Distribution of CdSe nanoparticles synthesized in porous Si[O.sub.x] matrix

Photoluminescence spectra of CdSe nanoparticles synthesized by the chemical method from an aqueous solution are studied in relation to nanoparticle location over depth in the porous Si[O.sub.x] layer consisting of a set of distinct Si[O.sub.x] columns ~(10-100) nm in diameter. An analysis of radiative characteristics of this structure shows that the distributions of different-size nanoparticle fractions over the nanocomposite layer depth are different. A model explaining the cause of such distributions is considered. Within this model the parameter defining the "constrained geometry" notion for the used conditions of CdSe nanoparticles' growth in the Si[O.sub.x] matrix is estimated. DOI: 10.1134/S1063782611090028