Structural and Optical Properties of Different Composition of Se&lt;SUB&gt;90&lt;/SUB&gt;Cd&lt;SUB&gt;10-x&lt;/SUB&gt;In&lt;SUB&gt;x&lt;/SUB&gt; thin Films by Vacuum Evaporation Technique

Dwivedi, D. K.; Shukla, Neeraj; Pathak, Himanshu

doi:10.12691/ajmse-2-2-1

Cited by 6 publications

(2 citation statements)

References 51 publications

(45 reference statements)

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“…This indicates that existence tensile micro-strain included into the ZnSe lattice [7,35]. as well, arising donor sites could be the cause of the rising dislocation density and strain with increased Cu ratio [36]. On the other hand, the length of bond, l was obtained from the formula [37]…”

Section: X-ray Characterizationmentioning

confidence: 99%

Effect of Cu ratios dopant on ZnSe thin films structural and optical properties

Abdel-Salam,

Sabry,

Yousef

et al. 2023

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This study focused to prepare poly-crystalline (ZnSe)1-x Cux thin films, where x values vary from 0 to 0.1 %. the effect of Cu ratios dopant on structural, phases and optical properties has been investigated. As prepared thin films were deposited onto a cleaning glass substrate under high vacuum conditions (10-7 mbr) at room temperature using the “ evaporation technique”. The analysis results according to data of the X-ray diffraction technique of all films refer to the growth polycrystalline with hexagonal wurtzite structure of Zn-Se with no presence of any further phases. The changes in numerous parameters such as volume of the unit cell, atomic packing factor, dislocation density, lattice constant and bond length with the Cu ratio were estimated and described. As well, the crystallite sizes,D, the lattice micro-strain,ε and dislocation density,δ have been calculated the results evidence that the micro-structural parameters enhancement with increment Cu atoms. On the other hand, the optical parameters of the as-synthesized films (ZnSe)1-xCux (0 ≤ x ≤ 0.1) were performed utilizing “UV–V is spectro -photometer” with a wavelength range of 300 to 2400 nm. The results show that as the Cu ratio increases, the absorption edge shifts to a higher wavelength and the optical band gap, Eg opt decreases from 2.63 eV to 2.52 eV. Finally, the behaviour of the optical constant parameters as real,εr/ imaginary, εi parts, dissipation factor,tan δ, volume/surface energy loss functions and dispersion parameters were shown to depend on the variation of the Cu ratio and wavelengths.

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Section: X-ray Characterizationmentioning

confidence: 99%

Effect of Cu ratios dopant on ZnSe thin films structural and optical properties

Abdel-Salam,

Sabry,

Yousef

et al. 2023

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“…Chalcogenide glasses have attracted much attention due to their potential applications in optoelectronic devices, solar cell, memory switching, infrared photo detectors and bio-sensors [1][2][3][4][5]. A variety of applications including phase change memory, photo receivers, and change of electrical resistance have been reported using these glasses [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Dielectric relaxation and AC conductivity studies of Se₉₀Cd_10−xIn_xglassy alloys

Shukla

Dwivedi

2016

Journal of Asian Ceramic Societies

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Chalcogenide glassy alloys of Se 90 Cd 10−x In x (x = 2, 4, 6, 8) are synthesized by melt quench technique. The prepared glassy alloys have been characterized by techniques such as differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and energy dispersive X-ray (EDAX). Dielectric properties of Se 90 Cd 10−x In x (x = 2, 4, 6, 8) chalcogenide glassy system have been studied using impedance spectroscopic technique in the frequency range 42 Hz to 5 MHz at room temperature. It is found that the dielectric constants ε , dielectric loss factor ε and loss angle Tan ı depend on frequency. ε , ε and loss angle Tan ı are found to be decreasing with the In content in Se 90 Cd 10−x In x glassy system. AC conductivity of the prepared sample has also been studied. It is found that AC conductivity increases with frequency where as it has decreasing trend with increasing In content in Se-Cd matrix. The semicircles observed in the Cole-Cole plots indicate a single relaxation process.

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