Luciana Reyes Pires Kassab

Dr. Luciana Reyes Pires Kassab

Faculdade de Tecnologia de Sao Paulo
orcid

Research Focus & Metrics

Academic Career Length

29Years (1998-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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7 December 2005 in Applied Physics Letters
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LNLuz Patrícia Naranjo
Luz Patrícia Naranjo
CACid B. de Araújo
Cid B. de Araújo
OMOscar Loureiro Malta
Oscar Loureiro Malta
PSPetrus Santa-Cruz
Petrus Santa-Cruz
Luciana Reyes Pires KassabLuciana Reyes Pires Kassab
Luciana Reyes Pires Kassab
Pr3+ -doped PbO–GeO2 (PGO) glasses containing silver nanoparticles (NPs) were prepared and their spectroscopic characteristics were studied. The PGO samples and the nucleation of silver NP were obtained melting the starting oxide powders, quenching and annealing. Transmission electron microscopy was used to characterize the NP size distribution. Isolated silver particles with average diameter of 2 nm and aggregates with dimensions smaller than 100 nm were observed. Optical absorption and luminescence experiments were performed to investigate the properties of the composite system. Enhancement of the Pr3+ ions’ luminescence was observed due to the presence of the silver NP.

19 February 2007 in Applied Physics Letters
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Davinson Mariano da SilvaDavinson Mariano da Silva
Davinson Mariano da Silva
Luciana Reyes Pires KassabLuciana Reyes Pires Kassab
Luciana Reyes Pires Kassab
SLStefan R. Lüthi
Stefan R. Lüthi
CACid B. de Araújo
Cid B. de Araújo
AGAnderson S. L. Gomes
Anderson S. L. Gomes
MBMaria José Valenzuella Bell
Maria José Valenzuella Bell
The authors report the infrared-to-visible frequency upconversion (UPC) process in Er3+ doped PbO–GeO2 glasses containing silver nanoparticles (NPs) with an average diameter of 2.2nm . The absorption spectra of the samples present a band centered at 470nm due to the surface plasmons associated with the NPs. The intensity of the band grows with increasing NP concentration. The experiments were performed by exciting the samples with a 980nm diode laser and observing the UPC emissions in the red-green region. The enhanced UPC intensity is attributed to the local field effect in the proximity of the NPs.

19 October 2008 in Applied Physics B
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Luciana Reyes Pires KassabLuciana Reyes Pires Kassab
Luciana Reyes Pires Kassab
FBF. A. Bomfim
F. A. Bomfim
JMJ. R. Martinelli
J. R. Martinelli
NWNiklaus Wetter
Niklaus Wetter
JNJ. J. Neto
J. J. Neto
CACid B. de Araújo
Cid B. de Araújo

15 November 2007 in Journal of Applied Physics
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Luciana Reyes Pires KassabLuciana Reyes Pires Kassab
Luciana Reyes Pires Kassab
CACid B. de Araújo
Cid B. de Araújo
RKRenata A. Kobayashi
Renata A. Kobayashi
RPRicardo de Almeida Pinto
Ricardo de Almeida Pinto
Davinson Mariano da SilvaDavinson Mariano da Silva
Davinson Mariano da Silva
We studied the influence of silver nanoparticles (NPs) in the luminescence properties of TeO2–PbO–GeO2 glass doped with trivalent praseodymium (Pr3+) ions. The experiments were performed with samples containing different concentrations of NPs controlled by heat treatment of the glass. The enhancement of the Stokes luminescence with the increase of the NPs concentration was observed for samples excited at 454nm. The influence of the NPs on the frequency upconversion (anti-Stokes) emissions of Pr3+ under excitation at 520nm was also investigated. In this case, enhancement of the emissions around 460 and 486nm was observed and the excitation pathway is also discussed.

1 December 2016 in Solar Energy Materials and Solar Cells
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LFLuciano de A. Florêncio
Luciano de A. Florêncio
LMLuis Arturo Gómez Malagón
Luis Arturo Gómez Malagón
BLBismarck Costa Lima
Bismarck Costa Lima
AGAnderson S.L. Gomes
Anderson S.L. Gomes
JGJ.A.M. Garcia
J.A.M. Garcia
Luciana Reyes Pires KassabLuciana Reyes Pires Kassab
Luciana Reyes Pires Kassab

1 January 2008 in Optics Communications
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Journal Article
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RARicardo de Almeida
Ricardo de Almeida
Davinson Mariano da SilvaDavinson Mariano da Silva
Davinson Mariano da Silva
Luciana Reyes Pires KassabLuciana Reyes Pires Kassab
Luciana Reyes Pires Kassab
CACid B. de Araújo
Cid B. de Araújo