Oscillation in Response and Recovery Properties of SnO_2 Gas Sensor

作     者：Peng Yang Yanfen Wan Quanxi Cao 

作者机构：School of Technical Physics Xidian University Xi＇an 710071 China 

出 版 物：《稀有金属材料与工程》 (Rare Metal Materials and Engineering)

年 卷 期：2006年第35卷第A03期

页      面：148-151页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：SnO2 gas sensor sensitivity response time recovery time oscillation 

摘      要：Six kinds of Sn(OH)_4 precipitates were prepared by the chemical precipitation method (liquid-phase),of which the pH values are 3.0 (sample 1),4.5 (sample 2),6.0 (sample 3),7.5 (sample 4),9.0 (sample 5) and 10.5 (sample 6),respectively. After washed and dried,the Sn(OH)_4 precipitates were first calcined into tin oxide *** kinds of gas sensors were made from the obtained SnO_2 *** XRD patterns of all the samples were *** sensing properties of all samples to C_2H_5OH and H_2 gases were measured in different gas concentrations and temperatures,including the sensitivities of all samples,their response and recovery *** recovery properties of all samples to C_2H_5OH exhibit the sinusoidal oscillation character.