Infrared-to-visible upconversion emission in Er3+ doped TeO2-WO3-Bi2O3 glasses with silver nanoparticles
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
01/11/2013
01/11/2013
02/08/2013
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Resumo |
The influence of silver nanoparticles (NPs) on the frequency upconversion luminescence in Er3+ doped TeO2-WO3-Bi2O3 glasses is reported. The effect of the NPs on the Er3+ luminescence was controlled by appropriate heat-treatment of the samples. Enhancement up to 700% was obtained for the upconverted emissions at 527, 550, and 660 nm, when a laser at 980 nm is used for excitation. Since the laser frequency is far from the NPs surface plasmon resonance frequency, the luminescence enhancement is attributed to the local field increase in the proximity of the NPs and not to energy transfer from the NPs to the emitters as is usually reported. This is the first time that the effect is investigated for tellurite-tungstate-bismutate glasses and the enhancement observed is the largest reported for a tellurium oxide based glass. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4754468] National Institute of Photonics (INCT Project) National Institute of Photonics (INCT Project) Conselho Nacional de Desenvolvimento Cientifico e Tecnologico-CNPq Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) |
Identificador |
JOURNAL OF APPLIED PHYSICS, MELVILLE, v. 112, n. 6, supl. 1, Part 4, pp. 1123-1128, SEP 15, 2012 0021-8979 http://www.producao.usp.br/handle/BDPI/37380 10.1063/1.4754468 |
Idioma(s) |
eng |
Publicador |
AMER INST PHYSICS MELVILLE |
Relação |
JOURNAL OF APPLIED PHYSICS |
Direitos |
restrictedAccess Copyright AMER INST PHYSICS |
Palavras-Chave | #TELLURITE GLASS #ENHANCEMENT #FLUORESCENCE #LUMINESCENCE #PARTICLES #PHYSICS, APPLIED |
Tipo |
article original article publishedVersion |