QUANTUM CONFINEMENT INDUCED PHOTOLUMINESCENCE IN POROUS SILICON

Authors
LOCKWOOD DJ WANG AG
Citation
Dj. Lockwood et Ag. Wang, QUANTUM CONFINEMENT INDUCED PHOTOLUMINESCENCE IN POROUS SILICON, Solid state communications, 94(11), 1995, pp. 905-909
Citations number
32
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
94
Issue
11
Year of publication
1995
Pages
905 - 909
Database
ISI
SICI code
0038-1098(1995)94:11<905:QCIPIP>2.0.ZU;2-G
Abstract
An investigation of the red photoluminescence (PL) in uniform layers o f porous silicon has revealed an inverse relationship between the PL p eak energy and the nanoparticle diameter that is in accord with a quan tum confinement mechanism. The PL energy lies below that of the optica l absorption gap in such samples and the theoretical predictions for q uantum dots. It appears that the light emission in porous Si is multip hoton assisted for even quite small nanoparticle sizes.