Issue
EPL
Volume 86, Number 6, June 2009
Article Number 67011
Number of page(s) 6
Section Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties
DOI http://dx.doi.org/10.1209/0295-5075/86/67011
Published online 13 July 2009
EPL, 86 (2009) 67011
DOI: 10.1209/0295-5075/86/67011

Phonon influence on emission spectra of biexciton and exciton complexes in semiconductor quantum dots

T. O. Cheche

University of Bucharest, Faculty of Physics - Bucharest, Romania, EU and Research Center for Applied Sciences, Academia Sinica - Taipei, Taiwan

tiberiuscheche@yahoo.com

received 4 March 2009; accepted in final form 5 June 2009; published June 2009
published online 13 July 2009

Abstract
The effect of longitudinal optical (LO) phonon on the emission spectra of biexciton and exciton complexes in semiconductor quantum dots (QDs) is theoretically investigated. The predicted resonantly excited photoluminescence of linearly polarized light in cylindrical InAs/AlAs QD nanostructure is compared with the experimental results. The exciton and biexciton binding energies are computed and appearance of LO phonon replicas in the photoluminescence spectra of the nanostructure is discussed.

PACS
73.21.La - Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems: Quantum dots.
73.40.Kp - III-V semiconductor-to-semiconductor contacts, p-n junctions, and heterojunctions.
78.67.Hc - Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures: Quantum dots.

© EPLA 2009