First synthesis of silicon nanocrystals in amorphous silicon nitride from a preceramic polymer.
Nanotechnology
; 30(25): 255601, 2019 Jun 21.
Article
em En
| MEDLINE
| ID: mdl-30836334
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.
Texto completo:
1
Base de dados:
MEDLINE
Idioma:
En
Revista:
Nanotechnology
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Itália