Photoluminescent Properties in Manganese-doped Zinc Oxide Tetropods
| Autor: | 王马华 Wang Ma-hua, 朱光平 Zhu Guang-Ping, 徐春祥 Xu Chun-Xiang |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Photoluminescence
Materials science Scanning electron microscope Doping Analytical chemistry chemistry.chemical_element Zinc Copper Atomic and Molecular Physics and Optics Condensed Matter::Materials Science symbols.namesake chemistry Excited state symbols Raman scattering Wurtzite crystal structure |
| Zdroj: | ACTA PHOTONICA SINICA. 39:25-28 |
| ISSN: | 1004-4213 |
| DOI: | 10.3788/gzxb20103901.0025 |
| Popis: | Manganese-doped zinc oxide tetropods were fabricated of pure ZnO,MnO,and graphite power mixtures on a silicon wafer coated with a thin layer of copper as catalyst through vapor-phase transport method.The morphology,structure,and composition of samples were measured and examined by x-ray diffraction pattern,electron diffraction pattern,scanning electron microscopy picture,and high revolution transition electron microscopy images.Compared with un-doped samples fabricated under the same conditions,PL spectrum,and mechanism were analyzed by the combination of Raman scattering spectra and photoluminescent excitation spectra.The results that Mn-doped samples,showing hexagonal hollow shape with multitips at the front and inner,are composed of wurtzite ZnO growing along[000l]direction;both intensity and width of UV band reduced,and a new emission peak at 415 nm emerged,were observed from Mn-doped samples' PL spectrum.According to analysis based on Raman scattering and photoluminescent excitation spectra measurement,these properties should be attributed to the function as nonradiation recombination centers and d-d transition from excited states to ground state of Mn~(2+) s,which were placed substitutionally in a cation site of ZnO host lattice. |
| Databáze: | OpenAIRE |
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