Infrared-to-visible upconversion emission in Er3+ doped TeO2-WO3-Bi2O3 glasses with silver nanoparticles


Autoria(s): de Campos, Vitor P. P.; Kassab, Luciana R. P.; de Assumpcao, Thiago A. A.; da Silva, Diego S.; de Araujo, Cid B.
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

01/11/2013

01/11/2013

02/08/2013

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

http://dx.doi.org/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