2012
DOI: 10.1016/j.snb.2011.11.038
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Low temperature CO sensitive nanostructured WO3 thin films doped with Fe

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Cited by 84 publications
(25 citation statements)
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“…1 Tungsten oxide (WO 3 ), a popular n-type semiconductor with a relatively wide band gap of 2.6 eV, for its sensitive dependence of electrical resistance on exposed atmosphere, is found to be an excellent chemical sensor material. [2][3][4][5][6][7][8][9][10][11][12][13][14] In fact, it has exhibited an excellent response to a variety of poisonous, explosive and volatile organic compounds (VOCs) including NO x , 2-4 H 2 S, 5-6 CO, 7 H 2 , 8 ethanol, [9][10][11] acetone, [12][13][14] etc. Consider the assembly of 0D nanoparticle, WO 3 hollow nanospheres provide high surface area for chemical reaction and porous structure for effective gas diffusion and therefore exhibit better sensor performance than the bulk WO 3 .…”
Section: Introductionmentioning
confidence: 99%
“…1 Tungsten oxide (WO 3 ), a popular n-type semiconductor with a relatively wide band gap of 2.6 eV, for its sensitive dependence of electrical resistance on exposed atmosphere, is found to be an excellent chemical sensor material. [2][3][4][5][6][7][8][9][10][11][12][13][14] In fact, it has exhibited an excellent response to a variety of poisonous, explosive and volatile organic compounds (VOCs) including NO x , 2-4 H 2 S, 5-6 CO, 7 H 2 , 8 ethanol, [9][10][11] acetone, [12][13][14] etc. Consider the assembly of 0D nanoparticle, WO 3 hollow nanospheres provide high surface area for chemical reaction and porous structure for effective gas diffusion and therefore exhibit better sensor performance than the bulk WO 3 .…”
Section: Introductionmentioning
confidence: 99%
“…Since the radius of Fe 3+ is almost similar to that of W 6+ , a small distortion in the crystal lattice is observed to the WO 3 doped with Fe. In this case a small shift in the diffraction peaks is present and a number of defects in the film could also be produced, making this film a better candidate for a gas detecting [22,42]. Likewise, the W 6+ is octahedral coordinated with O 2− , and in the crystal of iron oxide the field stabilization energy of Fe 3+ is higher for octahedral orientation than for tetrahedral orientation.…”
Section: Resultsmentioning
confidence: 99%
“…In the development of gasand/or VOC-sensors, metal oxides such as TiO 2 , SnO 2 , WO 3 , and ZnO are widely used as sensing components of analytical signal transduction systems, because of their high sensitivity and stability [2,3]. Among many other oxides, tungsten (VI) oxide (WO 3 ) is a very attractive material due to its relative chemical stability, robustness, inherent electrical conductivity, and good sensitivity towards various gaseous materials including many VOCs [4][5][6]. Various WO 3 -based structures are also used in lithium-ion batteries [7] and solar energy conversion systems [8][9][10][11][12].…”
Section: Introductionmentioning
confidence: 99%