响应苯类气体敏感材料改性与器件研究  

Investigation of Element and Modifying Properties of Sensitive Material Response to Benzene Hydrocarbon

作　　者：程文雍[1] 裴素华[1] 

机构地区：[1]山东师范大学物理与电子科学学院,济南250014

出　　处：《传感技术学报》2006年第3期559-561,601,共4页Chinese Journal of Sensors and Actuators

摘　　要：采用溶胶—凝胶方法(sol-gel)制备了含钇纳米微结构γ-Fe2O3气体敏感材料,并用DAT等方法进行表征与测量。结果表明,掺入适量Y2O3后能使γ-Fe2O3的相变温度提高到618℃,从而改善了γ-Fe2O3基苯类气敏元件的热稳定性;后用硫酸根离子和金离子进行适量掺杂,提高了元件响应苯类气体的敏感特性;从而为苯类有机气体敏感元件研制提供了一条新途径。The sol-gel method is used to prepare nm mini-structure sensitive γ-Fe2O3 material. DAT and other instruments were used to characterize the properties of the material. The result suggest appropriate Y2O3 doping can make the phase change temperature of γ-Fe2O3 climb to 618℃, and the thermal stability of T-Fe2O3 based sensitive elements is improved. Then the sensitive properties to benzene hydrocarbon gases can be improved by appropriate SO4^2- and Au^3＋ doping. So a new approach was obtained to develop sensitive elements response to benzene hydrocarbon gases.

关 键 词：Γ-FE2O3 钇 苯类气体 硫酸根离子 金离子 

分 类 号：TN304.92[电子电信—物理电子学]