Hydrogen gas sensing properties of Pt/Ta2O5 Schottky diodes based on Si and SiC substrates

Yu, Jie-Tai; Chen, G.; Li, C.X.; Shafiei, Mahnaz; Ou, Jian Zhen; Plessis, Johan du; Kalantar‐zadeh, Kourosh; Lai, P. T.; Włodarski, W.

doi:10.1016/j.sna.2011.02.021

Cited by 27 publications

(5 citation statements)

References 29 publications

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“…Similarly, Figure 5b shows the high‐resolution XPS spectra of Ta 4f wherein the de‐convoluted peaks represent the binding energies of 26.2 eV and 27.2 eV which correspond to Ta 4f7/2 and Ta 4f5/2 respectively. These values suggest that the Ta is in +5 oxidation state in the composite [59–62] . Further, the asymmetric O1s spectra of pure SnO 2 and 5 wt% TaSn nanocomposite material are given in Figure 5c and Figure 5d respectively.…”

Section: Resultsmentioning

confidence: 79%

“…These values suggest that the Ta is in + 5 oxidation state in the composite. [59][60][61][62] Further, the asymmetric O1s spectra of pure SnO 2 and 5 wt% TaSn nanocomposite material are given in Figure 5c and Figure 5d respectively. The O1s spectra of both the samples display the different types of oxygen species available in the material.…”

Section: Surface Composition Analysismentioning

confidence: 99%

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Enhanced Gas Sensing Performance of Nano‐Structured Ta₂O₅‐SnO₂ Composite for Low Concentration CO Detection

et al. 2022

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In the present work, the superior performance of nanostructured Ta 2 O 5 -SnO 2 nanocomposite homo-junction was demonstrated for the detection of CO gas at low concentration (5-10 ppm) and low operating temperature (50 °C). The gas sensing performance of this material is comparable to the state of the art materials reported to date in the literature. In addition, the material exhibits high selectivity to CO gas over other interfering gases such as CO 2 , H 2 , CH 4 , NO 2 , and SO 2 etc. The sensing performance of the composite was significantly higher than its individual oxides. The composite is robust and shows good reproducibility and chemical stability with low response and recovery time. The strategy employed herein to create homo-junction nanocomposites of semiconducting metal oxides significantly improved the sensitivity and selectivity to CO gas closer to room temperature and thus could pave the way for the development of efficient homo-junction nanocomposites for gas sensing applications.

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Section: Resultsmentioning

confidence: 79%

Section: Surface Composition Analysismentioning

confidence: 99%

Enhanced Gas Sensing Performance of Nano‐Structured Ta₂O₅‐SnO₂ Composite for Low Concentration CO Detection

et al. 2022

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“…A theoretical study showed an efficiency of 12% [31], though a much low practical efficiency of E FF =1.8% was obtained due to imperfection of the materials and the M/S interface. Schottky barrier type diodes were also fabricated on some other MO semiconductors such as Ta 2 O 5 and ZnO using Pt as the metal electrode though no PV effect was investigated [32,33].…”

Section: Momentioning

confidence: 99%

Numerical study of metal oxide Schottky type solar cells

Zhu

Shao

Luo

2012

Solid State Sciences

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“…Among them, Ta 2 O 5 is one of the favorable materials for DUV detectors owing to its wide bandgap of 4.6 eV, excellent dielectric properties, and non-corrosive nature making it suitable for coating. [18][19][20] These properties make Ta 2 O 5 a promising material for various applications, including optical coatings, [21] dielectric layers in electronic devices, [22] and gas sensors, [23] humidity sensors, [24] bio sensors, [25,26] and specially photocatalysis. [27] However, DUV sensors utilizing Ta 2 O 5 as the sensing material have not been extensively studied due to challenges in depositing the material, low carrier concentration resulting in reduced sensitivity, difficulties in measurement, and low photocurrent response.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of High‐Quality Ta₂O₅ Nanoparticles for Highly Selective SAW‐Based DUV Sensor and Corona Detection Application

Kim,

Nawaz,

Choi

et al. 2023

Adv Materials Technologies

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In recent times, significant progress is made in the development of solar‐blind deep‐ultraviolet (DUV) photodetectors (200–280 nm) due to their potential applications for military and civil purposes. In this study, the development of a novel solar‐blind DUV photodetector based on tantalum pentoxide (Ta2O5) nanoparticles (NPs) utilizing Surface Acoustic Wave (SAW) sensor integrated with Interface electronics is reported for the first time. The 3‐D Ta2O5 NPs surface morphology, crystallinity, and defect state level is discussed using various analytical techniques, including scanning electron microscope (SEM), X‐ray diffraction (XRD), and spectrophotometer. The developed 3‐D Ta2O5 NPs based photodetector exhibits high sensitivity to 254 nm DUV irradiation (5 µW cm−2), demonstrating excellent photoresponse characteristics. The performance parameters including highest sensitivity, fast response/recovery time are measured as 1621.1 ppm (mW cm−2)−1, 3.7s/19.8s, respectively. Subsequent analysis demonstrates the stability and repeatability of the photodetector, enabling its potential to real time corona discharge detection. With its inherent advantages, the current DUV photodetector utilizing Ta2O5 NPs exhibits great potential for future applications in DUV optoelectronics.

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Hydrogen gas sensing properties of Pt/Ta2O5 Schottky diodes based on Si and SiC substrates

Cited by 27 publications

References 29 publications

Enhanced Gas Sensing Performance of Nano‐Structured Ta₂O₅‐SnO₂ Composite for Low Concentration CO Detection

Enhanced Gas Sensing Performance of Nano‐Structured Ta₂O₅‐SnO₂ Composite for Low Concentration CO Detection

Numerical study of metal oxide Schottky type solar cells

Synthesis and Characterization of High‐Quality Ta₂O₅ Nanoparticles for Highly Selective SAW‐Based DUV Sensor and Corona Detection Application

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Hydrogen gas sensing properties of Pt/Ta2O5 Schottky diodes based on Si and SiC substrates

Cited by 27 publications

References 29 publications

Enhanced Gas Sensing Performance of Nano‐Structured Ta2O5‐SnO2 Composite for Low Concentration CO Detection

Enhanced Gas Sensing Performance of Nano‐Structured Ta2O5‐SnO2 Composite for Low Concentration CO Detection

Numerical study of metal oxide Schottky type solar cells

Synthesis and Characterization of High‐Quality Ta2O5 Nanoparticles for Highly Selective SAW‐Based DUV Sensor and Corona Detection Application

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Product

Resources

About

Enhanced Gas Sensing Performance of Nano‐Structured Ta₂O₅‐SnO₂ Composite for Low Concentration CO Detection

Enhanced Gas Sensing Performance of Nano‐Structured Ta₂O₅‐SnO₂ Composite for Low Concentration CO Detection

Synthesis and Characterization of High‐Quality Ta₂O₅ Nanoparticles for Highly Selective SAW‐Based DUV Sensor and Corona Detection Application