【摘 要】
：
烧结型半导体气敏元件的主要材料是 SnO-2、ZnO和γ-Fe_2O_3,虽然三种金属氧化物都是属于n型半导体,但由于各自的晶体和电性能的差异,所以过去人们多以单一组份为母体,掺入
【机 构】
：
江西大学化学系,江西大学化学系,江西大学物理系,江西大学物理系
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烧结型半导体气敏元件的主要材料是 SnO-2、ZnO和γ-Fe_2O_3,虽然三种金属氧化物都是属于n型半导体,但由于各自的晶体和电性能的差异,所以过去人们多以单一组份为母体,掺入少量的添加物和催化剂来制作气敏元件。这三种金属氧化物制作的单组份元件都有不足之处,如SnO_2受湿度影响较大;ZnO的工作温度高、功耗大;而γ-Fe_2O_3虽有
The main materials of the sintered semiconductor gas sensor are SnO-2, ZnO and γ-Fe_2O_3. Although all three metal oxides belong to the n-type semiconductor, due to the difference of their respective crystal and electrical properties, Components of the mother, mixed with a small amount of additives and catalysts to make gas sensors. These three kinds of metal oxide single-component components have shortcomings, such as SnO_2 by humidity greater impact; ZnO high operating temperature, power consumption; and γ-Fe_2O_3 although
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