Physical properties of chemically deposited ZnS thin films: Role of the solubility curves and species distribution diagrams

Trejo-Ramos, A.I.; González-Chan, I. J.; Oliva, A.I.

doi:10.1016/j.mssp.2020.105207

Cited by 16 publications

(9 citation statements)

References 43 publications

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“…As the amount of zinc acetate solution increased from 0.1 M to 0.3 M, the bandgap of the films reduced from 3.5 eV to 2.6 eV. e decrease in bandgap may be due to an increase in crystallite size as the concentration of zinc acetate in the deposition bath is increased [25]. All ZnS thin films have high absorbance in the visible light area and bandgaps in the range of 3.5 eV to 2.6 eV, making them candidate materials for absorber layers in thin-film solar cells as well as effective visible light photocatalysts [26][27][28][29][30][31].…”

Section: Optical Absorption Studymentioning

confidence: 98%

[Retracted] Studying the Effect of Metallic Precursor Concentration on the Structural, Optical, and Morphological Properties of Zinc Sulfide Thin Films in Photovoltaic Cell Applications

Saka¹,

Tesfaye²,

Kiran³

et al. 2021

Advances in Materials Science and Engineering

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Thin films of zinc sulfide (ZnS) with different concentrations of zinc acetate have been made by chemical bath deposition technique in acidic medium (pH = 5) on glass substrate using zinc acetate and sodium sulfide as sources of Zn+2 ion and S−2 ion, respectively, and ethylenediaminetetraacetate as complexing agents and sulfuric acid to adjust pH value at a constant deposition temperature of 85°C, and the deposition time of 90 minutes was used. The effect of the concentration of metallic precursor on the structural, morphological, and optical properties of chemical bath deposited zinc sulfide thin films was investigated in this study. The XRD result confirmed mixed phases of crystalline and amorphous structure dominating other phases, which is witnessed by larger crystallite size than other phases. It reveals that the thin films had hexagonal structure at the medium concentration with preferred orientation along (111) plane, and at lower and higher concentration, it showed that film has an amorphous structure in nature. The crystallinity of all the phases significantly enlarged with increasing the zinc precursor concentration. The SEM micrographs showed high-pitched edged irregular-shaped grains covering the substrate with pinholes and bangs. The optical properties investigated by the UV-VIS spectrometer specified a decrease in the optical bandgap of the films between 3.5 eV and 2.6 eV as the zinc acetate concentration in the solution increased from 0.1 to 0.2 M. It showed that the zinc sulfide had high absorption in the UV radiation. The main finding of this paper is that metallic precursor concentration has a significant role in the optical, morphological, and microstructural properties of the cobalt sulfide thin films, which are most suitable for photovoltaic applications.

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Section: Optical Absorption Studymentioning

confidence: 98%

[Retracted] Studying the Effect of Metallic Precursor Concentration on the Structural, Optical, and Morphological Properties of Zinc Sulfide Thin Films in Photovoltaic Cell Applications

Saka¹,

Tesfaye²,

Kiran³

et al. 2021

Advances in Materials Science and Engineering

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“…In recent years, a few researchers [ 98 , 124 , 125 , 126 ] had developed and employed species distribution diagrams (SDDs) and solubility curves (SCs) to undertake physicochemical analysis to analyze the synthesis of ZnS through the distinct species produced in the chemical solution as a function of the pH. It may provide the researcher with ideas before developing ZnS thin films.…”

