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YFe1-yCoyO3半导体气敏材料的制备和性能研究
Preparation and Gas-sensing Properties of Semiconducting Materials
【摘要】 用化学共沉淀法制备了YFe1-yCoyO3(0.0≤y≤0.50)固溶纳米晶微粉,并对其制备条件、物相组成、微结构、电导和气敏效应作了系统研究.结果表明:钴B位掺杂铁酸钇材料呈典型的P型半导体导电行为,同温下固溶体电导不仅大于纯相YFeO3的电导而且随湿度增加其电阻迅速下降;243℃下YFe0.9Co0.1O3传感器元件对乙醇有较高的灵敏度和良好的选择性.有望开发为一类新型C2H5OH信息敏感材料.
【Abstract】 The nano-crystal powders of perovskite-type solid solution YFe1-yCoyO3 (0≤y≤0.50) were prepared by chemical coprecipitation. The preparation conditions, phase constituents, conductance and gas-sensing properties were investigated. The results demonstrated that YFe1-yCoyO3 shows p-type semiconducting properties and it has high sensitivity and good selectivity to C2H5OH when y=0.10.
【关键词】 钴掺杂;
YFe1-yCoyO3固溶体;
电导;
酒敏传感器;
【Key words】 cobalt doping; YFe1-yCoyO3 solid solution; conductance: alcohol sensor;
【Key words】 cobalt doping; YFe1-yCoyO3 solid solution; conductance: alcohol sensor;
【基金】 安徽省教育厅自然科学基金(2001kj183)
- 【文献出处】 无机材料学报 ,Journal of Inorganic Materials , 编辑部邮箱 ,2002年03期
- 【分类号】TN304
- 【被引频次】17
- 【下载频次】126