Optical fiber hydrogen sensor based on an annealing-stimulated Pd–Y thin film

Song, Han; Chen, Youping; Zhang, Gang; Liu, Yi; Huang, Pengcheng; Zhao, Huawei; Yang, Minghong; Dai, Jixiang; Li, Zhi

doi:10.1016/j.snb.2015.03.090

Cited by 33 publications

(25 citation statements)

References 24 publications

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“…However, pure palladium film is easy to bubble and crack after absorbing and desorbing hydrogen for several times [6], reducing the stability and reliability of the sensor. Mechanical stress in the film and lattice expansion of palladium structure are the significant issues for further research to address [7].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Pd-Y alloy thin film has been used to detect hydrogen gas based on both optical and electrical methods [6][7][8][9]15]. The electrical detection method is inexpensive, easy and convenient compared to the optical counterpart [6][7][8][9]. Furthermore, palladium-yttrium based gas sensor does not require high operating temperature, which is compulsory in other popular resistive gas sensors based on tungsten oxide [16,17] Jamshidi et al [15] reported the hydrogen detection based on the resistance change of palladium-yttrium thin film.…”

Section: Introductionmentioning

confidence: 99%

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Hydrogen sensor based on palladium-yttrium alloy nanosheet

Wang

Zhu

Chen

et al. 2017

Materials Chemistry and Physics

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This paper presents a hydrogen sensor based on palladium-yttrium (Pd-Y) alloy nanosheet. Zigzag-shaped Pd-Y nanosheet with a thickness of 19.3 nm was deposited on a quartz substrate by using an ultrahigh-vacuum magnetron sputtering system and shadow mask. The ratio of palladium to yttrium in the nanosheet was 0.92/0.08. The fabrication process was simple and low-cost, and the sensor can be mass-produced. The experimental results show the sensor has a superior sensitivity, reversibility, and reproducibility. The resistive-based hydrogen detection mechanism in this research is much simpler and more compact compared to the optical-based detection method. Highlights  Pd-Y sensing element was fabricated using a magnetron sputtering system and shadow mask.  The Pd-Y compound consisted of 92% Pd and 8% Y.  The fabrication process was simple, low-cost, and mass-production compatible.  The sensor showed superior sensitivity, reversibility, and reproducibility to hydrogen gas.  The device is more compact than the optical-based counterpart.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hydrogen sensor based on palladium-yttrium alloy nanosheet

Wang

Zhu

Chen

et al. 2017

Materials Chemistry and Physics

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“…The prepared graphene film then went through high temperature annealing and rolling depression (Figure S1, Supporting Information). The formed LG film was then coated with a very thin layer of Cu via magnetron sputtering to obtain Cu/LG film . The detailed synthesis routes that are widely and commonly used in both academic research and industry manufacture, can be found in the Experimental Section.…”

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confidence: 99%

Ultrahigh Conductive Copper/Large Flake Size Graphene Heterostructure Thin‐Film with Remarkable Electromagnetic Interference Shielding Effectiveness

Wang

Mao

Wang³

et al. 2018

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To guarantee the normal operation of next generation portable electronics and wearable devices, together with avoiding electromagnetic wave pollution, it is urgent to find a material possessing flexibility, ultrahigh conductive, and superb electromagnetic interference shielding effectiveness (EMI SE) simultaneously. In this work, inspired by a building bricks toy with the interlock system, we design and fabricate a copper/large flake size graphene (Cu/LG) composite thin film (≈8.8 μm) in the light of high temperature annealing of a large flake size graphene oxide film followed by magnetron sputtering of copper. The obtained Cu/LG thin-film shows ultrahigh thermal conductivity of over 1932.73 (±63.07) W m K and excellent electrical conductivity of 5.88 (±0.29) × 10 S m . Significantly, it also exhibits a remarkably high EMI SE of over 52 dB at the frequency of 1-18 GHz. The largest EMI SE value of 63.29 dB, accorded at 1 GHz, is enough to obstruct and absorb 99.99995% of incident radiation. To the best of knowledge, this is the highest EMI SE performance reported so far in such thin thickness of graphene-based materials. These outstanding properties make Cu/LG film a promising alternative building block for power electronics, microprocessors, and flexible electronics.

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“…Song et al . proposed a kind of annealing-stimulated method to retard the aging behavior of thin film and to improve the response speed14. Kay et al .…”

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confidence: 99%

Modeling of hydrogen atom diffusion and response behavior of hydrogen sensors in Pd–Y alloy nanofilm

Liu

Huang

et al. 2016

Sci Rep

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To detect hydrogen gas leakage rapidly, many types of hydrogen sensors containing palladium alloy film have been proposed and fabricated to date. However, the mechanisms and factors that determine the response rate of such hydrogen sensor have not been established theoretically. The manners in which response time is forecasted and sensitive film is designed are key issues in developing hydrogen sensors with nanometer film. In this paper, a unilateral diffusion model of hydrogen atoms in Pd alloy based on Fick’s second law is proposed to describe the Pd–H reaction process. Model simulation shows that the hydrogen sensor response time with Pd alloy film is dominated by two factors (film thickness and hydrogen diffusion coefficient). Finally, a series of response rate experiments with varying thicknesses of Pd–Y (yttrium) alloy film are implemented to verify model validity. Our proposed model can help researchers in the precise optimization of film thickness to realize a simultaneously speedy and sensitive hydrogen sensor. This study also aids in evaluating the influence of manufacturing errors on performances and comparing the performances of sensors with different thicknesses.

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Optical fiber hydrogen sensor based on an annealing-stimulated Pd–Y thin film

Cited by 33 publications

References 24 publications

Hydrogen sensor based on palladium-yttrium alloy nanosheet

Hydrogen sensor based on palladium-yttrium alloy nanosheet

Ultrahigh Conductive Copper/Large Flake Size Graphene Heterostructure Thin‐Film with Remarkable Electromagnetic Interference Shielding Effectiveness

Modeling of hydrogen atom diffusion and response behavior of hydrogen sensors in Pd–Y alloy nanofilm

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