Phonons investigation of ZnO@ZnS core‐shell nanostructures with active layer,Journal of Raman Spectroscopy

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Phonons investigation of ZnO@ZnS core‐shell nanostructures with active layer
Journal of Raman Spectroscopy ( IF 2.4 ) Pub Date : 2020-12-17 , DOI: 10.1002/jrs.6058
Branka Hadzic ₁ , Branko Matovic ₂ , Marjan Randjelovic ₃ , Radmila Kostic ₁ , Maja Romcevic ₁ , Jelena Trajic ₁ , Novica Paunovic ₁ , Nebojsa Romcevic ₁

Affiliation

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.

中文翻译：

具有有源层的ZnO @ ZnS核壳纳米结构的声子研究

在本工作的实验研究中，报告了具有活性层的ZnO @ ZnS核壳纳米结构，该活性层是通过将氧化锌粉末与H ₂ S转化而获得的。制备的结构通过扫描电子显微镜，X射线衍射，拉曼光谱和远红外光谱进行表征。记录了ZnO中的顶表面光学声子（TSO），圆柱纳米物体的特性，ZnS的表面光学声子（SOP）模式以及ZnO @ ZnS核壳纳米结构中的SOP模式。还记录了ZnS中氧的局部模式和ZnO中硫的间隙模式。该结果归因于在ZnO核与ZnS壳之间的空间中存在活性层，这对于将这些材料用作热电材料非常重要。

更新日期：2020-12-17

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