Sensing properties of atmospheric plasma-sprayed WO3 coating for sub-ppm NO2 detection

Zhang, Chao; Debliquy, Marc; Boudiba, Abdelhamid; Liao, Hanlin; Coddet, Christian

doi:10.1016/j.snb.2009.11.006

Cited by 146 publications

(45 citation statements)

References 47 publications

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“…Since NO 2 is an oxidizing agent, changes in material resistance should be mainly caused by gas-tungsten oxide chemisorption processes rather than chemical bonds with atomic oxygen [30]. Therefore, NO 2 was adsorbed onto tungsten oxide surface and the oxygen of NO 2 acts as an acceptor, extracting electrons from the conduction band of the oxide, according to the following equations [31][32][33].…”

Section: Gas-response Measurementsmentioning

confidence: 99%

Solvothermally synthesized tungsten oxide nanowires/nanorods for NO2 gas sensor applications

Qin

Wang

et al. 2011

Journal of Alloys and Compounds

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Section: Gas-response Measurementsmentioning

confidence: 99%

Solvothermally synthesized tungsten oxide nanowires/nanorods for NO2 gas sensor applications

Qin

Wang

et al. 2011

Journal of Alloys and Compounds

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“…Among them, tungsten trioxide (WO 3 ) is used in many electronic devices because of its tunable properties of chemical composition, surface morphological, optical absorption in visible range and high the rmalstability 6,7 . Several preparation techniques have been used to deposit tungsten oxide thin films, including sol-gel, spray pyrolysis, chemical vapour deposition, RF sputtering, plasma evaporation, electrodeposition, etc [8][9][10][11][12][13][14][15][16][17][18] . In fact, spray pyrolysis is one of the most versatile techniques to deposit oxide films, allowing the control of many properties of the films by changing the preparation parameters of the technique.…”

Section: Introductionmentioning

confidence: 99%

Growth and Characterization of Jet Nebulizer Spray Deposited n-type WO3 thin films for Junction Diode Application

Shanmugasundaram¹,

Thirunavukkarasu²,

Ramamurthy³

et al. 2017

Orient. J. Chem

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The n-type tungsten oxide (WO 3 ) polycrystalline thin films have been prepared at an optimized parameters (0.20M, 5 ml and 500 o C) using jet nebulizer spray pyrolysis (JNSP) technique. Such prepared WO 3 films were characterized by XRD, SEM, EDAX, UV-vis from I-V. The XRD pattern of the optimized WO 3 film reveals the monoclinic structure. The SEM and EDAX images shows that the surface morphological variations and elements present were confirmed. The optical properties were recorded by UV-vis spectrum and the maximum band gap value was observed as 3.86 eV for 500°C. The maximum conductivity of the prepared WO 3 was recorded as 1.201 x 10 -8 S/cm from I-V characterization for 500°C.Using J-V plot, the diode parameters of n-WO 3 /p-Si prepared at 500°C with 0.2 M and 5 ml were measured under dark and illumination. The ideality factor (n) and barrier height (Φ b ) values of n-WO 3 /p-Si diode are obtained as 5.8 and 0.80 eV in dark and 3.9 and 0.81 eV under illumination.

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“…For most of these applications, thin films of WO3 with nanometer thickness are usually deposited on glass or polymeric substrates. A variety of conventional deposition methods have been used to prepare WO3 films, such as direct current (dc) or radio frequency (rf) magnetron sputtering [10][11][12][13][14][15][16][17][18], sol-gel methods [19][20][21], plasma spraying method [22], electron beam evaporation [23,24],thermal evaporation [25,26] and hydrothermal methods [27].Tungsten oxide has a cubic structure which is also described by "empty-perovskite" type structure formed by WO3. In octahedral structure atoms are share at corners [8,10].…”

Section: Introductionmentioning

confidence: 99%

A Review on WO3 films prepared by various methods

2015

Appl. Sci. Lett.

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Recent developments in the synthesis of transition metal oxides in the form of thin films have opened up opportunities in the construction of electrochromic devices with enhanced properties. Transition metal oxides like WO3 and MoO3 have good electrochromic properties and these oxides can also change their optical properties when a voltage pulse is applied. These electrochromic materials are used for displays, gas sensors, rear-view mirrors and smart windows for energy saving applications. There are numbers of different techniques used for the deposition of stable thin films of these oxide materials. Tungsten Oxide (WO3) is the best suited material for energy conservation applications. Thin films of WO3 are deposited by various techniques that offers flexibility, allows the fabrication of required topographical, physical, crystallographic, desired geometrical and metallurgical structures. This review paper is aimed to summarize applications of WO3 thin films as an electrochromic material and the effect of various deposition techniques on its electrochromic and optical properties.

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Sensing properties of atmospheric plasma-sprayed WO3 coating for sub-ppm NO2 detection

Cited by 146 publications

References 47 publications

Solvothermally synthesized tungsten oxide nanowires/nanorods for NO2 gas sensor applications

Solvothermally synthesized tungsten oxide nanowires/nanorods for NO2 gas sensor applications

Growth and Characterization of Jet Nebulizer Spray Deposited n-type WO3 thin films for Junction Diode Application

A Review on WO3 films prepared by various methods

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