Section: Synthesis Of Zns Thin Films Using a Chemical Bath Depositionmentioning

confidence: 99%

Effect of Chemical Bath Deposition Variables on the Properties of Zinc Sulfide Thin Films: A Review

et al. 2023

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Zinc sulfide (ZnS) thin films prepared using the chemical bath deposition (CBD) method have demonstrated great viability in various uses, encompassing photonics, field emission devices, field emitters, sensors, electroluminescence devices, optoelectronic devices, and are crucial as buffer layers of solar cells. These semiconducting thin films for industrial and research applications are popular among researchers. CBD appears attractive due to its simplicity, cost-effectiveness, low energy consumption, low-temperature compatibility, and superior uniformity for large-area deposition. However, numerous parameters influence the CBD mechanism and the quality of the thin films. This study offers a comprehensive review of the impact of various parameters that can affect different properties of ZnS films grown on CBD. This paper provides an extensive review of the film growth and structural and optical properties of ZnS thin films influenced by various parameters, which include complexing agents, the concentration ratio of the reactants, stirring speed, humidity, deposition temperature, deposition time, pH value, precursor types, and annealing temperature environments. Various studies screened the key influences on the CBD parameters concerning the quality of the resulting films. This work will motivate researchers to provide additional insight into the preparation of ZnS thin films using CBD to optimize this deposition method to its fullest potential.

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“…The value of n can be 0.5, 2, 1.5, and 3 for direct allowed, indirect allowed, direct forbidden, and indirect forbidden transitions, respectively. The band gap was estimated by extrapolating the linear part of the (𝛼h𝜈) 2 versus h𝜈 (eV) curve to the zero absorption. As shown in Figure 5b, the band gap value for the prepared thin films with Zn molar concentrations of 0.3, 0.2, and 0.1 m were found to be 3.4, 3.5, and 3.6 eV, respectively.…”

Section: Uv-vis Spectrophotometrymentioning

confidence: 99%

“…[1] ZnS compound has shown attractive properties owing to its wide band gap, good transmittance in visible range, nontoxicity, high stability, and ntype conductivity. [2][3][4][5] Various works already have used ZnS, for photovoltaic applications as a buffer layer for CIGS and CZTS. It is also investigated as an electron transport layer (ETL) for future perovskite solar cells applications, light-emitting diodes, and gas sensor applications.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of the Structural and Optical Properties of ZnS Films Deposited by Spray‐Pyrolysis Technique

Najim

Hartiti

Nkuissi

et al. 2023

Cryst. Res. Technol.

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This study aims at synthesizing zinc sulfide (ZnS) thin films using spray pyrolysis method. The effect of the Zn concentration on the physical properties of ZnS is investigated using X-ray diffraction (XRD), scanning electron microscope (SEM), UV-Vis spectrophotometer, photoluminescence (PL), and Raman spectroscopy. XRD shows a preferential orientation along the (111) direction corresponding to the ZnS cubic structure. Based on the XRD results, it is seen that low zinc concentrations compared to sulfur content can increase the crystalline quality of films. Raman spectra confirm the presence of the ZnS cubic structure observed by XRD and show the presence of sprayed ZnS vibrational modes for all films. PL emission spectrum of ZnS confirms the presence of Zn and S atoms at all molar concentrations. SEM reveals densely packed and uniformly distributed grains with precise shapes. The elemental analysis confirms the growth of stochiometric Zn/S ratio. The optical analysis shows a high transmittance around 88% in the visible range of the solar spectrum with optical band gaps varying from 3.4 to 3.6 eV. These properties are interesting and show that ZnS thin films can be used as buffer layers in thin film solar cells applications.

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Physical properties of chemically deposited ZnS thin films: Role of the solubility curves and species distribution diagrams

Cited by 16 publications

References 43 publications

[Retracted] Studying the Effect of Metallic Precursor Concentration on the Structural, Optical, and Morphological Properties of Zinc Sulfide Thin Films in Photovoltaic Cell Applications

[Retracted] Studying the Effect of Metallic Precursor Concentration on the Structural, Optical, and Morphological Properties of Zinc Sulfide Thin Films in Photovoltaic Cell Applications

Effect of Chemical Bath Deposition Variables on the Properties of Zinc Sulfide Thin Films: A Review

A Comparative Study of the Structural and Optical Properties of ZnS Films Deposited by Spray‐Pyrolysis Technique

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