Study of a WO3 thin film based hydrogen gas sensor decorated with platinum nanoparticles

Chang, Ching Hong; Chou, Tzu Chieh; Chen, Wei Cheng; Niu, Jing-Shiuan; Lin, Kun-Wei; Cheng, Shiou–Ying; Tsai, Jung Hui; Liu, Wen Chau

doi:10.1016/j.snb.2020.128145

Cited by 63 publications

(19 citation statements)

References 43 publications

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“…From this perspective, diverse catalytic NP/SMO-based nanostructures have been reported as highly sensitive and selective H 2 sensing layers. [134][135][136]149,162,164 SMO-Based Composites. In addition to functionalization of catalytic NPs on SMOs, composites of (1) multicomponent SMOs, 23,165 (2) SMO and graphene/graphene derivatives, 166−169 and (3) SMOs and gas selective membranes 170 can improve H 2 sensing properties due to their synergistic effects.…”

Section: Metal Oxide-based Materialsmentioning

confidence: 99%

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Chemiresistive Hydrogen Sensors: Fundamentals, Recent Advances, and Challenges

et al. 2020

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Hydrogen (H 2 ) is one of the next-generation energy sources because it is abundant in nature and has a high combustion efficiency that produces environmentally benign products (H 2 O). However, H 2 /air mixtures are explosive at H 2 concentrations above 4%, thus any leakage of H 2 must be rapidly and reliably detected at much lower concentrations to ensure safety. Among the various types of H 2 sensors, chemiresistive sensors are one of the most promising sensing systems due to their simplicity and low cost. This review highlights the advances in H 2 chemiresistors, including metal-, semiconducting metal oxide-, carbon-based materials, and other materials. The underlying sensing mechanisms for different types of materials are discussed, and the correlation of sensing performances with nanostructures, surface chemistry, and electronic properties is presented. In addition, the discussion of each material emphasizes key advances and strategies to develop superior H 2 sensors. Furthermore, recent key advances in other types of H 2 sensors are briefly discussed. Finally, the review concludes with a brief outlook, perspective, and future directions.

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Section: Metal Oxide-based Materialsmentioning

confidence: 99%

“…In addition, Pd NPs on urchin-like W 18 O 49 nanospheres allow to exhibit high response and selectivity to H 2 at low temperatures. From this perspective, diverse catalytic NP/SMO-based nanostructures have been reported as highly sensitive and selective H 2 sensing layers. − ,,, …”

Section: Metal Oxide-based Materialsmentioning

confidence: 99%

Chemiresistive Hydrogen Sensors: Fundamentals, Recent Advances, and Challenges

et al. 2020

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“…The existing sensors in literature though attain very high sensitivities using nanoparticles and patterned gate to increase the sensing area, has poor detection limits [31][32][33][34][35][36][37][38][39]. This limitation arises since the underlying device design and the heart of operation of the sensor (2DEG in case of HEMT) is given little focus compared to the interest laid in improving the sensing area.…”

Section: Comparison With Existing Sensorsmentioning

confidence: 99%

Modeling and Simulation of Ultrahigh Sensitive AlGaN/AlN/GaN HEMT-Based Hydrogen Gas Detector With Low Detection Limit

2021

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Presented through this work is a steady state analytical model of the GaN HEMT based gas detector. GaN with high chemical and thermal stability provides promises for detectors in hazardous environments. However, HEMT sensor resolution must be improved to develop high precision gas sensors for automotive and space applications. The proposed model aids in systematical study of the sensor performance and prediction of sensitivities. The linear relation of threshold voltage shift at thermal equilibrium is used in predicting the sensor response. Numerical model for the reaction rates and the electrical dipole at the adsorption sites at the surface and metal/semiconductor interface have been developed and the sensor performance is analyzed for various gas concentrations. The validation of the model has been achieved through surface and interfacial charge adsorption-based gate electrode work function, Schottky barrier, 2DEG and threshold voltage deduction using MATLAB and SILVACO ATLAS TCAD. Further the applicability of gd (channel conductance) as gas sensing metric is also presented. With high ID and gd percentile sensitivities of 118.5% and 92 % for 10 ppm hydrogen concentration. The sensor shows capability for detection in sub-ppm levels by exhibiting a response of 0.043% for 0.01ppm (10 ppb) hydrogen concentration. The detection limit of the sensor (1% sensitivity) presented here is 169 ppb and the device current increases by 34.2 μA for 1ppb hydrogen concentration.

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“…In particular, tungsten trioxide has been extensively used in sensors for the detection of hazardous gases, such as hydrogen, ammonia, nitrous oxide, and hydrogen sulfide (Wang et al, 2000;Rydosz et al, 2014;Castillo et al, 2020;Dong et al, 2020). However, most of the WO 3 -based gas sensors function at high temperatures or have high response/recovery times, which hinder their practical application (Esfandiar et al, 2014;Chang et al, 2020). Therefore, the development of tungsten oxide-based gas sensor materials that can circumvent these limitations is important.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient MoS2/CsxWO3 Nanocomposite Hydrogen Gas Sensors

Shrisha

Motora

et al. 2022

Front. Mater.

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Hydrogen gas sensors are important because of the significant use of hydrogen in industrial and commercial applications. In this study, we synthesized a novel CsxWO3/MoS2 nanocomposite using a solvothermal method. The samples were spin-coated on Si/SiO2 substrates, and the sensors were fabricated with interdigital electrodes. The hydrogen gas sensing properties of the sensor were investigated. CsxWO3/MoS2 exhibited an outstanding hydrogen gas sensing ability at room temperature. In particular, the nanocomposite comprising 15 wt.% MoS2 (15% CsxWO3/MoS2) showed a 51% response to hydrogen gas at room temperature. Further, it exhibited an excellent cyclic stability for hydrogen gas sensing, which is crucial for practical applications. Therefore, this study facilitates the development of effective and efficient hydrogen gas sensors operable at room temperature.

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Study of a WO3 thin film based hydrogen gas sensor decorated with platinum nanoparticles

Cited by 63 publications

References 43 publications

Chemiresistive Hydrogen Sensors: Fundamentals, Recent Advances, and Challenges

Chemiresistive Hydrogen Sensors: Fundamentals, Recent Advances, and Challenges

Modeling and Simulation of Ultrahigh Sensitive AlGaN/AlN/GaN HEMT-Based Hydrogen Gas Detector With Low Detection Limit

Highly Efficient MoS2/CsxWO3 Nanocomposite Hydrogen Gas Sensors

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