Influence of the heat treatment on the nucleation of silver nanoparticles in Tm3+ doped PbO-GeO2 glasses

被引：34
|
作者：
de Assumpcao, T. A. A. [3 ]
Kassab, L. R. P. [4 ]
Gomes, A. S. L. [1 ]
de Araujo, C. B. [1 ]
Wetter, N. U. [2 ]
机构：
[1] Univ Fed Pernambuco, Dept Fis, BR-50670901 Recife, PE, Brazil
[2] IPEN CNEN SP, Ctr Lasers & Aplicacoes, BR-05508000 Sao Paulo, Brazil
[3] Univ Sao Paulo, Escola Politecn, Dept Engn Sistemas Eletron, BR-05508900 Sao Paulo, Brazil
[4] Fac Tecnol Sao Paulo FATEC SP, Lab Vidros & Datacao, CEETEPS UNESP, BR-01124060 Sao Paulo, Brazil
来源：
APPLIED PHYSICS B-LASERS AND OPTICS | 2011年 / 103卷 / 01期
关键词：
OPTICAL-PROPERTIES; UP-CONVERSION;
D O I：
10.1007/s00340-010-4258-5
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Nucleation of silver nanoparticles (NPs) in Tm3+ doped PbO-GeO2 (PGO) glass is reported. The influence of the heat treatment on the nucleation of silver NPs is studied by means of transmission electron microscopy and optical spectroscopy. Two heat treatment procedures were applied in order to compare their performance. Observation of infrared-to-visible frequency upconversion (UC) luminescence of Tm3+ ions is reported and correlated with the heat-treatment procedure. Enhancement of the UC emission for samples heat treated during various time intervals is attributed to the increased local field in the vicinity of the NPs. Quenching of the UC signal was also observed and correlated with the growth of NPs amount and size.
引用
收藏
页码：165 / 169
页数：5
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