期刊
SOLID STATE COMMUNICATIONS
卷 135, 期 4, 页码 247-250出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ssc.2005.04.027
关键词
photoluminescence; silica; nanowire; defect
The photoluminescence (PL) properties of our silica wires were investigated with PL, PL excitation and PL decay. A high brightness photoluminescence band at 2.8 eV with a shoulder around 3.0 eV was observed in our silica wires. Two PL excitation bands for the 2.8 eV emission were observed at 4.77 and 3.37 eV. The 3.37 eV excitation band is reported for the first time. The characteristic of the blue PL in our silica wires was different from that of the well-known 2.7 eV PL in bulk silica material, suggesting a negation of previous attribution of blue emission in silica nanowires. The mechanism of the PL was also discussed. (c) 2005 Elsevier Ltd. All rights reserved.
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