Optical Absorption and Photoluminescence of Cylindrical Quantum Dot with Modified Pöschl-Teller and Morse Confining Potentials

The investigation of absorption spectra and photoluminescence of the cylindrical quantum dot with two models of confinement potentials, namely modified Pöschl-Teller and Morse, in axial direction have been considered in the regime of strong quantization. The interband optical transitions from heavy and light hole states to electron states have been observed for diagonal and off-diagonal transitions. Selection rules and oscillator strengths for these transitions have been obtained for different values of potentials parameters. The absorption spectra for above mentioned transitions have been plotted. At the same time, the photoluminescence spectra have been constructed depending on the incident light energy. The exciton radiative lifetime in the cylindrical quantum dot with different types of confinement potentials have been calculated.