Phonons investigation of ZnO@ZnS core-shell nanostructures with active layer
| Autor: | Jelena Trajic, Nebojša Romčević, Branko Matović, B. Hadzic, Maja Romcevic, N. Paunović, Radmila Kostić, Marjan Randjelovic |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Nanostructure
Materials science core-shell nanostructures business.industry Phonon active layer 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology thermoelectric 01 natural sciences 0104 chemical sciences Active layer Core shell symbols.namesake local mode surface phonons Thermoelectric effect symbols Optoelectronics General Materials Science 0210 nano-technology business Raman spectroscopy Spectroscopy |
| Zdroj: | Journal of Raman Spectroscopy |
| Popis: | In the present work experimental study of the ZnO@ZnS core-shell nanostructure with an active layer obtained by conversion of zinc oxide powders with H2S is reported. Тhe prepared structures were characterized by scanning electron microscopy, X-ray diffraction, Raman spectroscopy, and far-infrared spectroscopy. Top surface optical phonon (TSO) in ZnO, characteristic for the cylindrical nano-objects, the surface optical phonon (SOP) mode of ZnS, and SOP modes in ZnO@ZnS core-shell nanostructure are registered. Local mode of oxygen in ZnS and gap mode of sulfur in ZnO are also registered. This result is due to the existence of an active layer in the space between ZnO core and ZnS shell, which is very important for the application of these materials as thermoelectrics. © 2020 John Wiley & Sons, Ltd. |
| Databáze: | OpenAIRE |
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