Temperature dependence of effective thermal conductivity and effective thermal diffusivity of CdZnSe composite

Kishore, V.; Saxena, N. S.; Saraswat, Vibhav K.; Sharma, Ram A.; Sharma, Kailash Chand; Sharma, Teena

doi:10.1088/0022-3727/39/12/018

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…CdSe is an up-and-coming candidate for photoconductive and photoelectrochemical cells, whereas zinc selenide is an essential material for light-emitting devices. Nevertheless, photo corrosion was found when applying cadmium selenide in photoelectrochemical cells, whereas ZnSe was reported to be more stable though less photoactive due to its wide band gap [15][16][17]. Two binary CdSe and ZnSe crystals (parents) can be mixed to grow Cd 1−x Zn x Se ternary alloys to overcome this shortcoming.…”

Section: Introductionmentioning

confidence: 99%

Alloy Disordering Effects on the Thermal Conductivity and Energy Gap Temperature Dependence of Cd1−xZnxSe Ternary Crystals Grown by the Bridgman Method

et al. 2023

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Investigated in this work, Cd1−xZnxSe-mixed ternary compounds were grown by the Bridgman method. Several compounds with zinc content varying in the range 0 < x < 1 were produced between two binary parents, CdSe and ZnSe crystals. Using the SEM/EDS technique, the accurate composition of formed crystals was determined along the growth axis. Thanks to that, the grown crystals’ axial and radial uniformity were determined. Characterization of the optical and thermal properties was undertaken. The energy gap was measured using photoluminescence spectroscopy for different compositions and temperatures. The bowing parameter describing the behavior of the fundamental gap with composition for this compound was found to be 0.416 ± 0.06. The thermal characteristics of grown Cd1−xZnxSe alloys were systematically studied. The thermal diffusivity and effusivity of the crystals under investigation were experimentally determined, allowing the calculation of the thermal conductivity. We applied the semi-empirical model that Sadao Adachi developed to analyze the results. Thanks to that, it was possible to estimate the contribution arising from chemical disorder to the crystal’s total resistivity.

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Section: Introductionmentioning

confidence: 99%

Alloy Disordering Effects on the Thermal Conductivity and Energy Gap Temperature Dependence of Cd1−xZnxSe Ternary Crystals Grown by the Bridgman Method

et al. 2023

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“…The effect of temperature on thermal diffusivity, thermal conductivity, heat capacity, coefficient of thermal expansion (CTE), and density of isotropic or anisotropic materials has been the subject of research by several scientists. The studies [1][2][3][4] used the laser flash method, transient plane source (TPS) [5], and modulated DSC [6] to determine the thermal diffusivity, derived heat capacity, and thermal conductivity of isotropic metals and fiber-reinforced polymer composites (FRPC).…”

Section: Introductionmentioning

confidence: 99%

Temperature dependence of thermophysical properties of carbon/polyamide410 composite

Asfew

Ivens

Moens

2022

Functional Composite Mater

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In this study, the temperature dependence of the carbon/polyamide 410 composite's heat capacity, thermal expansion, density, and thermal conductivity was investigated. The results demonstrated that the specific heat capacity of the C/PA410 composite increases with temperature, with major transitions observed at the glass transition (Tg) and melting (Tm) temperatures. Due to the presence of fibers, the CTE values in the fiber direction of C/PA410 specimens were one order of magnitude smaller than in the transverse direction. The density measurements reveal that as temperature rises, volume increases, causing density to decrease. The heat diffusivity of the C/PA410 composite was measured using the laser flash technique, which was then used to calculate thermal conductivity. The results show that the average thermal conductivity in the fiber direction increases linearly with temperature, while in the transverse direction it increases linearly with temperature up to 50 °C and then becomes constant between 50 °C and 100 °C.

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“…6 Kishore et al prepared cadmium zinc selenide composite by slow cooling of melt and studied the properties of thermal conductivity and thermal diffusivity of the films and indicated that the effective thermal conductivity and thermal diffusivity increased with temperature for all concentrations of Zn. 7 the structural and optical properties of cadmium zinc telluride thin films. They showed that the films were polycrystalline and that the crystallinity of the films increased with thermal annealing.…”

Section: Introductionmentioning

confidence: 99%

Studies on ZnCdSe thin films prepared by thermal evaporation

Priya

Shree

Ranjani

et al. 2015

Nanomaterials and Energy

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Zinc cadmium selenide (ZCS) thin films were prepared onto thoroughly cleaned glass substrates by co-evaporating highpure zinc (Zn) and cadmium selenide (CdSe) powders and the films were subsequently annealed at 100°C for 1 h in vacuum.The influence of Zn concentration on the structural, morphological, compositional and optical properties of ZCS films was studied using X-ray diffraction (XRD), field-emission scanning electron microscopy, energy-dispersive X-ray analysis and ultraviolet-visible spectroscopy, respectively. The XRD patterns confirmed the polycrystalline nature of the ZCS films. The optical band gap of the films increased from 2·07 to 2·69 eV with increasing Zn concentration, due to the replacement of Cd with Zn atoms. The increase in optical band gap with increasing Zn concentration signifies wide coverage over the electromagnetic spectrum, which allows ZCS thin films in the application areas of optoelectronic devices. Studies on ZnCdSe thin films prepared by thermal evaporation Priya, Shree, Ranjani and Sridharan ICE Publishing: All rights reserved

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Temperature dependence of effective thermal conductivity and effective thermal diffusivity of CdZnSe composite

Cited by 4 publications

References 10 publications

Alloy Disordering Effects on the Thermal Conductivity and Energy Gap Temperature Dependence of Cd1−xZnxSe Ternary Crystals Grown by the Bridgman Method

Alloy Disordering Effects on the Thermal Conductivity and Energy Gap Temperature Dependence of Cd1−xZnxSe Ternary Crystals Grown by the Bridgman Method

Temperature dependence of thermophysical properties of carbon/polyamide410 composite

Studies on ZnCdSe thin films prepared by thermal evaporation

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