Influence of crystallite size distribution on the micro-Raman analysis of porous Si

Citation
Mn. Islam et S. Kumar, Influence of crystallite size distribution on the micro-Raman analysis of porous Si, APPL PHYS L, 78(6), 2001, pp. 715-717
Citations number
24
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
0003-6951 → ACNP
Volume
78
Issue
6
Year of publication
2001
Pages
715 - 717
Database
ISI
SICI code
0003-6951(20010205)78:6<715:IOCSDO>2.0.ZU;2-#
Abstract
First-order Raman spectra from nanocrystalline semiconductors reflect the i nfluence of crystallite sizes on the Raman shifts and line shapes. A Gaussi an distribution in crystallite sizes is explicitly included to calculate th e Raman spectra of porous silicon. Several porous-silicon samples were prep ared using electrochemical anodization, and Raman as well as photoluminesce nce measurements were carried out on the same spots using a micro-Raman pro be. The size distribution obtained from fitting the Raman data using our pr ocedure is able to predict the photoluminescence accurately in the quantum- confinement models. (C) 2001 American Institute of Physics.