OPTICAL-ABSORPTION EVIDENCE FOR QUANTUM CONFINEMENT EFFECTS IN POROUSSILICON

Authors
LOCKWOOD DJ WANG A BRYSKIEWICZ B
Citation
Dj. Lockwood et al., OPTICAL-ABSORPTION EVIDENCE FOR QUANTUM CONFINEMENT EFFECTS IN POROUSSILICON, Solid state communications, 89(7), 1994, pp. 587-589
Citations number
26
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
89
Issue
7
Year of publication
1994
Pages
587 - 589
Database
ISI
SICI code
0038-1098(1994)89:7<587:OEFQCE>2.0.ZU;2-W
Abstract
Measurements of the optical and structural characteristics of various porous Si samples have been correlated. Although the photoluminescence peak wavelength shows no correlation with the Si nanoparticle size, t he optical absorption edge exhibits a strong inverse correlation that is in excellent agreement with theoretical predictions for the optical gap in Si spheres or quantum dots. This constitutes direct evidence f or quantum confinement effects in porous Si.