Enhanced H2 sensing performance presented by Mg doped ZnO films fabricated with a novel ITO seed layer

Vijayalakshmi, K.; Renitta, A.

doi:10.1007/s10854-015-2855-0

Cited by 19 publications

(5 citation statements)

References 21 publications

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“…Among them, the ultrasonic atomizing system has been proven to be precise, controllable and repeatable. 29 Zn 1Àx Mg x O films deposited by spray pyrolysis have been reported frequently, 15,[30][31][32][33][34][35][36][37][38][39][40][41] but in the majority of the reports toxic or flammable solvents, such as methanol [30][31][32] or ethanol, 15,34,35 are used. Studies on water-based solutions are rare.…”

Section: Introductionmentioning

confidence: 99%

Influence of the aqueous solution composition on the morphology of Zn_1−xMg_xO films deposited by spray pyrolysis

et al. 2019

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Section: Introductionmentioning

confidence: 99%

Influence of the aqueous solution composition on the morphology of Zn_1−xMg_xO films deposited by spray pyrolysis

et al. 2019

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“…Figure a shows a comparison of the sensing performances of H 2 gas sensors operating at RT with different H 2 gas concentrations. The H 2 gas sensors proposed in this study exhibited outstanding sensing performance with a response of 70% at 50 ppm H 2 gas, compared with that of gas sensors based on ZnO nanostructures in the literature. ,− The dynamic responses of the proposed H 2 gas sensors against various H 2 concentrations ranging from 10 to 70 ppm measured at RT with an exposure time of 3 min are demonstrated in Figure b. Excellent sensing performances in real time with significant and rapid changes in the electrical resistance were observed in the proposed H 2 gas sensors based on Pd–ZnO NFs.…”

Section: Resultsmentioning

confidence: 70%

Functionalization of Zinc Oxide Nanoflowers with Palladium Nanoparticles via Microwave Absorption for Room Temperature-Operating Hydrogen Gas Sensors in the ppb Level

Jeon

Park

2021

ACS Appl. Mater. Interfaces

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Microwave-assisted functionalization of zinc oxide nanoflowers (ZnO NFs) with palladium nanoparticles (Pd NPs) is demonstrated to realize high-performance chemiresistive-type hydrogen (H 2 ) gas sensors operating at room temperature (RT). The developed gas sensors exhibit a high response of up to 70% at 50 ppm and a theoretical detection limit of 10 ppb. The formation of ZnO NFs with an enhanced specific surface area and their functionalization with Pd NPs are investigated through various characterizations. Furthermore, the optimization of microwave absorption upon the structural incorporations between nanostructures (NF−NPs) is investigated for solution-based functionalization at low temperatures (below 120 °C) for short process times (within 1 min), compared to the conventional thermal annealing at 250 °C for 1 h. Highly sensitive and selective ZnO-based gas sensors enabling the detection of H 2 gas molecules at 300 ppb concentration at RT exhibit a short response/recovery time of below 3 min and a good selectivity toward different gases including nitric oxide, carbon monoxide, and oxygen. The successful functionalization of nanostructured metal oxide semiconductors (MOSs) with metal NPs via effective and practical microwave absorption enhances the potential on highly sensitive and selective chemiresistive-type MOS-based gas sensors operating at RT without additional heaters or photogenerators.

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“…The observed increase of the bandgap energy is a result of the ZnO SL presence, which also induces changes in the morphology from flower-like (~6 μm diameter) for samples without SL to horizontal nanorods (~0.8 μm length) in the presence of the SL [ 123 ]. This method was also used to obtain undoped and Mg-doped ZnO films on indium tin oxide (ITO) SL [ 124 ]. The choice of a different material for the SL had, as a result, the selective nucleation and further growth of ZnO grains which exhibited a good H 2 sensing response, even more, improved by doping ZnO with Mg.…”

Section: Preparation Methods Of Zno Filmsmentioning

confidence: 99%

Various Applications of ZnO Thin Films Obtained by Chemical Routes in the Last Decade

et al. 2023

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This review addresses the importance of Zn for obtaining multifunctional materials with interesting properties by following certain preparation strategies: choosing the appropriate synthesis route, doping and co-doping of ZnO films to achieve conductive oxide materials with p- or n-type conductivity, and finally adding polymers in the oxide systems for piezoelectricity enhancement. We mainly followed the results of studies of the last ten years through chemical routes, especially by sol-gel and hydrothermal synthesis. Zinc is an essential element that has a special importance for developing multifunctional materials with various applications. ZnO can be used for the deposition of thin films or for obtaining mixed layers by combining ZnO with other oxides (ZnO-SnO2, ZnO-CuO). Also, composite films can be achieved by mixing ZnO with polymers. It can be doped with metals (Li, Na, Mg, Al) or non-metals (B, N, P). Zn is easily incorporated in a matrix and therefore it can be used as a dopant for other oxidic materials, such as: ITO, CuO, BiFeO3, and NiO. ZnO can be very useful as a seed layer, for good adherence of the main layer to the substrate, generating nucleation sites for nanowires growth. Thanks to its interesting properties, ZnO is a material with multiple applications in various fields: sensing technology, piezoelectric devices, transparent conductive oxides, solar cells, and photoluminescence applications. Its versatility is the main message of this review.

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Enhanced H2 sensing performance presented by Mg doped ZnO films fabricated with a novel ITO seed layer

Cited by 19 publications

References 21 publications

Influence of the aqueous solution composition on the morphology of Zn_1−xMg_xO films deposited by spray pyrolysis

Influence of the aqueous solution composition on the morphology of Zn_1−xMg_xO films deposited by spray pyrolysis

Functionalization of Zinc Oxide Nanoflowers with Palladium Nanoparticles via Microwave Absorption for Room Temperature-Operating Hydrogen Gas Sensors in the ppb Level

Various Applications of ZnO Thin Films Obtained by Chemical Routes in the Last Decade

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Enhanced H2 sensing performance presented by Mg doped ZnO films fabricated with a novel ITO seed layer

Cited by 19 publications

References 21 publications

Influence of the aqueous solution composition on the morphology of Zn1−xMgxO films deposited by spray pyrolysis

Influence of the aqueous solution composition on the morphology of Zn1−xMgxO films deposited by spray pyrolysis

Functionalization of Zinc Oxide Nanoflowers with Palladium Nanoparticles via Microwave Absorption for Room Temperature-Operating Hydrogen Gas Sensors in the ppb Level

Various Applications of ZnO Thin Films Obtained by Chemical Routes in the Last Decade

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Influence of the aqueous solution composition on the morphology of Zn_1−xMg_xO films deposited by spray pyrolysis

Influence of the aqueous solution composition on the morphology of Zn_1−xMg_xO films deposited by spray pyrolysis