Mechanism of intense blue photoluminescence in silica wires

被引：23

作者：

Chen, Z ^{[1
]}

Wang, YX ^{[1
]}

He, HP ^{[1
]}

Zou, YM ^{[1
]}

Wang, JW ^{[1
]}

Li, Y ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2005年 / 135卷 / 04期

基金：

中国国家自然科学基金;

关键词：

photoluminescence; silica; nanowire; defect;

D O I：

10.1016/j.ssc.2005.04.027

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

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.

引用

页码：247 / 250

页数：4

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