SUN Xiao-qi, MENG Qing-hua, MENG Qing-yun. Fabrication and Optical Properties of Eu-doped ZnO Nanorod Arrays[J]. Chinese Journal of Luminescence, 2013,34(5): 573-578
SUN Xiao-qi, MENG Qing-hua, MENG Qing-yun. Fabrication and Optical Properties of Eu-doped ZnO Nanorod Arrays[J]. Chinese Journal of Luminescence, 2013,34(5): 573-578 DOI: 10.3788/fgxb20133405.0573.
Fabrication and Optical Properties of Eu-doped ZnO Nanorod Arrays
The Eu-doped ZnO (ZnO:Eu) nanorod arrays have been successfully synthesized on nanoporous silicon pillar array (NSPA) substrates by hydrothermal method. The effective energy transfer from ZnO host to the doping ions has been revealed. The ZnO:Eu nanorod arrays could enrich the emissions of ZnO nanostructure
moreover
the fabrication method is simple under mild reaction condition. The presence of trivalent europium ions in ZnO crystal lattice has been confirmed by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Under the ultraviolet (UV) laser excitation
ZnO-related UV and near band energy blue-green emission and Eu
3+
-related red emission were observed
which were attributed to the emission of ZnO
the band edge transition
the intrinsic defects and the Eu
3+
ions transition
respectively. Based on the energy band diagram
the photoluminescence (PL) mechanism has been discussed
as well as energy transfer occurs from ZnO host to Eu
3+
ions through intrinsic defects states of ZnO in ZnO:Eu nanorods structure.
关键词
Keywords
references
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