Résumé
ZnO@mesoporous silica nanocomposite was prepared by the impregnation of a CMI-1 material in a Zn(NO) solution followed by calcination under O. Intensive characterization was carried out by N adsorption-desorption measurements, scanning and transmission electron microscopy. The optical properties of the ZnO@mesoporous silica nanocomposite were studied by photoluminescence spectroscopy. Quantum Size Effect was firstly demonstrated by subjecting the sample to a 254 nm excitation light, and was further confirmed by using a 680 nm excitation laser beam, which implies a two-photon absorption process. By focusing the 680 nm laser beam on different places in the sample, a very localized random laser effect, also induced by a two-photon absorption process, was detected.
langue originale | Anglais |
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Pages (de - à) | 1152-1156 |
Nombre de pages | 5 |
journal | Journal of non-crystalline solids |
Volume | 355 |
Numéro de publication | 18-21 |
Les DOIs | |
Etat de la publication | Publié - 1 juil. 2009 |
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Synthèse, Irradiation et Analyse de Matériaux (SIAM) (2016 - ...)
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