The Influence of Platinum Dopant on the Characteristics of SnO&lt;sub&gt;2&lt;/sub&gt;Thin Film for Gas Sensor Application

Sujitno, Tjipto; Sudjatmoko, Sudjatmoko

doi:10.17146/aij.2006.118

Cited by 4 publications

(6 citation statements)

References 10 publications

(16 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There is an increase and decrease in the sensitivity indicates the adsorption and desorption phenomenon of the gas. The higher sensitivity may return to the optimum number of inequality on the porosity, largest surface area, larger rate of oxidation and the optimum surface roughness [25]. The sensitivity as well as response time depend on operating temperature since the chemical kinetics in solid-gas reaction is governed by the dependence of temperature [26].…”

Section: Response and Recovery Of The Sensormentioning

confidence: 99%

Preparation and characterization of mixed SnO2:CdO thin films as gas sensor

Suhail¹

2019

IJP

View full text Add to dashboard Cite

In this study, tin oxide (SnO2) and mixed with cadmium oxide (CdO) with concentration ratio of (5, 10, 15, 20)% films were deposited by spray pyrolysis technique onto glass substrates at 300ºC temperature. The structure of the SnO2:CdO mixed films have polycrystalline structure with (110) and (101) preferential orientations. Atomic force microscopy (AFM) show the films are displayed granular structure. It was found that the grain size increases with increasing of mixed concentration ratio. The transmittance in visible and NIR region was estimated for SnO2:CdO mixed films. Direct optical band gap was estimated for SnO2 and SnO2 mixed CdO and show a decrease in the energy gap with increasing mixing ratio. From Hall measurement, it was found that all the films prepared possess n-type carriers of the charge. The maximum sensitivity of SnO2:CdO mixed films toward NO2 gas was achieved at (10) mixed concentration ratio of CdO at the optimal operating temperature 200°C and maximum sensitivity is equal to (101.75%) with response time (14.6 s) and recovery time (57.0 s).

show abstract

Section: Response and Recovery Of The Sensormentioning

confidence: 99%

Preparation and characterization of mixed SnO2:CdO thin films as gas sensor

Suhail¹

2019

IJP

View full text Add to dashboard Cite

show abstract

“…[8][9][10] Sensing properties such as sensitivity, selectivity, or working temperature can be improved by several approaches such as modification of the semiconducting metal oxides by different nanostructures. [11][12][13] One of the characteristics of these nanomaterials is their high surface to volume ratio. These nanomaterials also improve the adsorption of CH 4 on the sensor and can increase the sensitivity of the device because of providing more effective collision between analytes and the sensing nanomaterials.…”

Section: Recognitionmentioning

confidence: 99%

“…[11][12][13] For instance, Cabot et al 11 studied the correlation between the catalytic activity and the response of different types of Pt-and Pd-modified SnO 2 sensors to CH 4 as target gas. Sujitno and Sudjatmoko also found the influence of Pt dopant on SnO 2 thin film for significantly reducing the resistance of thin film.…”

Section: Articlementioning

confidence: 99%

“…Sujitno and Sudjatmoko also found the influence of Pt dopant on SnO 2 thin film for significantly reducing the resistance of thin film. 12 Sujitno et al 12 measured the sensitivity of Pt-covered and Ca-doped SnO 2 sensors to CH 4 . In addition, Schiermeier 1 investigated the effects of the nanocomposites of Sn/In/TiO 2 on the performance of the CH 4 sensors.…”

Section: Articlementioning

confidence: 99%

“…These results are also in good agreement Operating temperature is also defined as temperature at which the resistance of the sensor reaches a constant value. 12 One of the disadvantages of the semiconductingbased sensors is that, they usually operate at temperatures usually between 300-400 C. 18 This is due to fact that, the adsorbing behavior of CH 4 on solid supports such as SnO 2 is dependent to the temperature. 12 Figure 5 shows the diagram of resistance versus temperature for thin film modified on the SnO 2 nanopowder as solid support.…”

Section: Figures 2(a) and (B)mentioning

confidence: 99%

See 2 more Smart Citations

Selective Methane Sensors Based on Tungsten Carbides/Tin Oxide and Tungsten/Tin Oxide Core–Shells Modified on Interdigitated Electrodes

Nikmanesh¹,

Doroodmand²,

Sheikhi³

2013

mater focus

View full text Add to dashboard Cite

Selective methane (CH 4 ) sensors were fabricated based on interdigitated electrodes individually modified with core-shells of tungsten carbides-tin oxide (WC/W 2 C@SnO 2 ) and tungsten-tin oxide (W@SnO 2 ) by thermoreduction method using different percentages of carbon nanotubes and tungsten powder. The morphology of the synthesized core-shells was evaluated by different methods such as patterned X-ray diffraction, particle size analyzer, scanning electron microscopyand transmission electron microscopy. In the fabricated CH 4 sensors, change in resistance was considered as the detection system. Figures of merit such as linearity, specificity, and response time were also evaluated. No serious interference was evaluated via introduction of at least 500 folds excess of different foreign gases to a certain concentration (∼ 1000parts per million, ppm) of CH 4 . Limit of detection was also evaluated to ∼ 45.0 ppm. The relative standard deviation during at least 10 replicate analyses of 1000 ppm of CH 4 standard solution was evaluated to 4.31%. Fast response time (∼ 8.0 s) and recovery time (∼ 11.0 s) have been obtained for the CH 4 sensor fabricated using 5.0%W@SnO 2 .

show abstract