Fabrication and optical-electrical characteristics of ZnS/ZnO films by pulsed laser deposition

Wang, Caifeng

doi:10.1016/j.tsf.2023.139971

Cited by 5 publications

(2 citation statements)

References 32 publications

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“…6,7 In the literature, ZnS/ZnO compounds have been reported to be fabricated by different methods, such as: ZnS/ZnO heterostructures synthesized via a simple thermal evaporation method, 6,8 ZnS-ZnO nanocomposites through the hydrothermal route, 9 coaxial nanowires and hierarchical nanowires by chemical bath deposition and chemical etching processes, respectively, 10 and ZnS/ZnO lms via pulsed laser deposition. 11 In another study, 12 ZnS/ZnO:Mn layers were prepared by thermal suldation of ZnO:Mn lms deposited on a Si substrate with an RF magnetron sputtering technique. In addition, Deepa et al 13 have deposited zinc sulde thin lms by ultrasonic spray pyrolysis.…”

Section: Introductionmentioning

confidence: 99%

Highly responsive and selective ozone sensor based on Ga doped ZnS–ZnO composite sprayed films

Laribi,

Souissi,

Bernardini

et al. 2024

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Highly responsive and selective ozone sensor based on Ga doped ZnS–ZnO composite sprayed films

Laribi,

Souissi,

Bernardini

et al. 2024

RSC Adv.

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“…Zhang and co-workers [57] examined the effect of graphene film thickness on the photoluminescence properties of ZnO/graphene composite films. Wang and co-workers [58] investigated the optical-electrical characteristics of ZnS/ZnO films. Khoshsang and co-workers [59] carried out the biosynthesis of ZnO and CuO nanoparticles using sunflower petal extract.…”

Section: Introductionmentioning

confidence: 99%

Strong Interface Interaction of ZnO Nanosheets and MnSx Nanoparticles Triggered by Light over Wide Ranges of Wavelength to Enhance Their Removal of VOCs

Ma,

Zhang,

Gao

et al. 2023

Coatings

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The characteristics of the surface and interface of nanocomposites are important for exerting multi-functional properties and widening interdisciplinary applications. These properties are mainly depending on the electronic structures of materials. Some key factors, such as the surface, interface, grain boundaries, and defects take vital roles in the contribution of desired properties. Due to the excellent sensitivity of the QCM (quartz crystal microbalance) device, the surface and interface features of the nanocomposite were studied with the aid of the gas-response of the sensors (Sensor’s Gas-Sensitivity) in this work. To make full use of the visible light and part of NIR, a ZnO/MnSx nanocomposite was constructed using hydrothermal synthesis for narrowing the bandgap width of wide bandgap materials. The results indicated that the absorbance of the resulting nanocomposite was extended to part of the NIR range due to the introduction of impurity level or defect level, although ZnO and MnS belonged to wide bandgap semiconductor materials. To explore the physical mechanism of light activities, the photoconductive responses to weak visible light (650 nm, etc.) and NIR (near-infrared) (808 nm, 980 nm, and 1064 nm, etc.) were studied based on interdigital electrodes of Au on flexible PET (polyethylene terephthalate) film substrate with the casting method. The results showed that the on/off ratio of ZnO/MnSx nanocomposite to weak visible light and part of NIR light were changed by about one to five orders of magnitude, with changes varying with the amount of MnSx nanoparticle loading due to defect-assisted photoconductive behavior. It illustrated that the ZnO/MnSx nanocomposite easily produced photo-induced free charges, effectively avoiding the recombination of electrons/holes because of the formation of strong built-in electrical fields. To examine the surface and interface properties of nanocomposites, chemical prototype sensor arrays were constructed based on ZnO, ZnO/MnSx nanocomposite, and QCM arrays. The adsorption response behaviors of the sensor arrays to some typical volatile compounds were examined under a similar micro-environment. The results exhibited that in comparison to ZnO nanosheets, the ZnO nanosheets/MnSx nanocomposite increased adsorption properties to some typical organic volatile compounds significantly. It would have good potential applications in photo-catalysts, self-cleaning films, multi-functional coatings, and organic pollutants treatment (VOCs) of environmental fields for sustainable development. It provided some reference value to explore the physical mechanism of materials physics and photophysics for photo-active functional nanocomposites.

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Binary ZnS–ZnO films as an alternative buffer layer for solar cell applications

Gençyılmaz,

Akyüz,

Atay

2024

Appl. Phys. A

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In this research, binary ZnS–ZnO films were fabricated by a two-step process, offering an alternative buffer layer solution for photovoltaic solar cell applications. ZnS films were attained through thermal evaporation, after which they were annealed in air at separate temperatures resulting in films containing both ZnS and ZnO phases. Structural, electrical, ellipsometric, optical, and surface properties were examined in detail to elucidate their applicability as a buffer layer in photovoltaic applications. X-ray diffraction patterns revealed that the films exhibit cubic ZnS and hexagonal ZnO crystal structures, wherein crystallite size is augmented with higher annealing temperatures. ZnS films exhibited a needle-shaped surface morphology, as confirmed through atomic force microscopy (AFM) and field emission scanning electron microscopy (FESEM) images. Annealing caused noteworthy modifications on the surfaces of the films. Additionally, absorption spectra denote two distinct absorption regions forming as a result of the annealing process, possibly indicating the emergence of ZnS and ZnO phases. Photoluminescence analyses demonstrate that binary ZnS–ZnO films exhibit greater emission intensities than single-phase ZnS films. Additionally, the annealing process caused the electrical resistivity of films to reduce from 1.28 × 105 to 3.84 × 101 Ω cm. These results suggest that binary ZnS–ZnO films produced via annealing can be considered as promising buffer layers in potential photovoltaic solar cell applications.

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Fabrication and optical-electrical characteristics of ZnS/ZnO films by pulsed laser deposition

Cited by 5 publications

References 32 publications

Highly responsive and selective ozone sensor based on Ga doped ZnS–ZnO composite sprayed films

Highly responsive and selective ozone sensor based on Ga doped ZnS–ZnO composite sprayed films

Strong Interface Interaction of ZnO Nanosheets and MnSx Nanoparticles Triggered by Light over Wide Ranges of Wavelength to Enhance Their Removal of VOCs

Binary ZnS–ZnO films as an alternative buffer layer for solar cell applications

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