Effect of Cu-doping on structural, optical and photoluminescence properties of CdS thin films

Muthusamy, M.; Muthukumaran, S.

doi:10.1016/j.ijleo.2015.09.186

Cited by 54 publications

(19 citation statements)

References 37 publications

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“…The low-intensity band appears at 598 cm −1 (2LO). Muthusamy et al and other researchers have reported a similar peak position [29,30] . About 7 cm − 1 shift in the Raman spectra of pure CdS compared to a shift of 20 wt% Al-containing sample because of the particle size effect.…”

Section: Vibrational Analysissupporting

confidence: 64%

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Synthesis, structure, and optical properties of nanopowders CdS: xAl (x=0, 1, 5, 10, 15 and 20%) via the sol–gel technique

Assim

2021

Egyptian Journal of Solids

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The nanocrystalline Al-doped CdS semiconductors were produced accurately by the sol-gel calcination process. The aluminum was added with different percent's (0, 1, 5, 10, 15, and 20 wt%) to the synthesized CdS. Both FT-Raman analysis and UV-VIS-NIR absorption measurements were utilized to characterize the studied semiconductors' structural and optical characteristics. The detected X-ray diffraction (XRD) patterns of the prepared CdS present a polycrystalline structure, and Al-doping does not significantly impact this range. Optical bandgaps were determined for undoped and Al-doped CdS, showing a significant change with the percentage of Al-dopants. With increasing Al-doping up to (20 percent), the optical bandgap for CdS (2.38 eV) grows to reach (2.47 eV) and the allowed transitions were found to be direct for the investigated samples. The blue shift may be the reason for the optical bandgap variations. Scanning Electron Microscope (SEM) micrographs were performed to establish the Al-doped CdS nanostructure to identify the morphological characteristics.

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Section: Vibrational Analysissupporting

confidence: 64%

“…No characteristic peak was observed for other impurities in the all samples, demonstrating the purity of the samples prepared by sol-gel calcination method. It is also obvious that the addition of Al up to 20 wt % to CdS NPs cannot change the uniform single-phase hexagonal CdS crystals [22] .…”

Section: X-ray Diffraction Analysismentioning

confidence: 99%

Synthesis, structure, and optical properties of nanopowders CdS: xAl (x=0, 1, 5, 10, 15 and 20%) via the sol–gel technique

Assim

2021

Egyptian Journal of Solids

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“…The highest value of the grain size is found to be 660.6 Å. for 3 at %. It can be said that the grain size tends to increase according as increasing In concentrations which may be attributed to the interference between In ions and CdS and In occupies the regular lattice site in CdS [39]. The higher grain size attributed to the better crystallinity of In doped CdS.…”

Section: Structural Studiesmentioning

confidence: 99%

Indium doping on the structural, surface and optical properties of CdS thin films prepared by ultrasonic spray pyrolysis method

Baturay¹

2017

Balıkesir Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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CdS nanostructures are important and useful materials for photovoltaic applications. In this paper, pure CdS and In doped CdS (CdS:In) thin films were fabricated on soda lime glass substrate using ultrasonic spray pyrolysis (USP) method, to investigate the effect In concentration on the structural behavior, surface and optical properties of the CdS thin films by X-ray diffraction (XRD), Atomic Force Microscopy (AFM) and Ultraviolet-visible (Uv-vis)

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“…Direct wide‐bandgap semiconductors, like the II–VI nanocomposite CdS are suitable for applications in a variety of photoelectronic devices working in the visible range of the electromagnetic spectrum like: light‐emitting diodes , lasers , biological labels and X‐ray detectors . Doping a CdS matrix with metallic ions allows modification to be made to the structural , electrical , and optical properties of this kind of material. The dopant used in this work is silver, which acts as an acceptor in II–VI semiconductors , inducing a potential difference between the Fermi level of silver and the conduction band of cadmium sulfide; which leads to the creation of electronic traps known as color centers .…”

Section: Introductionmentioning

confidence: 99%

Stimulation of the photoluminescent properties of CBD‐CdS thin films achieved by structural modifications resulting from Ag⁺ doping

Flores-Pacheco

Contreras-Rascón

Dı́az-Reyes

et al. 2017

Physica Rapid Research Ltrs

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The present study details the changes in photoluminescence properties stimulated by the structural changes in consequence of doping the II–VI nanocomposite thin‐film semiconductor cadmium sulfide (CdS) with the IB metallic ion Ag+. The synthesis of the matrix and doped semiconductors was performed using low‐temperature chemical bath deposition (CBD). The doping percentage of the CdS matrix was determined by energy‐dispersive X‐ray spectroscopy (EDS) with a value around 3%. The crystallographic study shows a cubic (1 1 1) preferential growth plane for the undoped material. Both X‐ray and HRTEM characterizations show the presence of a polycrystalline structure for the Ag+‐doped sample. Measurements of particle size from HRTEM micrographs confirm quantum confinement with a reduction of the average particle size from 5.46 to 4.12 nm in the doped sample. The photoluminescence study shows intense downshifted emissions in the green range of the visible spectrum. This could be due to the shallow electron traps formed by crystalline defects in the lattice, which are induced by the metallic ion. This study also shows higher‐energy emissions due to the decrease of the particle size below the effective CdS exciton Bohr radius.

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Effect of Cu-doping on structural, optical and photoluminescence properties of CdS thin films

Cited by 54 publications

References 37 publications

Synthesis, structure, and optical properties of nanopowders CdS: xAl (x=0, 1, 5, 10, 15 and 20%) via the sol–gel technique

Synthesis, structure, and optical properties of nanopowders CdS: xAl (x=0, 1, 5, 10, 15 and 20%) via the sol–gel technique

Indium doping on the structural, surface and optical properties of CdS thin films prepared by ultrasonic spray pyrolysis method

Stimulation of the photoluminescent properties of CBD‐CdS thin films achieved by structural modifications resulting from Ag⁺ doping

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Effect of Cu-doping on structural, optical and photoluminescence properties of CdS thin films

Cited by 54 publications

References 37 publications

Synthesis, structure, and optical properties of nanopowders CdS: xAl (x=0, 1, 5, 10, 15 and 20%) via the sol–gel technique

Synthesis, structure, and optical properties of nanopowders CdS: xAl (x=0, 1, 5, 10, 15 and 20%) via the sol–gel technique

Indium doping on the structural, surface and optical properties of CdS thin films prepared by ultrasonic spray pyrolysis method

Stimulation of the photoluminescent properties of CBD‐CdS thin films achieved by structural modifications resulting from Ag+ doping

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Stimulation of the photoluminescent properties of CBD‐CdS thin films achieved by structural modifications resulting from Ag⁺ doping