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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/29717


    Title: Optical and structural properties of Eu-diffused and doped ZnO nanowires
    Authors: Pan,CJ;Chen,CW;Chen,JY;Huang,PJ;Chi,GC;Chang,CY;Ren,F;Pearton,SJ
    Contributors: 光電科學研究中心
    Keywords: BEAM EPITAXY;GAN;PHOTOLUMINESCENCE;GROWTH;FILMS;TM;NANOCRYSTALS;TEMPERATURE;ER
    Date: 2009
    Issue Date: 2010-06-30 15:39:26 (UTC+8)
    Publisher: 中央大學
    Abstract: Single crystal ZnO nanowires diffused with europium (Eu) from a solid source at 900 degrees C for 1 h or doped with Eu during growth have been characterized. The ZnO nanowires were grown by chemical vapor deposition on Si substrates employing Au as a catalyst. The diameter of the resulting nanowires was similar to 200 nm with a length of 1 mu m. Photoluminescence spectra excited by a He-Cd laser at room temperature showed the green luminescence at 515 nm in Eu-diffused nanowires. A small red shift of near-band-edge emission of ZnO nanowires was observed in the diffused wires, but sharp emission from Eu-3 ions was not present. Transmission electron microscopy shows crystalline Eu2O3 formation on the diffused nanowire surface, which forms a coaxial heterostructure system. When Eu was incorporated during the nanowire growth, the sharp D-5(0)-F-7(2) transition of the Eu3+ ion at around 615 nm was observed. (C) 2009 Elsevier B.V. All rights reserved.
    Relation: APPLIED SURFACE SCIENCE
    Appears in Collections:[光電科學研究中心] 期刊論文

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