的表面结构和化学的研究提供了这种信息和理解。

This research project, supported in the Analytical and Surface Chemistry Program, examines the surface structure, defect structure, and surface chemistry of the semiconducting metal oxides TiO2, SnO2, and ZnO. Using scanning probe microscopy, coupled with UHV electron spectroscopic methods, a detailed understanding of the effects of surface and defect structure on the surface chemistry of these important materials is obtained. Professor Ulrike Diebold and her group in the Department of Physics at Tulane University are applying this information to the development of novel gas sensing devices. High temperature semiconducting oxide sensors are used in a variety of gas sensing and monitoring applications. The detailed understanding of the surface structure and surface chemistry of these oxide materials is crucial to the design of robust sensors in these applications. Professor Diebold's studies of the surface structure and chemistry of this class of materials is providing this information and understanding.