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国内外对气敏半导体的研究已作了很多工作,也取得了一定的应用。但气敏元件的选择性不好使它的广泛应用受到了限制。所以提高气敏元件的选择性是当前气敏半导体研究的重要课题。 国外主要研究Sno_2、Zno为基体的气敏半导体元件。从七十年代开始研究希土的ABO_3型和A_2BO_4型化合物的气敏性。认为希土和镍或钴的复合氧化物有可能定量检测乙醇或氧气。还研究了
Domestic and foreign research on gas-sensitive semiconductors have done a lot of work, but also made some applications. However, the poor selectivity of the gas sensor makes its wide application is limited. Therefore, to improve the selectivity of gas sensors is an important issue in current gas-sensitive semiconductors. Foreign mainly Sno_2, Zno as the base of the gas-sensitive semiconductor components. From the seventies began to study the soil gas ABO_3 type and A_2BO_4 type compound gas sensitivity. It is considered that it is possible to quantitatively detect ethanol or oxygen in a rare earth and a nickel or cobalt complex oxide. Also studied