Localized surface plasmon enhanced photoluminescence of ZnO nanosheets by Au nanoparticles
| Autor: | See Jong Leem, Rizwan Khan, Kang Bin Bae, In Hwan Lee, Periyayya Uthirakumar |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Photoluminescence Nanostructure Mechanical Engineering Nanoparticle Nanotechnology 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics medicine.disease_cause 01 natural sciences Hydrothermal circulation Crystallinity Electron transfer Chemical engineering Mechanics of Materials 0103 physical sciences medicine General Materials Science 0210 nano-technology Ultraviolet Localized surface plasmon |
| Zdroj: | Materials Letters. 163:8-11 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/j.matlet.2015.10.033 |
| Popis: | ZnO nanosheets were synthesized by a facile low temperature hydrothermal method and the Au nanoparticles were decorated on the surface of ZnO nanosheets by an in-situ solution method. The ZnO nanostructures had sheet-like morphology with relatively uniform size and possessed high crystallinity. The average diameter of Au nanoparticles decorated on the ZnO nanosheets was around 10–20 nm. The ultraviolet emission from Au decorated ZnO nanosheets was greatly enhanced and the green emission was significantly suppressed compared with the bare ZnO nanosheets. This excellent photoluminescence performance was attributable to the surface-plasmon-mediated sequential transfer of defect energy from ZnO to Au and electron transfer from excited Au to ZnO. |
| Databáze: | OpenAIRE |
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