Structural, electrical and optical properties of Cd1−xGdxO nanocomposite thin films

Dakhel, A.A.

doi:10.1016/j.jallcom.2010.05.063

Cited by 10 publications

(4 citation statements)

References 45 publications

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“…And that the appearance of additional peaks (CdO) at the angles 32.94° and 38.96° for the levels (111), ( 200) with the other peaks of the hydroxide represents the phase of cadmium oxide (CdO), this is consistent with the sources [20], [21]. shows Figure (2) we note that the difference in molar concentration in the deposition of the films leads to the appearance of four levels: (100), ( 111), ( 200) and ( 220), and the prevailing pattern is at the level (111), the patterns of the films show a polycrystalline structure of a cubic type. And when the molar concentration differs in the deposition, the intensity of the peaks is more severe, and this is evidence of an increase in the rate of grain size, which indicates that the hydroxide phase is fading and the concentration of the ion (Cd +2 ) is excess in the solution [22], while the (XRD) results of the (CdO) film pattern showed up Deposition of sharp peaks at the highest intensity of the pure (CdO) phase.…”

Section: Structural Properties 311 X-ray Diffractionsupporting

confidence: 68%

“…In recent years, the chemical bath deposition (CBD) method has been used to prepare nanostructures from cadmium oxide (CdO) films, as it is a simple method that does not require complicated devices and is relatively inexpensive, and is suitable for preparing thin films with a large area and various shapes [1]. The chemical bath deposition (CBD) method is one of the chemical solution deposition (CSD) methods that are used to precipitate semiconductor compounds on a solid base through the reaction that takes place inside the aqueous solution, and this method is analogous to chemical vapor deposition (CVD) [2,3]. Among II-VI semiconductors, polycrystalline CdO thin films are a representative materials with many applications such as solar cells and large-area electronic devices, and it has a wide direct energy gap equal to (2.42 eV) so it has been used as a window material containing many semiconductors such as CdTe and Cu2S.…”

Section: -Introductionmentioning

confidence: 99%

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Effects of increasing molar concentration on cadmium dioxide (CdO) nanoparticles prepared by chemical Bath deposition (CBD)

Y.Ali¹,

Ali²,

M.Ali³

2022

Tikrit J. Pure Sci.

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Polycrystalline thin films were prepared from CdO nanoparticles in the chemical Bath deposition (CBD) with different molar concentrations at (0.01, 0.03, 0.05, 0.07) M. In order to obtain the best results, the structural and optical properties of CdO films were studied under the influence of increasing molar concentration, the results of the absorbance measurements there showed a change in the absorbance spectrum of the (CdO) films upon the increase in the molar concentration in the deposition, The value of the absorbance is within the limits of short wavelengths and where the absorbance increases at the wavelength (λ≤550 nm), and we note that it increases with the decrease in the wavelength and that the increase in the molar concentration in the deposition leads to an increase in thickness where the greater the absorbance increases the thickness. All samples of the prepared films were examined using scanning electron microscopy (SEM) at 2,000x magnification in order to identify the nature of the surface of the prepared films and to note the change in particle size with increasing molar concentration in the deposition. Experimental results showed that the grain size increases its crystal growth with increasing molar concentration, and this was shown by X-ray, AFM measurements

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Section: Structural Properties 311 X-ray Diffractionsupporting

confidence: 68%

Section: -Introductionmentioning

confidence: 99%

Effects of increasing molar concentration on cadmium dioxide (CdO) nanoparticles prepared by chemical Bath deposition (CBD)

Y.Ali¹,

Ali²,

M.Ali³

2022

Tikrit J. Pure Sci.

