A facile route for preparation of CdS nanoparticles

Maleki, Mahdi; Ghamsari, M. Sasani; Mirdamadi, Sh.; Ghasemzadeh, Reza

doi:10.15407/spqeo10.01.030

Cited by 63 publications

(28 citation statements)

References 14 publications

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“…The peak near 440 nm may be attributed to a higher level excitonic emission caused by quantum confinement effect. Similar peaks for CdS were reported by Devi et al [13] at 376 nm, Bhushan et al [14] at 366 nm and Maleki et al [15] at 340 nm with similar explanation. According to them, this kind of band edge luminescence is caused by recombination of excitons and shallowly trapped electron-hole pairs.…”

Section: Photoluminescence Studiessupporting

confidence: 88%

Thin film characterization of Ce and Sn co-doped CdZnS by chemical bath deposition

Shrivastava

2019

Materials Science-Poland

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Cerium and tin co-doped cadmium zinc sulfide nanoparticles (CdZnS:Ce)Sn were synthesized by chemical bath deposition method with a fixed concentration of Ce (3.84 mol%) and three different concentrations of Sn (2 mol % and 4 mol% and 6 mol%). They showed broad photoluminescence spectra in the visible region under the ultraviolet excitation with a wavelength of 325 nm. The photoluminescence emission peaks were obtained at 540 nm, 560 nm and 570 nm for CdZnS, CdZnS:Ce and (CdZnS:Ce)Sn thin films, respectively having different concentrations of Sn. It has been observed that the photoluminescence emission peak shifted to higher wavelength region with an increase in intensity by Ce doping and Ce-Sn co-doping. Further enhancement in luminescence peak intensity has been observed by increasing concentration of Sn in (CdZnS:Ce)Sn films. Average crystallite size, measured from XRD data, was found to be increased with increasing concentration of Sn. An increase in the concentration of Sn shifted the UV-Vis absorption edge toward the higher wavelength side. Energy band gap for undoped CdZnS and Ce-Sn co-doped CdZnS varied from 2.608 eV to 2.405 eV. The SEM micrographs of CdZnS and (CdZnS:Ce)Sn films showed the leafy-like and ball-like structures. The presence of Sn and Ce was confirmed by EDAX analysis.

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Section: Photoluminescence Studiessupporting

confidence: 88%

Thin film characterization of Ce and Sn co-doped CdZnS by chemical bath deposition

Shrivastava

2019

Materials Science-Poland

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“…The broadened peaks indicate that the sizes of the particles are in the nanorange. In order to achieve more confirmative information, the Debye-Scherrer formula [18]:…”

Section: Apparatusmentioning

confidence: 99%

Particle size distribution study by small-angle X-ray scattering technique and photoluminescence property of ZnO nanoparticles

Yadav

Mishra

Pandey

2009

Journal of Experimental Nanoscience

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ZnO nanoparticles have been synthesised by thermal decomposition of zinc acetate at $800 C. The structural characteristics and size distribution of ZnO nanoparticles have been investigated by X-ray powder diffraction (XRD) and small-angle X-ray scattering (SAXS), respectively. SAXS study reveals nanoparticles are of different sizes: namely 23 wt% of 8 nm, 19 wt% of 21 nm and 58 wt% of 51 nm. These ZnO nanoparticles possess yellow visible emission at 552 nm. The polydispersity and single emission peak at 552 nm in ZnO nanoparticles suggest that the yellow emission might be a bulk property instead of having a surface origin in nanostructured ZnO. The surface impurities are characterised by Fourier-transform infrared spectroscopy. The quenching of band edge emission in ZnO nanoparticles seems due to the presence of surface impurities.

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“…CdS has excellent visible light detecting properties among the others semiconductors [4]. Surface coating of nanoparticles with different materials to produce core/shell structure is an active area of research, since such coating allows modification and tailoring of physical and chemical properties of core materials depending on synthesis conditions [5]. In this present work, the core material CdS was synthesized by simple wet chemical method and coated by polypyrrole in nanolevel.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of CdS/Polypyrrole Core/Shell Nanocomposites with Controlled Grain Size

Manohari¹,

Sweetlin²

2019

JNST

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Many challenges of core/shell nanostructures for various applications still exist. The structure including the diameter, length, spacing and the thickness of the core or shell is difficult to control precisely. Metal nanoparticles used as various types of catalysts adsorbents and sensors. They have applications in optical, electronic and magnetic devices. Majority of these applications significantly depend on the size of the nanoparticles. Therefore, the synthesis of nanoparticles with controlled grain size is important. In the present work, Cadmium sulfide (CdS) was used as the core material which coated by the polypyrrole (PPy). To form the core and the shell set, the diameter fixed and measured theoretically. The calculated amount is used to prepare the shell which is formed by addition polymerization. The XRD studies are used to determine the particle size of the core shell nanocomposite. The average particle size of CdS and CdS/PPy is 13 nm and 15 nm respectively. Fourier transform infrared (FTIR) spectra and UV-Vis spectra are used to characterize the structure and to calculate the band gap of the core/shell nanocomposite. The AFM studies give the surface morphology of the samples.

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A facile route for preparation of CdS nanoparticles

Cited by 63 publications

References 14 publications

Thin film characterization of Ce and Sn co-doped CdZnS by chemical bath deposition

Thin film characterization of Ce and Sn co-doped CdZnS by chemical bath deposition

Particle size distribution study by small-angle X-ray scattering technique and photoluminescence property of ZnO nanoparticles

Synthesis and Characterization of CdS/Polypyrrole Core/Shell Nanocomposites with Controlled Grain Size

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