Behavior of semiconductor gas sensors with sol-gel sensing layer

Halek, G.; Stoga, D.; Teterycz, Helena

doi:10.1109/stysw.2008.5164132

Cited by 1 publication

(2 citation statements)

References 7 publications

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“…When low quantities of HoMS-BaTiO3-sensitive materials are stacked on a membrane, the stacking layer remains thin, and gases can easily diffuse into the thin sensing layer. 26 Figure 3e shows the step response of 20 mg 2S-HoMS-BaTiO 3 upon exposure to NH 3 concentrations ranging from 10 ppm to 0.3 v/v%. The results indicate that the response is enhanced as the NH 3 concentration increases.…”

Section: Resultsmentioning

confidence: 99%

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Confinement Enrichment Effect in HoMS-BaTiO₃ Microwave Gas Sensors for the Detection of 10 ppb–0.55 v/v% Ammonia at Room Temperature

Xu,

Yang,

Wang

et al. 2024

ACS Sens.

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The construction of ammonia gas sensors with wide detection ranges is important for exhalation diagnosis and environmental pollution monitoring. To achieve a wide detection range, sensitive materials must possess excellent spatial confinement and large active surfaces to enhance gas adsorption. In this study, an ammonia microwave gas sensor with a wide detection range of 10 ppb−0.55 v/v% at room temperature was fabricated by incorporating hollow multishelled-structured BaTiO 3 (HoMS-BaTiO 3 ). The effect of the number of shells and the quantity of the sensitive material on the gas-sensing performance was investigated, and two-layered HoMS-BaTiO 3 demonstrated the best response at high concentrations (0.15−0.55 v/v%). Conversely, single-layered HoMS-BaTiO 3 displayed outstanding performance at low concentrations (10 ppb−0.15 v/v%). The lower the quantity of the sensitive material, the higher the response. This study offers a method for preparing room-temperature ammonia sensors with a wide detection range and reveals the link between the structure and quantity of sensitive materials and gas-sensing performance.

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Section: Resultsmentioning

confidence: 99%

“…Moreover, 4.7 mg 2S-HoMS-BaTiO 3 exhibited an 8.6-fold higher sensitivity than 33.0 mg 2S-HoMS-BaTiO 3 because of its high specific surface area. When low quantities of HoMS-BaTiO3-sensitive materials are stacked on a membrane, the stacking layer remains thin, and gases can easily diffuse into the thin sensing layer …”

Section: Resultsmentioning

confidence: 99%

Confinement Enrichment Effect in HoMS-BaTiO₃ Microwave Gas Sensors for the Detection of 10 ppb–0.55 v/v% Ammonia at Room Temperature

Xu,

Yang,

Wang

et al. 2024

ACS Sens.

View full text Add to dashboard Cite

show abstract

Behavior of semiconductor gas sensors with sol-gel sensing layer

Cited by 1 publication

References 7 publications

Confinement Enrichment Effect in HoMS-BaTiO₃ Microwave Gas Sensors for the Detection of 10 ppb–0.55 v/v% Ammonia at Room Temperature

Confinement Enrichment Effect in HoMS-BaTiO₃ Microwave Gas Sensors for the Detection of 10 ppb–0.55 v/v% Ammonia at Room Temperature

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Behavior of semiconductor gas sensors with sol-gel sensing layer

Cited by 1 publication

References 7 publications

Confinement Enrichment Effect in HoMS-BaTiO3 Microwave Gas Sensors for the Detection of 10 ppb–0.55 v/v% Ammonia at Room Temperature

Confinement Enrichment Effect in HoMS-BaTiO3 Microwave Gas Sensors for the Detection of 10 ppb–0.55 v/v% Ammonia at Room Temperature

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Confinement Enrichment Effect in HoMS-BaTiO₃ Microwave Gas Sensors for the Detection of 10 ppb–0.55 v/v% Ammonia at Room Temperature

Confinement Enrichment Effect in HoMS-BaTiO₃ Microwave Gas Sensors for the Detection of 10 ppb–0.55 v/v% Ammonia at Room Temperature