Journal ArticleDOI
Nanocrystalline ZnS thin films by chemical bath deposition method and its characterization
TLDR
In this paper, the structural and surface topography of ZnS films have been investigated by x-ray diffraction and scanning electron microscope, and the effect of annealing is studied.Abstract:
Zinc sulfide is a wide band gap semiconductor with a range of potential applications in optoelectronic devices. ZnS nanocrystalline thin films are prepared by chemical bath deposition on glass substrates. The chemical bath is an aqueous solution of zinc chloride, thiourea, ammonia and hydrazine. Governing factors related to the growth condition were the concentration of precursor solution, growth temperature, concentration of aqueous ammonia and growth duration. The structural and the surface topography of ZnS films have been investigated by x-ray diffraction and scanning electron microscope. The effect of annealing is studied. The x-ray diffraction study reveals that both powder and thin films are polycrystalline in nature and have a composition corresponding to the cubic structure [β-ZnS]. The films are very close to ZnS stoichiometry and no organic compounds, Zn(OH)2 or ZnO species were observed as impurities. As it is also revealed from x-ray diffraction analysis, the average size of these nanocrystallites is about 3 nm using Scherrer formula. SEM characterization shows that the sample surface consisted of small uniform grains and was free from pinholes. Obviously, it is evident that aggregation of grains on the substrate forms the thin film. The films showed a high transmission and a wide band gap of 3.83 eV. This value is larger than the typical value of the bulk ZnS (~3.6 eV), probably due to the quantum size effect as expected for the nanocrystalline nature of the films. The wide band gap of these films makes it possible to use them as window layer for solar cells. Copyright © 2012 John Wiley & Sons, Ltd.read more
Citations
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Journal ArticleDOI
Preparation and characterization of ZnS thin films prepared by chemical bath deposition
TL;DR: In this article, the structural, stoichiometric proportion, morphology and optical properties of zinc sulfide thin films were investigated as a function of thiourea and ammonia concentrations using X-ray diffraction (XRD), energy-dispersive spectroscopy (EDS), scanning electron microscopy (SEM) and UV-visible spectrophotometry measurements.
Journal ArticleDOI
Substrate dependent structural, optical and electrical properties of ZnS thin films grown by RF sputtering
TL;DR: In this paper, a comparative study of the structural, optical and electrical properties of ZnS thin films was performed using X-ray diffraction (XRD), scanning electron microscopy (SEM), optical and current-voltage measurements.
Journal ArticleDOI
Fabrication and characterization of nano-structured ZnS thin films as the buffer layers in solar cells
TL;DR: In this article, high quality nanocrystalline ZnS thin films were deposited on glass substrates by a chemical bath deposition (CBD) method from an aqueous solution containing triethylamine, as a nontoxic complexing agent for zinc ions, at temperatures ranging from 50 to 90 °C.
Journal ArticleDOI
Optimising conditions for the growth of nanocrystalline ZnS thin films from acidic chemical baths
Muhammad Saeed Akhtar,Muhammad Saeed Akhtar,Mohammad Azad Malik,Saira Riaz,Shahzad Naseem,Paul O׳Brien +5 more
TL;DR: In this paper, the growth of nanocrystalline zinc sulfide thin films onto glass substrates by chemical bath deposition has been optimized at acidic pH, and the observed band gap (3.78 eV) of the deposited thin films is higher than that reported for cubic phase of bulk ZnS.
References
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Book
Advanced Inorganic Chemistry
TL;DR: Cotton and Wilkinson's Advanced Inorganic Chemistry (AIC) as discussed by the authors is one of the most widely used inorganic chemistry books and has been used for more than a quarter century.
Journal ArticleDOI
Chemical deposition method for metal chalcogenide thin films
TL;DR: In this article, the authors have described in detail, chemical bath deposition method of metal chalcogenide thin films, it is capable of yielding good quality thin films and their preparative parameters, structural, optical, electrical properties etc.
Journal ArticleDOI
Semiconductor thin films by chemical bath deposition for solar energy related applications
TL;DR: In this article, the basic concepts underlying the chemical bath deposition technique and recipes developed in our laboratory during the past ten years for the deposition of good-quality thin films of CdS, CdSe, ZnS, PbSe, SnS, Bi2S3, BiSe3, SbS3 Sb2S2, CuS, CuSe, etc.
Journal ArticleDOI
ZnS precipitation: morphology control
TL;DR: In this paper, the authors investigated the use of seed sols based on nanosized CuS, ZnS and S particles in order to obtain well defined phosphor particles of micron-scale diameter.
Journal ArticleDOI
Process and Film Characterization of Chemical‐Bath‐Deposited ZnS Thin Films
J. M. Doña,J. Herrero +1 more
TL;DR: In this article, the structural, optical, chemical, and electrical properties of the ZnS thin films deposited by this method have been studied and electron diffraction (EDS) analysis has demonstrated that the films are highly stoichiometric.
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