2017
DOI: 10.1088/2053-1591/aa72a8
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Tungsten oxide thin films: detection and trapping of hazardous gases

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Cited by 15 publications
(8 citation statements)
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“…The comparison of present study along with responses observed by other researchers using different nanostructures of WO 3 is shown in Table 1. [42][43][44][45][46][47][48][49][50][51] The present study on the WO 3 thin lm-based NO 2 sensor concludes that sub-ppb level NO 2 detection with high sensitivity and selectivity can be obtained by simple reactive-ion sputtered technique, a scalable process. The WO 3 lm selectivity towards NO 2 was tested in the presence of CO, CO 2 , SO 2 , and NH 3 gases at 150 C. The study clearly indicates the high selectivity of the lm towards NO 2 among other gas species, as represented in Fig.…”
Section: Nitrogen Dioxide (No 2 ) Sensing Characteristics Of the Wo 3mentioning
confidence: 62%
“…The comparison of present study along with responses observed by other researchers using different nanostructures of WO 3 is shown in Table 1. [42][43][44][45][46][47][48][49][50][51] The present study on the WO 3 thin lm-based NO 2 sensor concludes that sub-ppb level NO 2 detection with high sensitivity and selectivity can be obtained by simple reactive-ion sputtered technique, a scalable process. The WO 3 lm selectivity towards NO 2 was tested in the presence of CO, CO 2 , SO 2 , and NH 3 gases at 150 C. The study clearly indicates the high selectivity of the lm towards NO 2 among other gas species, as represented in Fig.…”
Section: Nitrogen Dioxide (No 2 ) Sensing Characteristics Of the Wo 3mentioning
confidence: 62%
“…Pure WO 3 can easily detect oxidizing gases such as NO 2 , SO 2 , O 3 , etc. [ 5 , 6 , 7 , 8 , 9 , 10 ], but more challenging is an enhancement of its sensitivity towards reducing gases (H 2 , CO, NH 3 , etc.). This can be done by the loading of WO 3 material by noble catalysts such as Au, Pt, and Pd [ 1 , 3 , 11 , 12 , 13 ].…”
Section: Introductionmentioning
confidence: 99%
“…Figure 3 shows typical results in the range from 50 to 1500 cm −1 from the samples synthesized at substrate temperatures of 1000, 700 and 400 °C. According to previous work [ 1 , 41 ], the bands situated at around 700 and 800 cm −1 were assigned to W-O stretching modes (S-M), whereas the bands situated at around 130 and 270 cm −1 were associated with W-O bending modes (B-M) of monoclinic WO 3 .…”
Section: Resultsmentioning
confidence: 89%
“…It has been reported by many research groups that the variation in temperature would significantly affect the device sensitivity and response [ 1 , 3 ]. However, it is found in the present investigation that the variation in operating temperature may only slightly affect the performance of the NR-based prototype exposed to NH 3 gas, as shown in Figure 9 .…”
Section: Resultsmentioning
confidence: 99%
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