Acta Photonica Sinica, Volume. 39, Issue 1, 25(2010)
Photoluminescent Properties in Manganese-doped Zinc Oxide Tetropods
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[0001] 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 Mn2+ s,which were placed substitutionally in a cation site of ZnO host lattice.
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WANG Ma-hua, ZHU Guang-ping, XU Chun-xiang. Photoluminescent Properties in Manganese-doped Zinc Oxide Tetropods[J]. Acta Photonica Sinica, 2010, 39(1): 25
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Received: Mar. 2, 2009
Accepted: --
Published Online: Mar. 11, 2010
The Author Email: Ma-hua WANG (wmh0304@sina.com)