Abstract
Confinement in nanostructures with (some of the) linear dimensions small compared to the exciton radius provides a possibility of enhancement of both the binding energy and the oscillator strength of excitons. Moreover in such structures the possibility arise of controlling the strength of Coulomb interaction, responsible for binding of electron and hole to the exciton, by combining materials for the structure with essentially different values of dielectric constants. Transformations of Wannier-Mott excitons which are dependent on both of these factors — confinement geometry and dielectric constants ratio —, their optical manifestations and similar trends in many body phenomena, including electron–hole liquid formation, will be discussed.
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