Room temperature operated carbon dioxide sensor based on silver doped zinc oxide/cupric oxide nanoflowers

Keerthana, S.; Rathnakannan, K.

doi:10.1016/j.snb.2022.133181

Cited by 17 publications

(6 citation statements)

References 44 publications

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“…In another similar study, an Ag-doped ZnO–CuO heterojunction was utilized for room-temperature, sensitive CO 2 detection within the range of 150–1000 ppm. 178 The sensing mechanism, shown in Fig. 5A , was explained by the formation of a p–n heterojunction at the ZnO–CuO interface, which results in the movement of the electrons and holes (due to the difference in work functions of ZnO and CuO) and an increase in the number of free electrons near the surface.…”

Section: Nanosensors For Critical Gases In the Coal Minesmentioning

confidence: 99%

Gas nanosensors for health and safety applications in mining

Baharfar,

Lin,

Kilani

et al. 2023

Nanoscale Adv.

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Section: Nanosensors For Critical Gases In the Coal Minesmentioning

confidence: 99%

Gas nanosensors for health and safety applications in mining

Baharfar,

Lin,

Kilani

et al. 2023

Nanoscale Adv.

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“…There are a variety of different approaches for sensing CO 2 and CH 4 over the recent years. Some of these include semiconducting metal oxide based sensors, [ 6,7 ] optical and acoustics sensors, [ 8–10 ] and electrochemical‐based sensors. [ 11,12 ] Among the optical sensors, pyroelectric‐based nondispersive infrared (NDIR) sensors have proven promising, partly contributed by the advantages of pyroelectric detectors.…”

Section: Introductionmentioning

confidence: 99%

CMOS AlN and ScAlN Pyroelectric Detectors with Optical Enhancement for Detection of CO₂ and CH₄ Gases

Liang

et al. 2023

Adv Elect Materials

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Gassensors are useful for monitoring of greenhouse gases. As the move toward complementary metal-oxide-semiconductor (CMOS) compatible pyroelectric room temperature detectors is gaining traction due to its scalability to 8-in./12-in. wafer area and integrable with CMOS electronics, CMOS compatible aluminum nitride (AlN)-and scandium aluminum nitride (ScAlN)-based pyroelectric detectors are developed for sensing of CO 2 and CH 4 gases, which are two of the greenhouse gases that contribute significantly to global warming. Leveraging gas absorption at respective mid-infrared (IR) wavelengths, CO 2 and CH 4 gases are detected at various concentrations with fast response time ≈1 s. A compound parabolic collector (CPC) is designed and integrated into the gas sensor to enhance the optical flux received by the detector, which demonstrates ≈10× signal improvement in its presence. Further factors such as the effect of sensing area reduction and response to random gas concentrations are also tested on AlN-and ScAlN-based pyroelectric detectors respectively to observe the gas sensing behaviors of both detectors. The results obtained provide further understanding of the behavior of CMOS AlN-and ScAlN-based pyroelectric detectors as IR gas sensors, which can potentially inspire new design and design selection for various gas sensing applications.

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“…Even though CH 4 is not classified as a toxic gas, it is highly flammable and can cause explosion at high concentration ranging from 5% to 15% in the air [5][6][7][8]. On the other hand, CO is greatly poisonous [9,10], and CO 2 is one of the greenhouse gases that has a major impact on global warming [11][12][13]. Two-dimensional (2D) materials are suitable candidates for gas sensing due to their special properties [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Simulation of the Xenes nanoribbons for sensing CO, CO₂, and CH₄ gases

Alaee,

Sadeghzadeh,

Ostovari

2023

Phys. Scr.

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Xenes can be suitable candidates for sensing applications. So, their nanoribbon’s capabilities as carbon gas sensors have been investigated by employing tight-binding approximation coupling to Non-Equilibrium Green’s Function. The armchair type of graphene, silicene, and phosphorene nanoribbons (AGNR, ASiNR, and APNR) are selected from Xenes materials for sensing CO, CO2, and CH4 as carbon-based gases in different concentrations. Our study shows that AGNR-based sensors are sensitive to CO and CO2 gas molecules at low concentrations (below 0.15). ASiNR-based sensors have considerable sensitivity to all CO and CH4 gas molecule concentrations. However, APNR-based sensors can only detect CO2 gas molecules. While AGNR-based sensors show the best selectivity properties in the presence of three gases, and ASiNR-based sensors can select CO gas molecules from the rest. Although, APNR-based sensors show weak selectivity. Furthermore, due to their bond type, the APNR-based sensor has less recovery time than AGNR- and ASiNR-based gas sensors.

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Room temperature operated carbon dioxide sensor based on silver doped zinc oxide/cupric oxide nanoflowers

Cited by 17 publications

References 44 publications

Gas nanosensors for health and safety applications in mining

Gas nanosensors for health and safety applications in mining

CMOS AlN and ScAlN Pyroelectric Detectors with Optical Enhancement for Detection of CO₂ and CH₄ Gases

Simulation of the Xenes nanoribbons for sensing CO, CO₂, and CH₄ gases

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Room temperature operated carbon dioxide sensor based on silver doped zinc oxide/cupric oxide nanoflowers

Cited by 17 publications

References 44 publications

Gas nanosensors for health and safety applications in mining

Gas nanosensors for health and safety applications in mining

CMOS AlN and ScAlN Pyroelectric Detectors with Optical Enhancement for Detection of CO2 and CH4 Gases

Simulation of the Xenes nanoribbons for sensing CO, CO2, and CH4 gases

Contact Info

Product

Resources

About

CMOS AlN and ScAlN Pyroelectric Detectors with Optical Enhancement for Detection of CO₂ and CH₄ Gases

Simulation of the Xenes nanoribbons for sensing CO, CO₂, and CH₄ gases