The theory of excitonic quasimolecules (biexcitons) (formed of spatially separated electrons and holes) in a nanosystem that consists of semiconductor quantum dots synthesized in a borosilicate glass matrix is presented. It is shown that exciton quasimolecule formation is of a threshold character and is possible in nanosystem, if the spacing between the quantum dots surfaces is larger than a certain critical spacing. It was found that the binding energy of the singlet ground state of an exciton quasimolecule, consisting of two semiconductor quantum dots is a significant large values, larger than the binding energy of the biexciton in a semiconductor single crystal by almost two orders of magnitude.
Sergey I. Pokutnyi,
"Excitonic quasimolecules in nanosystems of quantum dots," Optical Engineering 56(9), 091603 (5 January 2017). https://doi.org/10.1117/1.OE.56.9.091603
. Submission: Received: 22 September 2016; Accepted: 29 November 2016
Received: 22 September 2016; Accepted: 29 November 2016; Published: 5 January 2017