Synthesis of highly selective and sensitive Cu-doped ZnO thin film sensor for detection of H 2 S gas

Nimbalkar, Amol R.; Patil, M.G.

doi:10.1016/j.mssp.2017.08.022

Cited by 60 publications

(36 citation statements)

References 40 publications

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“…ZnO is of low cost, and Al-doped ZnO is of excellent conductivity as well as cheap, which is considered a superior substitute for the expensive indium tin oxide (ITO) transparent conductive material [14][15][16]. In addition, ZnO is found to be very sensitive to ultraviolet (UV) light, humidity, and gas and has been successfully applied in UV sensors [17], graphic imaging sensors [18], humidity sensors, and gas sensors [19,20]. Last but not least, it has been demonstrated that ZnO with bionic structure level holes is suitable for energy storage and utilization [21].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of ZnO Thin Films Grown on Quartz Glass and Sapphire (001) Substrates by Means of Magnetron Sputtering and High-Temperature Annealing

et al. 2019

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In this work, we reported a comparative study of ZnO thin films grown on quartz glass and sapphire (001) substrates through magnetron sputtering and high-temperature annealing. Firstly, the ZnO thin films were deposited on the quartz glass and sapphire (001) substrates in the same conditions by magnetron sputtering. Afterwards, the sputtered ZnO thin films underwent an annealing process at 600 °C for 1 h in an air atmosphere to improve the quality of the films. X-ray diffraction, scanning electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy (XPS), ultraviolet-visible spectra, photoluminescence spectra, and Raman spectra were used to investigate the structural, morphological, electrical, and optical properties of the both as-received ZnO thin films. The ZnO thin films grown on the quartz glass substrates possess a full width of half maximum value of 0.271° for the (002) plane, a surface root mean square value of 0.50 nm and O vacancies/defects of 4.40% in the total XPS O 1s peak. The comparative investigation reveals that the whole properties of the ZnO thin films grown on the quartz glass substrates are comparable to those grown on the sapphire (001) substrates. Consequently, ZnO thin films with high quality grown on the quartz glass substrates can be achieved by means of magnetron sputtering and high-temperature annealing at 600 °C.

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Section: Introductionmentioning

confidence: 99%

Comparative Study of ZnO Thin Films Grown on Quartz Glass and Sapphire (001) Substrates by Means of Magnetron Sputtering and High-Temperature Annealing

et al. 2019

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“…In our synthesis, PL spectrum exhibits a strong and sharp UV and blue emissions which confirms that the grown ZnSnO 3 has good optical properties with few structural defects. These results demonstrated the potential application of ZnSnO 3 film in realizing UV excitation gas sensors …”

Section: Resultsmentioning

confidence: 60%

“…The rate at which man has made progress in terms of technology and industrialization is in direct proportion with the increase of air pollution. In fact, industrial pollution releases hazardous gases into the air such as Ammonia (NH 3 ),, Carbon monoxide (CO), Hydrogen Sulfide (H 2 S), and Nitrogen dioxide (NO 2 ) . NO 2 gas is one of the most exhaustively studies gases .…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of Sensitive Room Temperature NO₂ Gas Sensor Based on ZnSnO₃ Thin Film

Dabbabi

Nasr

Madouri

et al. 2019

Physica Status Solidi (a)

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In this work, the simple and low cost fabrication of a new sensitive gas sensor ZnSnO 3 thin film is demonstrated by mixing doped oxide solutions based on tin doped zinc oxide (ZnO:Sn) and fluorine doped tin oxide (SnO 2 : F). The structural, morphological, and optical properties are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and spectrophotometry, respectively. Structural and morphological analysis confirmed the deposition of ZnSnO 3 film with porous surface using mixed doped oxide solutions. Optical studies reveal that ZnSnO 3 film exhibits a high transmittance (85%) and a wide band gap energy (3.5 eV), larger than that of ZnO:Sn film. Moreover, the several benefits of ZnSnO 3 film are confirmed by offering high sensitivity to NO 2 at room temperature.

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“…The Cu 2p 3/2 and Cu 2p 1/2 can be only observed with the photodetectors with Cu NSs as shown in Figure S9 (Supporting Information), verifying the crystallization of Cu atoms during annealing. As listed in Table 4 , the ratio of the Cu peak ( I Cu ) and CuO peak ( I CuO ) decreased from 3.1 to 1.2 with the increasing temperatures, indicating the gradually strengthened substitution of Cu atoms for Zn sites in ZnO lattice …”

Section: Resultsmentioning

confidence: 97%

Ultrahigh Responsivity UV Photodetector Based on Cu Nanostructure/ZnO QD Hybrid Architectures

et al. 2019

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Strong near‐surface electromagnetic field formed by collective oscillation of electrons on Cu nanostructure a shows a strong dependence on geometry, offering a promising approach to boost the light absorption of ZnO photoactive layers with enhanced plasmon scattering. Here, a facile way to fabricate UV photodetectors with tunable configuration of the self‐assembled Cu nanostructures on ZnO thin films is reported. The incident lights are effectively confined in ZnO photoactive layers with the existence of the uplayer Cu nanostructures, and the interdiffusion of Cu atoms during fabrication of the Cu nanostructures can improve the carrier transfer in ZnO thin films. The optical properties of the hybrid architectures are successfully tailored over a control of the geometric evolution of the Cu nanostructures, resulting in significantly enhanced photocurrent and responsivity of 2.26 mA and 234 A W−1 under a UV light illumination of 0.62 mW cm−2 at 10 V, respectively. The photodetectors also exhibit excellent reproducibility, stability, and UV–visible rejection ratio (R370 nm/R500 nm) of ≈370, offering an approach of high‐performance UV photodetectors for practical applications.

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Synthesis of highly selective and sensitive Cu-doped ZnO thin film sensor for detection of H 2 S gas

Cited by 60 publications

References 40 publications

Comparative Study of ZnO Thin Films Grown on Quartz Glass and Sapphire (001) Substrates by Means of Magnetron Sputtering and High-Temperature Annealing

Comparative Study of ZnO Thin Films Grown on Quartz Glass and Sapphire (001) Substrates by Means of Magnetron Sputtering and High-Temperature Annealing

Fabrication and Characterization of Sensitive Room Temperature NO₂ Gas Sensor Based on ZnSnO₃ Thin Film

Ultrahigh Responsivity UV Photodetector Based on Cu Nanostructure/ZnO QD Hybrid Architectures

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Synthesis of highly selective and sensitive Cu-doped ZnO thin film sensor for detection of H 2 S gas

Cited by 60 publications

References 40 publications

Comparative Study of ZnO Thin Films Grown on Quartz Glass and Sapphire (001) Substrates by Means of Magnetron Sputtering and High-Temperature Annealing

Comparative Study of ZnO Thin Films Grown on Quartz Glass and Sapphire (001) Substrates by Means of Magnetron Sputtering and High-Temperature Annealing

Fabrication and Characterization of Sensitive Room Temperature NO2 Gas Sensor Based on ZnSnO3 Thin Film

Ultrahigh Responsivity UV Photodetector Based on Cu Nanostructure/ZnO QD Hybrid Architectures

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Fabrication and Characterization of Sensitive Room Temperature NO₂ Gas Sensor Based on ZnSnO₃ Thin Film