 |
Article dans une revue
First synthesis of silicon nanocrystals in amorphous silicon nitride from a preceramic polymer
Abstract : We report the first synthesis of silicon nanocrystals embedded in a silicon nitride matrix through a direct pyrolysis of a preceramic polymer (perhydropolysilazane). Structural analysis carried out by XRD, XPS, Raman and TEM reveals the formation of silicon quantum dots and correlates the microstructures with the annealing temperature. The photoluminescence of the nanocomposites was investigated by both linear and nonlinear measurements. Furthermore we demonstrate an enhanced chemical resistance of the nitride matrix, compared to the typical oxide one, in both strongly acidic and basic environments. The proposed synthesis via polymer pyrolysis is a striking innovation potentially allowing a mass-scale production nitride embedded Si nanocrystals.
https://hal-unilim.archives-ouvertes.fr/hal-02389019
Contributeur : Beatrice Derory <>
Soumis le : samedi 12 décembre 2020 - 09:33:38
Dernière modification le : mercredi 19 mai 2021 - 16:52:03
Archivage à long terme le : : samedi 13 mars 2021 - 18:20:42
Contributeur : Beatrice Derory <>
Soumis le : samedi 12 décembre 2020 - 09:33:38
Dernière modification le : mercredi 19 mai 2021 - 16:52:03
Archivage à long terme le : : samedi 13 mars 2021 - 18:20:42
Fichier
Nanotech2019_VersionHAL.pdf
Fichiers produits par l'(les) auteur(s)
