Determination of semiconductor quantum dot parameters by optical methods

Optical methods and their limitations are described that allow one to obtain the physical parameters of semiconductor nanocrystals (quantum dots) embedded in a glass matrix. The parameters determined are: average radius, confinement energy, band gap, number of atoms in an average-radius nanocrystal, hydrostatic pressure caused by a glass matrix, composition, acceptor energies, Coulomb energy, carriers' lifetime, absorption cross section, concentration of nanocrystals. CdSxSe1−xnanocrystals in KS-10, OS-12 and Corning 2-61 commercial glasses and CdSe nanocrystals in the experimental glass are investigated.