Effects induced by UV laser radiation on the blue luminescence of silica nanoparticles

Simonpietro Agnello; Lavinia Vaccaro; Luisa Spallino; Marco Cannas

Effects induced by UV laser radiation on the blue luminescence of silica nanoparticles

Simonpietro Agnello, Lavinia Vaccaro, Luisa Spallino, Marco Cannas

Research output: Contribution to journal › Article › peer-review

Abstract

The effects induced on the blue luminescence centered around 2.8 eV, characteristic of silica nanoparticles, were investigated by monitoring its intensity during and after exposure to the third and the fourth harmonic of a Nd:YAG pulsed laser. The luminescence trend is found to be dependent on the UV photon energy: 3.50 eV photons induce a partial bleaching followed by a recovery in the post-irradiation stage; 4.66 eV photons cause a total bleaching permanent after the irradiation. These results are interpreted as the conversion of luminescent defects towards stable and metastable configurations.

Original language	English
Pages (from-to)	39-43
Number of pages	5
Journal	Journal of Luminescence
Volume	138
Publication status	Published - 2013

All Science Journal Classification (ASJC) codes

Biophysics
Biochemistry
General Chemistry
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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title = "Effects induced by UV laser radiation on the blue luminescence of silica nanoparticles",

abstract = "The effects induced on the blue luminescence centered around 2.8 eV, characteristic of silica nanoparticles, were investigated by monitoring its intensity during and after exposure to the third and the fourth harmonic of a Nd:YAG pulsed laser. The luminescence trend is found to be dependent on the UV photon energy: 3.50 eV photons induce a partial bleaching followed by a recovery in the post-irradiation stage; 4.66 eV photons cause a total bleaching permanent after the irradiation. These results are interpreted as the conversion of luminescent defects towards stable and metastable configurations.",

author = "Simonpietro Agnello and Lavinia Vaccaro and Luisa Spallino and Marco Cannas",

year = "2013",

language = "English",

volume = "138",

pages = "39--43",

journal = "Journal of Luminescence",

issn = "0022-2313",

publisher = "Elsevier",

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TY - JOUR

T1 - Effects induced by UV laser radiation on the blue luminescence of silica nanoparticles

AU - Agnello, Simonpietro

AU - Vaccaro, Lavinia

AU - Spallino, Luisa

AU - Cannas, Marco

PY - 2013

Y1 - 2013

N2 - The effects induced on the blue luminescence centered around 2.8 eV, characteristic of silica nanoparticles, were investigated by monitoring its intensity during and after exposure to the third and the fourth harmonic of a Nd:YAG pulsed laser. The luminescence trend is found to be dependent on the UV photon energy: 3.50 eV photons induce a partial bleaching followed by a recovery in the post-irradiation stage; 4.66 eV photons cause a total bleaching permanent after the irradiation. These results are interpreted as the conversion of luminescent defects towards stable and metastable configurations.

AB - The effects induced on the blue luminescence centered around 2.8 eV, characteristic of silica nanoparticles, were investigated by monitoring its intensity during and after exposure to the third and the fourth harmonic of a Nd:YAG pulsed laser. The luminescence trend is found to be dependent on the UV photon energy: 3.50 eV photons induce a partial bleaching followed by a recovery in the post-irradiation stage; 4.66 eV photons cause a total bleaching permanent after the irradiation. These results are interpreted as the conversion of luminescent defects towards stable and metastable configurations.

UR - http://hdl.handle.net/10447/73516

M3 - Article

VL - 138

SP - 39

EP - 43

JO - Journal of Luminescence

JF - Journal of Luminescence

SN - 0022-2313

ER -

Effects induced by UV laser radiation on the blue luminescence of silica nanoparticles

Abstract

All Science Journal Classification (ASJC) codes

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