Nanocrystalline SnO gas sensors in view of surface reactions and modifications

    Authors

    S. Seal;S. Shukla

    Abbreviated Journal Title

    JOM-J. Miner. Met. Mater. Soc.

    Keywords

    ULTRAFINE PARTICLE FILMS; NANOSIZED TIN OXIDE; THIN-FILMS; SENSING; PROPERTIES; SENSITIVITY; ADDITIVES; DIOXIDE; SIZE; H2S; ALCOHOL; Materials Science, Multidisciplinary; Metallurgy & Metallurgical; Engineering; Mineralogy; Mining & Mineral Processing

    Abstract

    The gas-sensing mechanism of an n-type semiconductor (tin dioxide) gas sensor is reviewed in this paper It is demonstrated that very high sensitivity can be obtained only when the crystallite size is less than similar to10 nm. Various mechanisms involving the surface and the bulk modifications of the semiconductor oxide gas sensors are discussed to improve the gas sensitivity. Current challenges and problems in nanocrystalline oxide gas sensors are also presented.

    Journal Title

    Jom-Journal of the Minerals Metals & Materials Society

    Volume

    54

    Issue/Number

    9

    Publication Date

    1-1-2002

    Document Type

    Article

    Language

    English

    First Page

    35

    Last Page

    +

    WOS Identifier

    WOS:000178024600008

    ISSN

    1047-4838

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