Semiconductor gas sensors based on nanostructured tungsten oxide

Solis, J. L.; Saukko, Sami; Kish, László B.; Granqvist, Claes‐Göran; Lantto, V.

doi:10.1016/s0040-6090(01)00991-9

Cited by 232 publications

(122 citation statements)

References 20 publications

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“…WO 3 is of great interest because of its electrochromic [67], gas sensing [68,69], and catalytic [70] properties, many of which depend on morphological characteristics such as particle size, shape and structure. Thus, a considerable effort has been devoted to the synthesis of nanostructured WO 3 .…”

Section: Pyrolysis Of the Organometallic Derivatives Of The Cyclophosmentioning

confidence: 99%

Organometallic Derivatives of Cyclotriphosphazene as Precursors of Nanostructured Metallic Materials: A New Solid State Method

Dı́az

Valenzuela

Zúñiga

et al. 2009

J Inorg Organomet Polym

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Section: Pyrolysis Of the Organometallic Derivatives Of The Cyclophosmentioning

confidence: 99%

Organometallic Derivatives of Cyclotriphosphazene as Precursors of Nanostructured Metallic Materials: A New Solid State Method

Dı́az

Valenzuela

Zúñiga

et al. 2009

J Inorg Organomet Polym

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“…Particularly, tungsten and molybdenum oxide films have been the focus of extensive scientific investigations due to their prospective technological applications in (i) electrochromic devices, 1,2 (ii) gasochromic sensors, 3,4 and (iii) electrocatalysis. 5,6 However, their most intensively investigated property so far is the electrochromism.…”

Section: Introductionmentioning

confidence: 99%

Hot-filament metal oxide deposition (HFMOD): a novel method for depositing thin films of metallic oxides

Rouxinol¹,

Trasferetti²,

Landers³

et al. 2004

J. Braz. Chem. Soc.

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O presente artigo descreve um novo método para a síntese de filmes finos de óxidos metálicos. Um filamento de metal, que pode ser aquecido por uma fonte de corrente alternada é instalado numa câmara de vácuo. Por meio de um fluxômetro de massa, oxigênio pode ser admitido no interior da câmara. Da reação entre o oxigênio e o metal do filamento aquecido, espécies de óxidos voláteis Me x O y , onde Me é o metal, são formadas, se condensando num substrato colocado próximo ao filamento, formando o filme. Foi observado que os filmes finos de W x O y e Mo x O y podem ser depositados de forma satisfatória por este novo método. Embora várias outras técnicas de análise tenham sido usadas para caracterizar os óxidos, esta nota enfatiza os resultados obtidos por espectroscopia de fotoelétrons de raio-X (XPS).This short report describes a novel method for the synthesis of metal oxide thin films. The experimental setup consists of a metal filament installed inside a vacuum chamber. The filament can be heated by an ac power supply while oxygen is admitted into the chamber using a mass flowmeter. From reactions between oxygen and the heated metal filament, volatile oxide species, Me x O y , where Me is the metal, can be formed, condensing on a nearby substrate. We have observed that thin films of W x O y and Mo x O y can be satisfactorily deposited by this novel method. Although several techniques were used to characterize the oxides, this note emphasizes the results obtained by X-ray Photoelectron Spectroscopy (XPS).

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“…More recently, other oxide materials, such as WO 3 , TiO 2 , In 2 O 3 , Ga 2 O 3 etc. have been used successfully to design conductometric gas sensors as well [9,[11][12][13][14][15] (see Table 1). …”

Section: Binary Metal Oxidesmentioning

confidence: 99%

“…In addition, the signal depends on the flow rate of the gas to the surface, and on the partial pressures of water vapor and oxygen [8]. At the same time, however, experiments carried out by Solis et al [13] showed that WO 3 -based sensors have unique and excellent sensitivity to low concentrations of H 2 S in air at room temperature.…”

Section: Metal Oxide Comparison and Selectionmentioning

confidence: 99%

Material Design for Metal Oxide Chemiresistive Gas Sensors

Han¹,

Cho²

2013

Journal of Sensor Science and Technology

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This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License(http://creativecommons.org/licenses /bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Journal of SensorScience and Technology Vol. 22, No. 1 (2013) pp. 1- AbstractMetal oxides designed for application in conductometric gas sensors and approaches used for synthesis of metal oxides with improved gas sensing characteristics are discussed in present article.

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Semiconductor gas sensors based on nanostructured tungsten oxide

Cited by 232 publications

References 20 publications

Organometallic Derivatives of Cyclotriphosphazene as Precursors of Nanostructured Metallic Materials: A New Solid State Method

Organometallic Derivatives of Cyclotriphosphazene as Precursors of Nanostructured Metallic Materials: A New Solid State Method

Hot-filament metal oxide deposition (HFMOD): a novel method for depositing thin films of metallic oxides

Material Design for Metal Oxide Chemiresistive Gas Sensors

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