Optical Properties of CdS Nanostructures Crystallized in the Pores of Insulating Template
MOSCOW STATE UNIV (RUSSIA) DEPT OF PHYSICS
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The characteristic features of the luminescence spectra obtained at different polarization of the exciting light beam and time resolved luminescence spectra of CdS nanocrystals crystallized in 8-10 nm diameter hollow channels of a dielectric Al2O3 template have been explained in terms of exciton transitions in semiconductor dielectric quantum wires. In these structures the dielectric confinement effect leads to a considerable increase of the exciton binding energy - the Coulomb attraction between electron and hole is considembly enhanced as a result of the difference benveen the permittivities of the semiconductor and insulator.
- Electrooptical and Optoelectronic Devices
- Solid State Physics