Luminescence properties induced by sintering of silica nanoparticles

Risultato della ricerca: Other

Abstract

The effect of sintering on the optical properties of silica nanoparticles, a mean diameter of ~14 nm, are investigated by absorption and luminescence experiments. The sintering is induced by a thermal treatment of 1000 °C for 272 hours; after that the sample is transparent, and emits a bright luminescence under UV excitation. Time resolved photoluminescence spectra excited by a tunable laser source allows to evidence four bands around 2.0 eV, 2.4 eV, 2.7 eV and 3.4 eV, peculiar to defects induced by the sintering.
Lingua originaleEnglish
Numero di pagine2
Stato di pubblicazionePublished - 2014

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sintering
luminescence
silicon dioxide
nanoparticles
tunable lasers
photoluminescence
optical properties
defects
excitation

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title = "Luminescence properties induced by sintering of silica nanoparticles",
abstract = "The effect of sintering on the optical properties of silica nanoparticles, a mean diameter of ~14 nm, are investigated by absorption and luminescence experiments. The sintering is induced by a thermal treatment of 1000 °C for 272 hours; after that the sample is transparent, and emits a bright luminescence under UV excitation. Time resolved photoluminescence spectra excited by a tunable laser source allows to evidence four bands around 2.0 eV, 2.4 eV, 2.7 eV and 3.4 eV, peculiar to defects induced by the sintering.",
author = "Roberto Boscaino and Chiara Cangialosi and Gelardi, {Franco Mario} and Marco Cannas and Luisa Spallino and Lavinia Vaccaro",
year = "2014",
language = "English",

}

TY - CONF

T1 - Luminescence properties induced by sintering of silica nanoparticles

AU - Boscaino, Roberto

AU - Cangialosi, Chiara

AU - Gelardi, Franco Mario

AU - Cannas, Marco

AU - Spallino, Luisa

AU - Vaccaro, Lavinia

PY - 2014

Y1 - 2014

N2 - The effect of sintering on the optical properties of silica nanoparticles, a mean diameter of ~14 nm, are investigated by absorption and luminescence experiments. The sintering is induced by a thermal treatment of 1000 °C for 272 hours; after that the sample is transparent, and emits a bright luminescence under UV excitation. Time resolved photoluminescence spectra excited by a tunable laser source allows to evidence four bands around 2.0 eV, 2.4 eV, 2.7 eV and 3.4 eV, peculiar to defects induced by the sintering.

AB - The effect of sintering on the optical properties of silica nanoparticles, a mean diameter of ~14 nm, are investigated by absorption and luminescence experiments. The sintering is induced by a thermal treatment of 1000 °C for 272 hours; after that the sample is transparent, and emits a bright luminescence under UV excitation. Time resolved photoluminescence spectra excited by a tunable laser source allows to evidence four bands around 2.0 eV, 2.4 eV, 2.7 eV and 3.4 eV, peculiar to defects induced by the sintering.

UR - http://hdl.handle.net/10447/96330

M3 - Other

ER -