A large amount of work world-wide has been directed towards obtaining an understanding
of the fundamental characteristics of porous Si. Much progress has been made following the …

The striking photoluminescence properties of porous silicon have attracted considerable
research interest since their discovery in 1990. Luminescence is due to excitonic …

The luminescence in the visible range of porous silicon is analyzed in the hypothesis of
quantum confinement. We calculate the electronic and optical properties of silicon …

This book presents an overview of the current understanding of the physics of zero-
dimensional semiconductors. It concentrates mainly on quantum dots of wide-gap …

The dynamics and spectroscopy of silicon nanocrystals that emit at visible wavelengths were
analyzed. Size-selective precipitation and size-exclusion chromatography cleanly separate …

The oxidation of hydrogen-terminated porous silicon surfaces produced by electrochemical
etching has been studied using transmission FTIR spectroscopy. The surface is passivated …

A variety of silicon-based nanostructures with dimensions in the 1–5 nm range now emit
tunable photoluminescence (PL) spanning the visible range. Achievement of high …

A unified model of phonon-assisted and zero-phonon radiative transitions in nanoscale
silicon structures is presented. For characteristic sizes above 15–20 Å, phonon-assisted …

The electronic structure of nanocrystalline Si which shows visible photoluminescence is
calculated using the density-functional approach for finite structures. Except for geometry …

We have calculated the electronic structure of spherical silicon crystallites containing up to
2058 Si atoms. We predict a variation of the optical band gap with respect to the size of the …