INIFTA 05425
INSTITUTO DE INVESTIGACIONES FISICO-QUIMICAS TEORICAS Y APLICADAS
Unidad Ejecutora - UE
artículos
Título:
Silanization effect on the photoluminescence characteristics of crystalline and amorphous silicon nanoparticles.
Autor/es:
CAREGNATO, PAULA; DELLARCIPRETE MARÍA LAURA; GONZALEZ, MÓNICA C.
Revista:
Photochemical and Photobiological Sciences
Editorial:
ROYAL SOC CHEMISTRY
Referencias:
Lugar: CAMBRIDGE; Año: 2013 vol. 12 p. 1658 - 1665
ISSN:
1474-905X
Resumen:
Silicon nanoparticles synthesized by two different methods, were surface modified with 3-mercaptopropyltrimethoxysilane. The particles of ~ 2 nm size, exhibit photoluminescence (PL) in the UV-Vis range of the spectrum. The most intense PL band at 430 nm with an emission lifetime of 1-2 nsec, is attributed to the presence of the surface defects Si-O-Si, generated after anchoring the organic molecule to the interface. The excitation-emission matrix of this band is essentially independent of the technique of synthesis, crystalline structure, and size of the silicon nanoparticles.
