Phonon Confinement Effect on Lattice Thermal Conductivity of Zn4Sb3 Quantum Well Structure
We have theoretically investigated the in-plane lattice thermal conductivity of Zn4Sb3single quantum well structure taking into account spatial confinement of phonons. The calculations were carried out for free-surface quantum wells with thickness 8.5nm in the room temperature. We show that the lat...
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| Format: | Article |
| Language: | English |
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University of Baghdad
2017-05-01
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| Series: | Ibn Al-Haitham Journal for Pure and Applied Sciences |
| Online Access: | https://jih.uobaghdad.edu.iq/index.php/j/article/view/993 |
| _version_ | 1817982738921160704 |
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| author | M. R. Jubayr |
| author_facet | M. R. Jubayr |
| author_sort | M. R. Jubayr |
| collection | DOAJ |
| description |
We have theoretically investigated the in-plane lattice thermal conductivity of Zn4Sb3single quantum well structure taking into account spatial confinement of phonons. The calculations were carried out for free-surface quantum wells with thickness 8.5nm in the room temperature. We show that the lattice thermal conductivity is a significant reduce. The reduction is mostly due to the drop in the average group velocity caused by the spatial confinement of acoustic phonons and the corresponding increase in phonon relaxation rates. The predicted decrease is important for the anticipated applications of Zn4Sb3 nanostructure materials for room-temperature thermoelectric devices. Our theoretical results are in a good agreement with available experimental data for Zn4Sb3 quantum wells
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| first_indexed | 2024-04-13T23:25:19Z |
| format | Article |
| id | doaj.art-8820d4bcb2204902abbe2f23caab7126 |
| institution | Directory Open Access Journal |
| issn | 1609-4042 2521-3407 |
| language | English |
| last_indexed | 2024-04-13T23:25:19Z |
| publishDate | 2017-05-01 |
| publisher | University of Baghdad |
| record_format | Article |
| series | Ibn Al-Haitham Journal for Pure and Applied Sciences |
| spelling | doaj.art-8820d4bcb2204902abbe2f23caab71262022-12-22T02:25:06ZengUniversity of BaghdadIbn Al-Haitham Journal for Pure and Applied Sciences1609-40422521-34072017-05-01231Phonon Confinement Effect on Lattice Thermal Conductivity of Zn4Sb3 Quantum Well StructureM. R. Jubayr We have theoretically investigated the in-plane lattice thermal conductivity of Zn4Sb3single quantum well structure taking into account spatial confinement of phonons. The calculations were carried out for free-surface quantum wells with thickness 8.5nm in the room temperature. We show that the lattice thermal conductivity is a significant reduce. The reduction is mostly due to the drop in the average group velocity caused by the spatial confinement of acoustic phonons and the corresponding increase in phonon relaxation rates. The predicted decrease is important for the anticipated applications of Zn4Sb3 nanostructure materials for room-temperature thermoelectric devices. Our theoretical results are in a good agreement with available experimental data for Zn4Sb3 quantum wells https://jih.uobaghdad.edu.iq/index.php/j/article/view/993 |
| spellingShingle | M. R. Jubayr Phonon Confinement Effect on Lattice Thermal Conductivity of Zn4Sb3 Quantum Well Structure Ibn Al-Haitham Journal for Pure and Applied Sciences |
| title | Phonon Confinement Effect on Lattice Thermal Conductivity of Zn4Sb3 Quantum Well Structure |
| title_full | Phonon Confinement Effect on Lattice Thermal Conductivity of Zn4Sb3 Quantum Well Structure |
| title_fullStr | Phonon Confinement Effect on Lattice Thermal Conductivity of Zn4Sb3 Quantum Well Structure |
| title_full_unstemmed | Phonon Confinement Effect on Lattice Thermal Conductivity of Zn4Sb3 Quantum Well Structure |
| title_short | Phonon Confinement Effect on Lattice Thermal Conductivity of Zn4Sb3 Quantum Well Structure |
| title_sort | phonon confinement effect on lattice thermal conductivity of zn4sb3 quantum well structure |
| url | https://jih.uobaghdad.edu.iq/index.php/j/article/view/993 |
| work_keys_str_mv | AT mrjubayr phononconfinementeffectonlatticethermalconductivityofzn4sb3quantumwellstructure |