Carrier trapping in a quantum dash: optical signatures

Piotr Kaczmarkiewicz, Paweł Machnikowski, Tilmann Kuhn

Published 2012-07-25Version 1

We theoretically study the optical properties and the electronic structure of highly elongated quantum dots (quantum dashes) and show how geometrical fluctuations affect the excitonic spec- trum of the system. The dependence of the absorption intensities on the geometrical properties (depth and length) of the trapping center in a quantum dash is analyzed and the dependence of the degree of the linear polarization on these geometrical parameters is studied.