The Synthesis of New Chalcogenides from the System GeTe6-Cu and a Layered Structure Based on Them and an Azo Polymer for Application in Optoelectronics
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| Publicado en: | Materials vol. 18, no. 14 (2025), p. 3387-3400 |
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| Autor principal: | |
| Otros Autores: | , , , , , , |
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MDPI AG
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| Acceso en línea: | Citation/Abstract Full Text + Graphics Full Text - PDF |
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| 001 | 3233233467 | ||
| 003 | UK-CbPIL | ||
| 022 | |a 1996-1944 | ||
| 024 | 7 | |a 10.3390/ma18143387 |2 doi | |
| 035 | |a 3233233467 | ||
| 045 | 2 | |b d20250101 |b d20251231 | |
| 084 | |a 231532 |2 nlm | ||
| 100 | 1 | |a Trifonova Yordanka |u Department of Physics, University of Chemical Technology and Metallurgy, 8 Kl. Ohridski Blvd., 1756 Sofia, Bulgariadimanain@gmail.com (D.N.); lian_n@yahoo.com (L.N.); ivanova_vl@uctm.edu (V.I.); | |
| 245 | 1 | |a The Synthesis of New Chalcogenides from the System GeTe<sub>6</sub>-Cu and a Layered Structure Based on Them and an Azo Polymer for Application in Optoelectronics | |
| 260 | |b MDPI AG |c 2025 | ||
| 513 | |a Journal Article | ||
| 520 | 3 | |a New bulk chalcogenides from the system (GeTe6)1−xCux, where x = 5, 10, 15 and 20 mol%, have been synthesized. The structure and composition of the materials were studied using X-ray powder diffraction (XRD) and energy-dispersive spectroscopy (EDS). Scanning electron microscopy (SEM) was applied to analyze the surface morphology of the samples. Some thermal characteristics such as the glass transition, crystallization and melting temperature and some physico-chemical properties such as the density, compactness and molar and free volumes were also determined. The XRD patterns show sharp diffraction peaks, indicating that the synthesized new bulk materials are crystalline. The following four crystal phases were determined: Te, Cu, CuTe and Cu2GeTe3. The results from the EDS confirmed the presence of Ge, Te and Cu in the bulk samples in concentrations in good correspondence with those theoretically determined. A layered thin-film material based on Ge14Te81Cu5, which exhibits lower network compactness compared to the other synthesized new chalcogenides, and the azo polymer PAZO was fabricated, and the kinetics of the photoinduced birefringence at 444 nm was measured. The results indicated an increase in the maximal induced birefringence for the layered structure in comparison to the non-doped azo polymer film. | |
| 651 | 4 | |a United States--US | |
| 651 | 4 | |a Germany | |
| 653 | |a X ray powder diffraction | ||
| 653 | |a Chemical elements | ||
| 653 | |a Crystallization | ||
| 653 | |a Nanoparticles | ||
| 653 | |a Optoelectronics | ||
| 653 | |a Chalcogenides | ||
| 653 | |a Polymer films | ||
| 653 | |a Thin films | ||
| 653 | |a Synthesis | ||
| 653 | |a Glass transition temperature | ||
| 653 | |a Composite materials | ||
| 653 | |a Polymers | ||
| 653 | |a Azo polymers | ||
| 653 | |a Tellurium | ||
| 653 | |a Information storage | ||
| 653 | |a Electron microscopes | ||
| 653 | |a X-ray diffraction | ||
| 653 | |a Melt temperature | ||
| 653 | |a Chemical properties | ||
| 653 | |a Phase transitions | ||
| 653 | |a Birefringence | ||
| 653 | |a Diffraction patterns | ||
| 700 | 1 | |a Stoilova Ani |u Department of Physics, University of Chemical Technology and Metallurgy, 8 Kl. Ohridski Blvd., 1756 Sofia, Bulgariadimanain@gmail.com (D.N.); lian_n@yahoo.com (L.N.); ivanova_vl@uctm.edu (V.I.); | |
| 700 | 1 | |a Dimov Deyan |u Department of Physics, University of Chemical Technology and Metallurgy, 8 Kl. Ohridski Blvd., 1756 Sofia, Bulgariadimanain@gmail.com (D.N.); lian_n@yahoo.com (L.N.); ivanova_vl@uctm.edu (V.I.); | |
| 700 | 1 | |a Mateev Georgi |u Department of Physics, University of Chemical Technology and Metallurgy, 8 Kl. Ohridski Blvd., 1756 Sofia, Bulgariadimanain@gmail.com (D.N.); lian_n@yahoo.com (L.N.); ivanova_vl@uctm.edu (V.I.); | |
| 700 | 1 | |a Nazarova Dimana |u Department of Physics, University of Chemical Technology and Metallurgy, 8 Kl. Ohridski Blvd., 1756 Sofia, Bulgariadimanain@gmail.com (D.N.); lian_n@yahoo.com (L.N.); ivanova_vl@uctm.edu (V.I.); | |
| 700 | 1 | |a Lian, Nedelchev |u Department of Physics, University of Chemical Technology and Metallurgy, 8 Kl. Ohridski Blvd., 1756 Sofia, Bulgariadimanain@gmail.com (D.N.); lian_n@yahoo.com (L.N.); ivanova_vl@uctm.edu (V.I.); | |
| 700 | 1 | |a Ivanova Vladislava |u Department of Physics, University of Chemical Technology and Metallurgy, 8 Kl. Ohridski Blvd., 1756 Sofia, Bulgariadimanain@gmail.com (D.N.); lian_n@yahoo.com (L.N.); ivanova_vl@uctm.edu (V.I.); | |
| 700 | 1 | |a Lilova Vanya |u Department of Physics, University of Chemical Technology and Metallurgy, 8 Kl. Ohridski Blvd., 1756 Sofia, Bulgariadimanain@gmail.com (D.N.); lian_n@yahoo.com (L.N.); ivanova_vl@uctm.edu (V.I.); | |
| 773 | 0 | |t Materials |g vol. 18, no. 14 (2025), p. 3387-3400 | |
| 786 | 0 | |d ProQuest |t Materials Science Database | |
| 856 | 4 | 1 | |3 Citation/Abstract |u https://www.proquest.com/docview/3233233467/abstract/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text + Graphics |u https://www.proquest.com/docview/3233233467/fulltextwithgraphics/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text - PDF |u https://www.proquest.com/docview/3233233467/fulltextPDF/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch |