Alloy Disordering Effects on the Thermal Conductivity and Energy Gap Temperature Dependence of Cd<sub>1−x</sub>Zn<sub>x</sub>Se Ternary Crystals Grown by the Bridgman Method
Investigated in this work, Cd<sub>1−x</sub>Zn<sub>x</sub>Se-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...
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MDPI AG
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| author | Karol Strzałkowski Ali Abouais Amine Alaoui-Belghiti Diksha Singh Abdelowahed Hajjaji |
| author_facet | Karol Strzałkowski Ali Abouais Amine Alaoui-Belghiti Diksha Singh Abdelowahed Hajjaji |
| author_sort | Karol Strzałkowski |
| collection | DOAJ |
| description | Investigated in this work, Cd<sub>1−x</sub>Zn<sub>x</sub>Se-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 Cd<sub>1−x</sub>Zn<sub>x</sub>Se 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. |
| first_indexed | 2024-03-11T03:03:25Z |
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| id | doaj.art-34c83f94d6a54afc94e8e0bd77b67c83 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T03:03:25Z |
| publishDate | 2023-05-01 |
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| spelling | doaj.art-34c83f94d6a54afc94e8e0bd77b67c832023-11-18T08:08:10ZengMDPI AGMaterials1996-19442023-05-011611394510.3390/ma16113945Alloy Disordering Effects on the Thermal Conductivity and Energy Gap Temperature Dependence of Cd<sub>1−x</sub>Zn<sub>x</sub>Se Ternary Crystals Grown by the Bridgman MethodKarol Strzałkowski0Ali Abouais1Amine Alaoui-Belghiti2Diksha Singh3Abdelowahed Hajjaji4Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University in Toruń, ul. Grudziądzka 5, 87-100 Toruń, PolandInstitute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University in Toruń, ul. Grudziądzka 5, 87-100 Toruń, PolandEngineering Science for Energy Lab, National School of Applied Sciences, Chouaib Doukkali University of El Jadida, El Jadida 24000, MoroccoInstitute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University in Toruń, ul. Grudziądzka 5, 87-100 Toruń, PolandEngineering Science for Energy Lab, National School of Applied Sciences, Chouaib Doukkali University of El Jadida, El Jadida 24000, MoroccoInvestigated in this work, Cd<sub>1−x</sub>Zn<sub>x</sub>Se-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 Cd<sub>1−x</sub>Zn<sub>x</sub>Se 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.https://www.mdpi.com/1996-1944/16/11/3945bulk crystal growthII-VI alloyslattice disorderbowing parameterthermal conductivityCdZnSe crystals |
| spellingShingle | Karol Strzałkowski Ali Abouais Amine Alaoui-Belghiti Diksha Singh Abdelowahed Hajjaji Alloy Disordering Effects on the Thermal Conductivity and Energy Gap Temperature Dependence of Cd<sub>1−x</sub>Zn<sub>x</sub>Se Ternary Crystals Grown by the Bridgman Method Materials bulk crystal growth II-VI alloys lattice disorder bowing parameter thermal conductivity CdZnSe crystals |
| title | Alloy Disordering Effects on the Thermal Conductivity and Energy Gap Temperature Dependence of Cd<sub>1−x</sub>Zn<sub>x</sub>Se Ternary Crystals Grown by the Bridgman Method |
| title_full | Alloy Disordering Effects on the Thermal Conductivity and Energy Gap Temperature Dependence of Cd<sub>1−x</sub>Zn<sub>x</sub>Se Ternary Crystals Grown by the Bridgman Method |
| title_fullStr | Alloy Disordering Effects on the Thermal Conductivity and Energy Gap Temperature Dependence of Cd<sub>1−x</sub>Zn<sub>x</sub>Se Ternary Crystals Grown by the Bridgman Method |
| title_full_unstemmed | Alloy Disordering Effects on the Thermal Conductivity and Energy Gap Temperature Dependence of Cd<sub>1−x</sub>Zn<sub>x</sub>Se Ternary Crystals Grown by the Bridgman Method |
| title_short | Alloy Disordering Effects on the Thermal Conductivity and Energy Gap Temperature Dependence of Cd<sub>1−x</sub>Zn<sub>x</sub>Se Ternary Crystals Grown by the Bridgman Method |
| title_sort | alloy disordering effects on the thermal conductivity and energy gap temperature dependence of cd sub 1 x sub zn sub x sub se ternary crystals grown by the bridgman method |
| topic | bulk crystal growth II-VI alloys lattice disorder bowing parameter thermal conductivity CdZnSe crystals |
| url | https://www.mdpi.com/1996-1944/16/11/3945 |
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