We apply the method of random matrices to a calculation of the optical properties of porous silicon and silicon nanopowders, analyzing the effects of disorder on the visible luminescence properties. The maximum of the luminescence peal; displays a blueshift, which adds up to the effects induced by other mechanisms, such as quantum confinement or surface passivation, and agrees with the experimental findings, The long-wavelength luminescence edge, instead, is redshifted by the presence of disorder, thus partially compensating for the gap-opening effect induced by the other mechanisms.

Akulin, V.M., Borsella, E., Onida, G., Pulci, O., & Sarfati, A. (1998). Optical spectra of silicon nanostructures from the random-matrix model. PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, 57(11), 6514-6518 [10.1103/PhysRevB.57.6514].

Optical spectra of silicon nanostructures from the random-matrix model

ONIDA, GIOVANNI;PULCI, OLIVIA;
1998

Abstract

We apply the method of random matrices to a calculation of the optical properties of porous silicon and silicon nanopowders, analyzing the effects of disorder on the visible luminescence properties. The maximum of the luminescence peal; displays a blueshift, which adds up to the effects induced by other mechanisms, such as quantum confinement or surface passivation, and agrees with the experimental findings, The long-wavelength luminescence edge, instead, is redshifted by the presence of disorder, thus partially compensating for the gap-opening effect induced by the other mechanisms.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/03 - Fisica della Materia
English
Akulin, V.M., Borsella, E., Onida, G., Pulci, O., & Sarfati, A. (1998). Optical spectra of silicon nanostructures from the random-matrix model. PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, 57(11), 6514-6518 [10.1103/PhysRevB.57.6514].
Akulin, V; Borsella, E; Onida, G; Pulci, O; Sarfati, A
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/174423
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