Influence of metallic nanoparticles on electric-dipole and magnetic-dipole transitions of Eu3+ doped germanate glasses

被引：87

作者：

Kassab, Luciana R. P. ^{[2
]}

da Silva, Diego S. ^{[3
]}

de Araujo, Cid B. ^{[1
]}

机构：

[1] Univ Fed Pernambuco, Dept Fis, BR-50670901 Recife, PE, Brazil

[2] FATEC SP, CEETEPS, Lab Vidros & Datacao, BR-01124060 Sao Paulo, Brazil

[3] Univ Sao Paulo, Escola Politecn, Dept Engn Sistemas Eletronicos, BR-05508900 Sao Paulo, Brazil

来源：

JOURNAL OF APPLIED PHYSICS | 2010年 / 107卷 / 11期

关键词：

europium; germanate glasses; gold; magnetic transitions; nanoparticles; photoluminescence; radiation quenching; rare earth metals; silver; RARE-EARTH IONS; FREQUENCY UP-CONVERSION; OPTICAL-PROPERTIES; AU NANOPARTICLES; SILVER PARTICLES; FLUORESCENCE; ENHANCEMENT; NANOCOMPOSITES; NANOSTRUCTURES; LUMINESCENCE;

D O I：

10.1063/1.3431347

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Luminescence properties of Eu3+ doped germanate glasses containing either silver or gold nanoparticles (NPs) were investigated for excitation at 405 nm. Enhanced emissions and luminescence quenching of the Eu3+ transitions in the range from 570 to 720 nm were observed for samples having various concentrations of metallic NPs. Electric-dipole and magnetic-dipole transitions that originate from the Eu3+ level D-5(0) exhibit large enhancement due to the presence of the metallic NPs. The results suggest that the magnetic response of rare-earth doped metal-dielectric composites at optical frequencies can be as strong as their electric response due to the confinement of the optical magnetic field. (C) 2010 American Institute of Physics. [doi:10.1063/1.3431347]

引用

页数：5

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