Title

Nanocrystalline SnO gas sensors in view of surface reactions and modifications

Authors

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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