NANOSTRUCTURES IN A DIELECTRIC MATRIX

We review the electronic and optical properties of nanostructures embe dded in a dielectric matrix. In the introduction the effect of confine ment on the excitonic parameters, binding energy, electron-hole intera ction, oscillator strength is considered. The first part of the commun ication is devoted to the modification of Coulomb interaction by the d ielectric constant of the environment in thin films and nanocrystals. In the second part we describe the modification of the coupling with l ight when the size of the object is less than the wavelength of light.