Red photoluminescence mechanism in SnO2 nanostructures

被引：0
|
作者：
H. T. Chen
X. L. Wu
S. J. Xiong
W. C. Zhang
J. Zhu
机构：
[1] Nanjing University,National Laboratory of Solid State Microstructures and Department of Physics
[2] Nanjing University of Aeronautics and Astronautics,College of Science
来源：
Applied Physics A | 2009年 / 97卷
关键词：
81.15.Gh; 78.55.Kz; 68.55.Ln;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Tin dioxide nanoribbons were fabricated for clarifying the origin of the red photoluminescence band. It is found that the red band abruptly decreases its intensity after annealing the nanoribbons in O2. The time-resolved photoluminescence decay curve shows that the red band has a luminescence lifetime of ns. The electron spin resonance spectrum discloses that the red band is related to a kind of combined oxygen-vacancy (Vo+ and Vo++) centers. Spectral analysis and theoretical calculation confirm that the red band arises from a transition between the combined oxygen-vacancy defect states in the band gap.
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页码：365 / 368
页数：3
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