Electronic sensitization of CuO thin films by Cr-doping for enhanced gas sensor response at low detection limit

Szkudlarek, Aleksandra; Kollbek, Kamila; Klejna, Sylwia; Rydosz, Artur

doi:10.1088/2053-1591/aae0d8

Cited by 36 publications

(21 citation statements)

References 54 publications

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“…The response change of 33% under 16 ppm was observed with very high response/recovery times: 160/360 s [40]. Recently, the acetone-sensing behavior of the Cr-doped CuO acetone sensor was published in [59]. The highest response was obtained at 450 • C (3.2 ppm of acetone) with the limit of detection at~0.4 ppm [59].…”

Section: Acetone (C 3 H 6 O)mentioning

confidence: 97%

“…Recently, the acetone-sensing behavior of the Cr-doped CuO acetone sensor was published in [59]. The highest response was obtained at 450 °C (3.2 ppm of acetone) with the limit of detection at ~0.4 ppm [59]. The sensor was designed to cover the "diabetes" and "health" region, which means that it is able to detect the acetone concentrations in the range of 0.4-10 ppm.…”

Section: Acetone (C3h6o)mentioning

confidence: 99%

“…Table 2 shows a summary of the information presented in this review. The author of this review started his own research program to utilize CuO in the exhaled acetone measurements, as a supplementary tool for non-invasive diabetes monitoring [59,92].…”

Section: Conclusion and Further Perspectivesmentioning

confidence: 99%

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The Use of Copper Oxide Thin Films in Gas-Sensing Applications

Rydosz

2018

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115

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In this work, the latest achievements in the field of copper oxide thin film gas sensors are presented and discussed. Several methods and deposition techniques are shown with their advantages and disadvantages for commercial applications. Recently, CuO thin film gas sensors have been studied to detect various compounds, such as: nitrogen oxides, carbon oxides, hydrogen sulfide, ammonia, as well as several volatile organic compounds in many different applications, e.g., agriculture. The CuO thin film gas sensors exhibited high 3-S parameters (sensitivity, selectivity, and stability). Furthermore, the possibility to function at room temperature with long-term stability was proven as well, which makes this material very attractive in gas-sensing applications, including exhaled breath analysis.

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Section: Acetone (C 3 H 6 O)mentioning

confidence: 97%

Section: Acetone (C3h6o)mentioning

confidence: 99%

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The Use of Copper Oxide Thin Films in Gas-Sensing Applications

Rydosz

2018

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115

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“…The detection at higher concentrations is covered by commercially available sensors, e.g., TGS Figaro [7], but detectors able to detect acetone in the sub-ppm range are still under investigation. In the last few years, a number of papers have focused on enhanced acetone detection, utilizing various methods, such as optical detection [8,9,10], electrochemical sensors [11,12,13], metal oxides (MOXs)-based sensors [14,15,16,17,18,19,20], and analytical systems [21,22,23,24,25]. Microwave-based gas sensors with various gas-sensitive layers, including organic layers [26,27] and various MOXs layers [28,29,30], were investigated by the authors as well.…”

Section: Introductionmentioning

confidence: 99%

Tin Dioxide Thin Film with UV-enhanced Acetone Detection in Microwave Frequency Range

et al. 2019

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In this paper, the UV illumination effect for microwave gas sensors based on the tin dioxide was verified. A UV LED with emission wavelength close to the absorption edge of the SnO2 gas-sensing layer was selected as the UV source. The developed gas sensors were tested under exposure to acetone in the 0–200 ppm range at room temperature. The sensor’s complex reflection coefficient corresponding to target gas concentration was measured with the use of a five-port reflectometer system exhibiting enhanced uncertainty distribution, which allows for the detection of low gas concentration. The UV illumination significantly emphasizes the sensors’ response in terms of both magnitude and phase for low gas concentrations, in contrast to previously reported results, in which only the reflection coefficient’s phase was affected. The highest responses were obtained for modulated UV illumination.

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“…Most investigations have focused on detecting oxygen (O2) [9,10], ozone (O3) [11], carbon monoxide (CO) [12,13], carbon dioxide (CO2) [14], ammonia (N3) [15], sulfur dioxide (SO2) [15] and hydrogen (H2) [16,17]. Other organic gases such as ethanol [18], benzene [19], isopropanol [20], acetone [21,22] and methanol [23] have also called attention to be detected. Different biological electroactive species and other biomolecules as glucose [24,25], neurotransmitters [26], ascorbic acid [27,28], uric acid [29], hydrogen peroxide (H2O2) [30] among others are also of great interest to be monitored due to the need of diagnosis of diseases [31].…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanostructures as a Multi-Functional Platform for Sensing Applications

et al. 2018

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The various forms of carbon nanostructures are providing extraordinary new opportunities that can revolutionize the way gas sensors, electrochemical sensors and biosensors are engineered. The great potential of carbon nanostructures as a sensing platform is exciting due to their unique electrical and chemical properties, highly scalable, biocompatible and particularly interesting due to the almost infinite possibility of functionalization with a wide variety of inorganic nanostructured materials and biomolecules. This opens a whole new pallet of specificity into sensors that can be extremely sensitive, durable and that can be incorporated into the ongoing new generation of wearable technology. Within this context, carbon-based nanostructures are amongst the most promising structures to be incorporated in a multi-functional platform for sensing. The present review discusses the various 1D, 2D and 3D carbon nanostructure forms incorporated into different sensor types as well as the novel functionalization approaches that allow such multi-functionality.

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Electronic sensitization of CuO thin films by Cr-doping for enhanced gas sensor response at low detection limit

Cited by 36 publications

References 54 publications

The Use of Copper Oxide Thin Films in Gas-Sensing Applications

The Use of Copper Oxide Thin Films in Gas-Sensing Applications

Tin Dioxide Thin Film with UV-enhanced Acetone Detection in Microwave Frequency Range

Carbon Nanostructures as a Multi-Functional Platform for Sensing Applications

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