Optical absorption evidence for quantum confinement effects in porous silicon

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, the optical absorption edge exhibits a strong inverse correlation that is in excellent agre...

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Bibliographic Details
Published in:Solid state communications 1994, Vol.89 (7), p.587-589
Main Authors: Lockwood, D.J., Wang, A., Bryskiewicz, B.
Format: Article
Language:English
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Summary: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, the 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 for quantum confinement effects in porous Si.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(94)90169-4