Controlled suppression of the photoluminescence superlinear dependence on excitation density in quantum dots

Abstract

We have shown that it is possible to tune, up to complete suppression, the photoluminescence superlinear dependence on the excitation density in quantum dot samples at high temperatures by annealing treatments. The effect has been attributed to the reduction of the defectivity of the material induced by annealing. © 2012 Bietti and Sanguinetti.