Effects of Plasma Interaction on a Random Array of Quantum Dots

We calculated optical absorption coefficients for linear and monolayer arrays of ionized quantum dots (QD) of spherical or cylindrical shape with random dimensions and occupation numbers, obtained by Monte Carlo simulation. When submitted to an oscillating electric field each ionized QD behaves as a dipole and the interaction of them changes the form of the light absorption. The effect of the many electron system is considered by Density Functional Theory. The results obtained show a shift of the absorption peak to the right for increasing densities of QD’s, whatever kind of shape or array of QD. Also absorption only, occurs when the electric field has a normal component to the array.