Oxidation of silicon nanoparticles produced by ns laser ablation in liquids

Lavinia Vaccaro; Simonpietro Agnello; Marco Cannas; Franco Mario Gelardi; Roberto Boscaino; Gianpiero Buscarino; Fabrizio Messina; Pietro Camarda

Oxidation of silicon nanoparticles produced by ns laser ablation in liquids

Lavinia Vaccaro, Simonpietro Agnello, Marco Cannas, Franco Mario Gelardi, Roberto Boscaino, Gianpiero Buscarino, Fabrizio Messina, Pietro Camarda

Risultato della ricerca: Other

Abstract

The investigation of nanoparticles produced by ns pulsed Nd:YAG laser ablation of silicon in liquids is reported. Combined characterization by morphological and structural techniques shows that these nanoparticles have a mean diameter of ~3 nm and a core-shell structure consisting of a Si-nanocrystal surrounded by a layer of oxidized Si. Time resolved luminescence spectra evidence visible and UV emissions: a broad band around 1.9 eV originates from Si-nanocrystals, while two bands centered at 2.7 eV and 4.4 eV are associated with oxygen deficient centers in the SiO2 shell.

Lingua originale	English
Numero di pagine	2
Stato di pubblicazione	Published - 2014

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@conference{91b55260691d45f6b06141d34b88f900,

title = "Oxidation of silicon nanoparticles produced by ns laser ablation in liquids",

abstract = "The investigation of nanoparticles produced by ns pulsed Nd:YAG laser ablation of silicon in liquids is reported. Combined characterization by morphological and structural techniques shows that these nanoparticles have a mean diameter of ~3 nm and a core-shell structure consisting of a Si-nanocrystal surrounded by a layer of oxidized Si. Time resolved luminescence spectra evidence visible and UV emissions: a broad band around 1.9 eV originates from Si-nanocrystals, while two bands centered at 2.7 eV and 4.4 eV are associated with oxygen deficient centers in the SiO2 shell.",

keywords = "Si/SiO2 core-shell, laser ablation, nanoparticles, oxidation, time-resolved luminescence, Si/SiO2 core-shell, laser ablation, nanoparticles, oxidation, time-resolved luminescence",

author = "Lavinia Vaccaro and Simonpietro Agnello and Marco Cannas and Gelardi, {Franco Mario} and Roberto Boscaino and Gianpiero Buscarino and Fabrizio Messina and Pietro Camarda",

year = "2014",

language = "English",

}

TY - CONF

T1 - Oxidation of silicon nanoparticles produced by ns laser ablation in liquids

AU - Vaccaro, Lavinia

AU - Agnello, Simonpietro

AU - Cannas, Marco

AU - Gelardi, Franco Mario

AU - Boscaino, Roberto

AU - Buscarino, Gianpiero

AU - Messina, Fabrizio

AU - Camarda, Pietro

PY - 2014

Y1 - 2014

N2 - The investigation of nanoparticles produced by ns pulsed Nd:YAG laser ablation of silicon in liquids is reported. Combined characterization by morphological and structural techniques shows that these nanoparticles have a mean diameter of ~3 nm and a core-shell structure consisting of a Si-nanocrystal surrounded by a layer of oxidized Si. Time resolved luminescence spectra evidence visible and UV emissions: a broad band around 1.9 eV originates from Si-nanocrystals, while two bands centered at 2.7 eV and 4.4 eV are associated with oxygen deficient centers in the SiO2 shell.

AB - The investigation of nanoparticles produced by ns pulsed Nd:YAG laser ablation of silicon in liquids is reported. Combined characterization by morphological and structural techniques shows that these nanoparticles have a mean diameter of ~3 nm and a core-shell structure consisting of a Si-nanocrystal surrounded by a layer of oxidized Si. Time resolved luminescence spectra evidence visible and UV emissions: a broad band around 1.9 eV originates from Si-nanocrystals, while two bands centered at 2.7 eV and 4.4 eV are associated with oxygen deficient centers in the SiO2 shell.

KW - Si/SiO2 core-shell

KW - laser ablation

KW - nanoparticles

KW - oxidation

KW - time-resolved luminescence

KW - Si/SiO2 core-shell

KW - laser ablation

KW - nanoparticles

KW - oxidation

KW - time-resolved luminescence

UR - http://hdl.handle.net/10447/96328

M3 - Other

ER -