| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1554224 | Superlattices and Microstructures | 2011 | 8 Pages |
The strategy to manipulate nanoscale building blocks into well-organized heterostructures is very important to both material synthesis and nanodevice applications. In this work, highly-ordered ZnO/PbS core/shell nanowire arrays were fabricated by a facile and low temperature chemical route. Large area and well-aligned ZnO nanowire arrays were firstly fabricated on conductive glass substrates, and then the synthesis of ZnO/ZnS and ZnO/PbS core/shell nanowire arrays were realized by a chemical conversion method. The morphology, structure, and composition of the obtained nanostructures were confirmed by field-emission scanning electron microscopy, energy-dispersive X-ray analysis, and X-ray diffraction measurements. The optical properties of the synthesized nanostructures were investigated by micro-Raman and photoluminescence spectroscopy. In the synthesized ZnO/PbS core/shell nanowire arrays, the ZnO cores can provide direct conduction pathways for electron transport and PbS shells possess superior photoelectric performance. Therefore, the obtained ZnO/PbS core/shell nanostructures may have potential application in photovoltaic devices.
Graphical abstractThe prepared ZnO/PbS core/shell heterostructures demonstrate high-density and well-alignment. The synthesized products may have potential applications in solar cells.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Highly-ordered ZnO/PbS core/shell heterostructures were successfully fabricated. ► The formation mechanism of the product was discussed systematically. ► ZnO/PbS core/shell heterostructures have preferable electronic transport properties. ► The obtained ZnO/PbS core/shell heterostructures may have potential applications in solar cells.
