| Autor: |
VACCARO, Lavinia, CANGIALOSI, Chiara, SPALLINO, Luisa, CANNAS, Marco, GELARDI, Franco Mario, BOSCAINO, Roberto |
| Přispěvatelé: |
Vaccaro, L, Cangialosi, C, Spallino, L, Cannas, M, Gelardi, F. M., Boscaino, R |
| Jazyk: |
angličtina |
| Rok vydání: |
2014 |
| Předmět: |
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| Popis: |
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. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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