ORIGIN OF VISIBLE PHOTOLUMINESCENCE FROM POROUS SILICON AS STUDIED BYRAMAN-SPECTROSCOPY

Authors
ROY A JAYARAM K SOOD AK
Citation
A. Roy et al., ORIGIN OF VISIBLE PHOTOLUMINESCENCE FROM POROUS SILICON AS STUDIED BYRAMAN-SPECTROSCOPY, Bulletin of Materials Science, 17(5), 1994, pp. 513-522
Citations number
29
Categorie Soggetti
Material Science
Journal title
Bulletin of Materials Science → ACNP
ISSN journal
02504707
Volume
17
Issue
5
Year of publication
1994
Pages
513 - 522
Database
ISI
SICI code
0250-4707(1994)17:5<513:OOVPFP>2.0.ZU;2-V
Abstract
In this paper we discuss the different models proposed to explain the visible luminescence in porous silicon (PS). We review our recent phot oluminescence and Raman studies on PS as a function of different prepa ration conditions and isochronal thermal annealing. Our results can be explained by a hybrid model which incorporates both nanostructures fo r quantum confinement and silicon complexes (such as SiHx, and siloxen e) and defects at Si/SiO2, interfaces as luminescent centres.