Interband Optical Transition Energy And Oscillator Strength In A Lead Based CdSe Quantum Dot QuantumWell Heterostructure

摘要

Binding energies of the exciton and the interband optical transition energies are studied in a CdSe/ Pb_(1-x)Cd_xSe/CdSe spherical quantum dot-quantum well nanostructure taking into account the geometrical confinement effect. The core and shell are taken as the same material. The initial and final states of energy and the overlap integrals of electron and hole wave functions are determined by the oscillator strength. The oscillator strength and the radiative transition life time with the dot radius are investigated for various Cd alloy content in the core and shell materials.