A chemical method for the preparation of thin films of CdO and ZnO

Benramdane, N.; Murad, W.A.; Misho, R. H.; Ziane, Mohamed Issam; Kebbab, Z.

doi:10.1016/s0254-0584(97)80104-6

Cited by 106 publications

(45 citation statements)

References 3 publications

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“…The absorption coefficient,α determines effective penetration distance of light with a particular wavelength inside the material. As seen from of AgI were observed at between 320 and 420 nm with pH: 2, 3, 4, 5 to be similar with the findings in literature, so the transmission and reflection curves are touching each other in these wavelengths 4,[27][28][29] . In terms of optical properties; if you produced AgI thin crystalline layers with different solvents with spray pyrolysis technique, exciton peak of AgI was observed around 420 nm dispersion in water when 360-495 nm aged in 2-propanol.…”

Section: Optical Propertiessupporting

confidence: 90%

Effect of pH on Optic and Structural Characterization of Chemical Deposited AgI Thin Films

Tezel

Kariper

2017

Mat. Res.

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AgI thin films were grown on amorphous commercial glass substrates with chemical bath deposition (CBD) at different pH values (2,3,4,5,6), 6 hours deposition time and 60 °C. The structure of the nanocrystals was characterized by X-ray diffraction (XRD). The ratio of Ag + and I -ions changed the crystalline structures. The presence of the Ag + ions produces the γ-phase of AgI and excess of iodine concentration produces β-phase of AgI. The pH: 4 was like a transition pH for these phases. The number of crystallites per unit area has maximum value at pH: 5, as the structure is re-crystallization to hexagonal phase. Also, the thicknesses of produced thin films were decreased with increased pH values. Therefore, transmission, reflection, extinction coefficients and refractive index of the materials were affected by thicknesses, and calculated to be 32, 35, 3, 11, 9 (%) -27, 25, 61, 45, 49 (%) -0.036, 0.032, 0.067, 0.107, 0.075 and 3.21, 3.02, 5.16, 8.35, 5.70 in 550 nm at pH: 2-3-4-5-6 values, respectively. The exciton peaks of AgI were observed at between 320 and 420 nm. Surface properties were investigated by using scanning electron microscopy (SEM).

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Section: Optical Propertiessupporting

confidence: 90%

Effect of pH on Optic and Structural Characterization of Chemical Deposited AgI Thin Films

Tezel

Kariper

2017

Mat. Res.

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“…[25], in which MnTe thin films were obtained by using electrodeposition method. The corresponding E g values are also given in Table II. The refraction index n and extinction coefficient k of MnTe 2 films are given by formulae [26]: …”

Section: Resultsmentioning

confidence: 99%

Influence of pH on the Structural and Optical Properties of Polycrystalline MnTe₂ Thin Films Produced by Chemical Bath Deposition Method

Kariper

Göde

2017

Acta Phys. Pol. A

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Polycrystalline manganese ditelluride (MnTe2) thin films are synthesized on commercial glass substrates by chemical bath deposition technique at different pH values (pH = 9, 10, 11 and 12). The effect of pH on the structural and optical properties of chemically deposited MnTe2 thin films have been investigated in this study. The structure and optical properties of the films are characterized by X-ray diffraction and optical absorption spectroscopy. The X-ray diffraction results suggest that the films are polycrystalline with a mixture of dominant cubic MnTe2 phase and few traces of orthorhombic MnTeO3 and MnTe2O5 phases. The optical band gap of the films increases approximately from 1.66 eV to 2.62 eV with increasing pH. Moreover, optical parameters of the films such as refractive index, extinction coefficient, real and imaginary dielectric constants are investigated using absorption and transmittance spectra taken from the UV-vis spectrophotometer. At 600 nm wavelength, refractive index and extinction coefficient values vary in the range of 1.39-1.55 and 0.17-0.23, respectively. An increase in optical band gap could be attributed to the quantum confinement effect.

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“…The refractive indices (n) of the thin films were determined from equation (2) [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32]. As shown in Fig.…”

Section: Volume 33mentioning

confidence: 99%

Structural and Optical Properties of Fe<sub>2</sub>O<sub>3</sub>-NiO Mixed Thin Films Prepared by Chemical Spray Pyrolysis

Mohmmed

Habubi

2014

ILCPA

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Mixed Fe 2 O 3 -NiO thin films have been prepared by chemical Spray pyrolysis technique onto glass substrate preheated to 450 °C. The thickness of thin films was found to be (400 ±20) nm. XRD measurements reveal that all the film exhibit polycrystalline hexagonal wrutzite with a preferred orientation along (104) plane for pure and 10 % and 20 % Ni, while for the rest the structure was amorphous. AFM analysis indicate a nanostructure for all the films. The optical energy gap was found to be increased from optical transitions seems to be direct and the optical energy gap seems to be increased from 2.5 to 2.69 eV as the percentage of NiO increase.

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A chemical method for the preparation of thin films of CdO and ZnO

Cited by 106 publications

References 3 publications

Effect of pH on Optic and Structural Characterization of Chemical Deposited AgI Thin Films

Effect of pH on Optic and Structural Characterization of Chemical Deposited AgI Thin Films

Influence of pH on the Structural and Optical Properties of Polycrystalline MnTe₂ Thin Films Produced by Chemical Bath Deposition Method

Structural and Optical Properties of Fe<sub>2</sub>O<sub>3</sub>-NiO Mixed Thin Films Prepared by Chemical Spray Pyrolysis

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A chemical method for the preparation of thin films of CdO and ZnO

Cited by 106 publications

References 3 publications

Effect of pH on Optic and Structural Characterization of Chemical Deposited AgI Thin Films

Effect of pH on Optic and Structural Characterization of Chemical Deposited AgI Thin Films

Influence of pH on the Structural and Optical Properties of Polycrystalline MnTe2 Thin Films Produced by Chemical Bath Deposition Method

Structural and Optical Properties of Fe<sub>2</sub>O<sub>3</sub>-NiO Mixed Thin Films Prepared by Chemical Spray Pyrolysis

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Influence of pH on the Structural and Optical Properties of Polycrystalline MnTe₂ Thin Films Produced by Chemical Bath Deposition Method