Synthesis of an optimized ZnS/Au/ZnS multilayer films for solar cell electrode applications

Ezzeldien, Mohammed; Alrowaili, Z.A.; Hasaneen, M.F.

doi:10.1016/j.optmat.2021.110814

Cited by 11 publications

(8 citation statements)

References 49 publications

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“…However, the transmittance of ZnS films is still high, which indicates that ZnS films are suitable for optical window material and transparent conductive films. 28) In addition, the absorption edge of ZnS is around 350 nm, and the absorption edge moves to the long wavelength after annealing, which indicates that the annealing can affect the optical band gap of the films.…”

Section: Resultsmentioning

confidence: 99%

Characterization of ZnS films on different substrates by pulsed laser deposition

Wang,

Xing,

Feng

et al. 2023

Jpn. J. Appl. Phys.

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ZnS films were deposited on Si and quartz substrates via pulsed laser deposition, and the structure, morphology and photoelectric characteristics of as-deposited and annealed ZnS films were compared. XRD results show that ZnS films are polycrystalline, and the intensity of peak at 28.4° on Si is larger, with a narrower FWHM. AFM topographies show that the surface of ZnS films becomes rough after annealing, and the roughness on quartz is obviously larger than that on Si. The transmittance of ZnS films in the visible light region reaches 80%, which indicates that ZnS is suitable for making transparent conductive films. PL spectra show that there are two luminescence peaks at 425 and 445 nm related to the intrinsic defect levels of ZnS. Due to the small lattice mismatch, PL intensity on Si is significantly weaker than that on quartz. I-V characteristics of ZnS/p-Si heterojunctions show typical p-n junction diode-like rectification behavior.

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Section: Resultsmentioning

confidence: 99%

Characterization of ZnS films on different substrates by pulsed laser deposition

Wang,

Xing,

Feng

et al. 2023

Jpn. J. Appl. Phys.

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“…By adding the metallic layer, there is a decrease in the E g (3.76 eV for ZnS, 3.68 eV for ZCZ, and 3.6 eV for ZAZ (see table 2)). A change in the strain causes the inter-atomic spacing of semiconductors to change, resulting in an increase in the band gap [10].…”

Section: Absorption Coefficient (A) Energy Gap (E G ) and Calculationmentioning

confidence: 99%

“…Numerous benefits of ZnS include its nontoxicity, chemical stability, affordability, wide energy gap E , g ( ) and excellent transmission in the visible spectrum [4][5][6]. Therefore, ZnS is used for many applications such as displays, sensors, and lasers, as well as for solar control coatings, anti-reflective coatings, and light-emitting diodes [7][8][9][10]. As an essential catalyst for environmental protection, they can remove organic and toxic pollutants from water.…”

Section: Introductionmentioning

confidence: 99%

“…Since that time, searches on specific transparent films have focused on the D/M/D multilayer. Recent research indicates that D/M/D systems, such as titanium dioxide (TiO 2 /Au/TiO 2 ) [13], indium tin oxide (ITO/Au/ITO) [14,15], Zinc oxide (ZnO/Au/ZnS/Au) [16], and Zinc sulfide (ZnS/Cu/ ZnS) [5], (ZnS/Ag/ZnS [17], and (ZnS/Au/ZnS) [10] At room temperature, this system has very low resistance, high optical transmittance, and is chemically and thermally stable. Furthermore, the metal layer suppressed the light to produce a selective high-transparency effect [18].…”

Section: Introductionmentioning

confidence: 99%

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Effect of copper and silver as a middle layer on the structural, electrical, photocatalytic, and optical properties of ZnS/metal/ZnS films for optoelectronics applications

2023

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In this work, we utilized the thermal vacuum evaporation technique to fabricate ZnS single-layer thin films, ZnS/Cu/ZnS (ZCZ), and ZnS/Ag/ZnS (ZAZ) multilayer thin films. The influence of the middle layer of metals like copper and silver on the physical properties of ZnS/metal/ZnS multilayers is investigated. The results of the X-ray investigation demonstrate that the samples are polycrystalline, with a cubic ZnS structure and texture (111) at 2 = 29.1°. The optical investigation using Tauc's approach yields energy gap values of 3.76 eV, 3.68 eV, and 3.6 eV for ZnS, ZCZ, and ZAZ films, respectively. CO2 gas sensing efficiency of ZnS, ZCZ, and ZAZ films were found to be at different operating temperatures. The optimal temperatures for ZnS, ZCZ, and ZAZ thin films were determined to be 483 K, 693 K, and 693 K, respectively. Under ultraviolet (UV) irradiation, the photocatalytic activity of ZnS, ZCZ, and ZAZ films for the degradation of methylene blue were studied. The results suggest that the metal intermediate layer is significant in improving the photocatalytic capabilities of ZnS films. When compared to ZnS single layer film (degradation efficiency of 15% after 180 minutes of UV irradiation), ZAZ multilayer film demonstrates the highest photocatalytic activity (degradation efficiency of 50% after 180 minutes of UV irradiation). The mechanism of the metal middle layer's improved UV photoactivity is briefly discussed.

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“…In this sense, the scope is to develop a material combination, yielding an optimal balance among optical transparency, electrical conductivity, and mechanical resistance to wear upon bending. Several strategies have been pursued to this end [107][108][109][110], among them, the exploitation of metallic NP film sandwiched between two TCMs seems very promising. A recent study by Torrisi et al evidenced the peculiar mechanical properties of the assembled nanogranular nature of Ag films in a sandwiched multilayer configuration for a flexible solar device [7], as schematized in Figure 13a.…”

Section: Flexible Multilayers For Solar Cellsmentioning

confidence: 99%

Mechanical Properties of Nanoporous Metallic Ultrathin Films: A Paradigmatic Case

et al. 2021

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Nanoporous ultrathin films, constituted by a slab less than 100 nm thick and a certain void volume fraction provided by nanopores, are emerging as a new class of systems with a wide range of possible applications, including electrochemistry, energy storage, gas sensing and supercapacitors. The film porosity and morphology strongly affect nanoporous films mechanical properties, the knowledge of which is fundamental for designing films for specific applications. To unveil the relationships among the morphology, structure and mechanical response, a comprehensive and non-destructive investigation of a model system was sought. In this review, we examined the paradigmatic case of a nanoporous, granular, metallic ultrathin film with comprehensive bottom-up and top-down approaches, both experimentals and theoreticals. The granular film was made of Ag nanoparticles deposited by gas-phase synthesis, thus providing a solvent-free and ultrapure nanoporous system at room temperature. The results, bearing generality beyond the specific model system, are discussed for several applications specific to the morphological and mechanical properties of the investigated films, including bendable electronics, membrane separation and nanofluidic sensing.

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Synthesis of an optimized ZnS/Au/ZnS multilayer films for solar cell electrode applications

Cited by 11 publications

References 49 publications

Characterization of ZnS films on different substrates by pulsed laser deposition

Characterization of ZnS films on different substrates by pulsed laser deposition

Effect of copper and silver as a middle layer on the structural, electrical, photocatalytic, and optical properties of ZnS/metal/ZnS films for optoelectronics applications

Mechanical Properties of Nanoporous Metallic Ultrathin Films: A Paradigmatic Case

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