ENHANCED NEAR-INFRARED FLUORESCENCE FROM DYE-DOPED CORE-SHELL Ag/SiO2 NANOWIRES

被引：2
|
作者：
Li, Min
Zhou, Zhang-Kai
Zhai, Yue-Ying
Song, Hao
Zhang, Zong-Suo
Li, Xing
Yu, Xue-Feng [1 ]
机构：
[1] Wuhan Univ, Dept Phys, Wuhan 430072, Peoples R China
来源：
MODERN PHYSICS LETTERS B | 2009年 / 23卷 / 05期
关键词：
Metal-enhanced fluorescence; metal-fluorophore interaction; heptamethine cyanine NIR laser dye; HEPTAMETHINE CYANINE DYES; RAMAN-SCATTERING; NANOPARTICLES; LUMINESCENCE; SPHERES; REGION;
D O I：
10.1142/S0217984909018928
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have studied the increase of the radiative decay rate of heptamethine cyanine NIR laser dye within core-shell Ag/SiO2 nanowires. The photoluminescence intensity and lifetime of the heptamethine cyanine dye are affected by the Ag nanowires. Both the photoluminescence intensity and the decay rate of the heptamethine cyanine dye are greatly enhanced by the Ag nanostructures and are caused by the interactions between the excited-state fluorophore and the local electric field near the metal particles.
引用
收藏
页码：709 / 714
页数：6
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