【摘要】 <正> 烧结型半导体气敏元件的主要材料是 SnO-2、ZnO和γ-Fe₂O₃,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SnO₂受湿度影响较大;ZnO的工作温度高、功耗大;而γ-Fe₂O₃虽有更多还原

【Abstract】 Some gas-sensitive elements were prepared by sintering the mixture of SnO₂, ZnO andFe₂O₃. Most of the elements reported here were found to have higher sensitivity to C₄H₁₀,shorter response time and small dissipation value.更多还原