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Phonons investigation of ZnO@ZnS core‐shell nanostructures with active layer
Author(s) -
Hadzic Branka,
Matovic Branko,
Randjelovic Marjan,
Kostic Radmila,
Romcevic Maja,
Trajic Jelena,
Paunovic Novica,
Romcevic Nebojsa
Publication year - 2021
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.6058
Subject(s) - raman spectroscopy , materials science , nanostructure , phonon , zinc , scanning electron microscope , layer (electronics) , spectroscopy , shell (structure) , nanotechnology , optoelectronics , optics , composite material , condensed matter physics , physics , metallurgy , quantum mechanics
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 H 2 S 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.