Chemically deposited cubic structured CdO thin films: Room temperature

Bulakhe, Ravindra N.; Lokhande, C.D.

doi:10.1063/1.4810321

Cited by 8 publications

(5 citation statements)

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“…The band gap energy of the prepared sample can be determined by plotting (hv) 2 vs hv and obtaining the extrapolation of this curve as shown in Figure 5(b). The band gap energy of the prepared CdO is 2.13 eV, which is matched with previous report [26,28]. The optical band gap value was reduced due to its more crystalline structure (as is seen from XRD) and transition between the partially forbidden )…”

Section: Optical Studiessupporting

confidence: 89%

“…The plot of absorbance as a function of wavelength in the range from 350-800 nm for the CdO sample is shown in Figure 5(a). It reveals the absorption edge was found at 580 nm wavelengths A similar absorption band spectra were observed by Bulakhe et al [26] using a wet chemical method. The band gap energy is determined by the following Equation (6) [27], (6) where, hv = photon energy,  = absorption coefficient, B = constant value and Eg = band gap energy.…”

Section: Optical Studiessupporting

confidence: 83%

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Photodegradation of Rhodamine-B Dye under Natural Sunlight using CdO

Lavate

Sawant

Khomane

2022

Bull. Chem. React. Eng. Catal.

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The present study includes synthesis of CdO thin film by simple and cost effective chemical bath deposition method. Cadmium monochloroaceatate were used for preparation of CdO thin film. The structural, optical properties of CdO thin film were investigated with the help of X-ray diffraction (XRD) and UV-Vis NIR double beam spectrometry. The XRD studies revealed that annealed thin film shows crystalline in nature having 48.4 nm in size. The optical band gap of thin film was found to be 2.13 eV. Scanning Electron Microscopy (SEM) images shows sphere like structure which is closely arranged with each other. The presence of functional group was confirmed by Fourier Transform Infra Red (FTIR). Brunauer–Emmett–Teller (BET) surface area analysis confirm formation of a mesoporous CdO with 6.01 m2/g surface area and 31.96 nm average pore diameter. The photocatalytic activity of prepared thin film was checked by using Rhodamine-B as a model dye under natural sunlight and found to be 48%. Copyright © 2022 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

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Section: Optical Studiessupporting

confidence: 89%

Section: Optical Studiessupporting

confidence: 83%

Photodegradation of Rhodamine-B Dye under Natural Sunlight using CdO

Lavate

Sawant

Khomane

2022

Bull. Chem. React. Eng. Catal.

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“…The formation of this minor phase in the structure of CdO was not observed for one layer of CdO but only appeared when two layers were stacked. Although the peak of Cd(OH) 2 previously appeared in the XRD patterns of the chemically deposited cubic CdO thin films 19 , it was not indexed to any structural phase. The appearance of the Cd(OH) 2 hexagonal phase in the stacked layers of CdO is possibly due to the interaction of the surface of the first CdO layer with air atmosphere during the supplying of CdO powders to the evaporation source prior to the growth of second CdO layer.…”

Section: Structural Propertiesmentioning

confidence: 95%

Effects of Si Slabs on the Performance of CdO Thin Films Designed for Optoelectronic Applications

Algarni

Qasrawi

2022

Mat. Res.

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Herein, the structural, morphological, optical and electrical properties of CdO stacked layers comprising Si slabs of thickness of 100 nm are investigated. The performance of the stacked layers, which are prepared by the thermal evaporation technique under vacuum pressure of 10 -5 mbar, is remarkably enhanced via insertion of Si thin slabs. The presence of Si slabs between the layers of CdO improves the crystallinity and surface morphology, increases the light absorbability in the ultraviolet and visible ranges of light and also increases the dielectric constant, the quality factor, and optical conductivity values. The optical conductivity parameters, which are analyzed in accordance with Drude-Lorentz approach, have shown that the insertion of the Si layers rises the values of the drift mobility of holes in CdO and lowers the free holes concentration. The energy band gap of CdO films is narrowed from 2.20 to 1.27 eV upon insertion of Si slabs. The applicability of the plasmonic CdO/Si/CdO devices as low pass filers in the frequency domain of 0.01-1.80 GHz is verified through impedance spectroscopy measurements.

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“…Zn, Gd, Mn and Pr [13][14][15][16][17]. On the other hand, the facile and cost effective fabrications of the CdO films via sol-gel spin coating, chemical bath deposition and spray pyrolysis methods have attracted immense interests due to the low production cost in addition to the possible unique physical properties of the grown nanostructures [18][19][20]. In the current work, a sol-gel spin coating technique was employed to develop the Zn@CdO nanostructured thin films with different Zn doping concentrations.…”

Section: Metal Oxide Based 2-d Semiconducting Nanostructures Have Demmentioning

confidence: 99%

Structural, Linear and Nonlinear Optical Properties of Zn@CdO Nanostructured Thin Films: A Quantitative Comparison With Dft

Khan

Gandouzi

Alshammari

et al. 2021

Preprint

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This paper presents experimental and density functional theory (DFT) investigations of Zn doping role in the Zn@CdO ternary system. Zn doped CdO nanostructures with different Zn concentrations were successfully casted on glass substrates by sol-gel spin coating method. Cubic Zn@CdO structured ternary alloyed nanostructures thin films with 0.0%, 1.0%, 2.0% and 3.0% wt. Zn concentrations were obtained. An enhancement in the lateral growth of CdO cauliflower-like nanostructures was observed after Zn addition which leads to a 2D growth of nanostructured films with improved continuity. The effect of Zn doping on the linear optical parameters such as the optical band gap, the absorption index and the refractive index were also investigated. A remarkable blue shift in the band edge was observed as Zn is incorporated into the CdO matrix. In addition, the third order nonlinear optical parameters χ(3) and n2 were calculated and found to be about 2.89×10-12 - 4.33×10-14 esu and 2.89×10-12 - 4.33×10-14 esu; respectively. A density functional theory (DFT) based Wien2k package was utilized to theoretically investigate the lattice parameters, the electronic structure, the absorption index and the refractive index of the Zn@CdO ternary nanoalloys. The role of Zn doping on the aforesaid properties was theoretically investigated for 3.125%, 6.25%, 12.5% and 25% Zn doping concentrations and was compared with the experimentally determined parameters. The combined theoretical and experimental investigations presented herein along with the detailed discussion of the obtained findings would provide a deep understanding of the opto-electronic behavior of the Zn doped CdO nanostructured films as well as their suitability for devices applications.

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Chemically deposited cubic structured CdO thin films: Room temperature

Cited by 8 publications

References 0 publications

Photodegradation of Rhodamine-B Dye under Natural Sunlight using CdO

Photodegradation of Rhodamine-B Dye under Natural Sunlight using CdO

Effects of Si Slabs on the Performance of CdO Thin Films Designed for Optoelectronic Applications

Structural, Linear and Nonlinear Optical Properties of Zn@CdO Nanostructured Thin Films: A Quantitative Comparison With Dft

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Chemically deposited cubic structured CdO thin films: Room temperature

Cited by 8 publications

References 0 publications

Photodegradation of Rhodamine-B Dye under Natural Sunlight using CdO

Photodegradation of Rhodamine-B Dye under Natural Sunlight using CdO

Effects of Si Slabs on the Performance of CdO Thin Films Designed for Optoelectronic Applications

Structural, Linear and Nonlinear Optical Properties of Zn@CdO&nbsp;Nanostructured Thin Films: A Quantitative Comparison With Dft

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Structural, Linear and Nonlinear Optical Properties of Zn@CdO Nanostructured Thin Films: A Quantitative Comparison With Dft