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“…However, Taylor & Francis, our agents, and our licensors make no representations or warranties whatsoever as to the accuracy, completeness, or suitability for any purpose of the Content. Any opinions and views expressed in this publication are the opinions and views of the authors, and are not the views of or endorsed by Taylor [1][2][3][4]. Among these films, CdO has a high carrier mobility and n-type semiconducting nature with an optical band gap of ≈2.5 eV [5].…”

Section: Please Scroll Down For Articlementioning

confidence: 99%

Effect of heat treatment on the properties of Cd(OH)₂and CdO films grown by chemical bath deposition

Şahin¹,

Bayansal²,

Çakmak³

et al. 2013

Philosophical Magazine Letters

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Nanostructured cadmium hydroxide (Cd(OH) 2 ) thin films have been fabricated on glass substrates by the chemical bath deposition method and converted into cadmium oxide (CdO) films by heat treatments. Some of the films were studied as-grown and the others were annealed in air at 150, 300 and 450°C. The effects of various annealing processes on the structural, morphological and optical properties of the Cd(OH) 2 and CdO films were studied. The band gaps of the films vary from 2.74 eV to 2.32 eV for different annealing temperatures. It was observed that there is a direct dependence of the structural, morphological and optical properties on the annealing temperature of the films. X-ray diffraction (XRD) measurements showed that as-grown and annealed film at 150°C fully consist of Cd(OH) 2 and the annealed films at 300 and 450°C consist of CdO nanoparticles. The size of the nanoparticles, which were calculated from the scanning electron microscopy (SEM) figures by using a pixels program, was found to lie between 460 and 600 nm.

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“…[2,3]. CdO has received a considerable attention as the transparent electrode of CdTe-based thin film solar cells because its electro-optical properties compare with those of the traditional TCOs [4]. But, cadmium oxide is not a popular TCO material due to its low optical band gap.…”

Section: Introductionmentioning

confidence: 99%

Nanopowder synthesis of aluminum doped cadmium oxide via sol–gel calcination processing

Aydın

El-Nasser

Yakuphanoğlu

et al. 2011

Journal of Alloys and Compounds

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The structural, optical and electrical properties of undoped and Al-doped CdO powder nanostructures prepared by sol-gel calcinations method have been investigated. X-ray diffraction (XRD) results revealed that pure and Al-doped CdO have the polycrystalline with face centered cubic (FCC) structure. The crystallite size for undoped and 5, 10, 15, 20% of Al-doped CdO samples were found to be 17.2, 15.9, 16.1, 16.3 and 16.8 nm, respectively. The optical band gap of the samples were determined from the diffused reflectance spectra and E g values for undoped and 5, 10, 15, 20% of Al-doped CdO samples were found to be 1.89, 2.07, 2.03, 2.07 and 2.12 eV, respectively. The electrical conductivities of pure and Al-doped CdO were measured in the temperature range (290-420 K) and their temperature dependence was analyzed according to Arrhenius relation. The electrical conductivity results indicate that the electrical conductivity mechanism is controlled by thermally activated processes. The results showed that sol-gel calcinations technique can be effectively used to produce undoped and doped nanopowders.

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Structural, electrical and optical properties of Cd1−xGdxO nanocomposite thin films

Cited by 10 publications

References 45 publications

Effects of increasing molar concentration on cadmium dioxide (CdO) nanoparticles prepared by chemical Bath deposition (CBD)

Effects of increasing molar concentration on cadmium dioxide (CdO) nanoparticles prepared by chemical Bath deposition (CBD)

Effect of heat treatment on the properties of Cd(OH)₂and CdO films grown by chemical bath deposition

Nanopowder synthesis of aluminum doped cadmium oxide via sol–gel calcination processing

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Structural, electrical and optical properties of Cd1−xGdxO nanocomposite thin films

Cited by 10 publications

References 45 publications

Effects of increasing molar concentration on cadmium dioxide (CdO) nanoparticles prepared by chemical Bath deposition (CBD)

Effects of increasing molar concentration on cadmium dioxide (CdO) nanoparticles prepared by chemical Bath deposition (CBD)

Effect of heat treatment on the properties of Cd(OH)2and CdO films grown by chemical bath deposition

Nanopowder synthesis of aluminum doped cadmium oxide via sol–gel calcination processing

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Product

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Effect of heat treatment on the properties of Cd(OH)₂and CdO films grown by chemical bath deposition