Phonon replicas of charged and neutral exciton complexes in single quantum dots
2010 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 82, no 20Article in journal (Refereed) Published
The longitudinal-optical (LO)-phonon coupling is experimentally examined by the optical decay of various charged and neutral exciton species in single quantum dots, and the related Huang-Rhys parameters are extracted. A positive trion exhibits significantly weaker LO-phonon replicas in the photoluminescence spectrum than the neutral and negatively charged species. Model computations show that the strength of the replicas is determined by the Coulomb interactions between electrons and holes, which modify the localization of the envelope wave functions and the net charge distribution.
Place, publisher, year, edition, pages
American Physical Society , 2010. Vol. 82, no 20
National CategoryEngineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-63146DOI: 10.1103/PhysRevB.82.205421ISI: 000284205500004OAI: oai:DiVA.org:liu-63146DiVA: diva2:376673
Original Publication: Daniel Dufåker, Fredrik Karlsson, V Dimastrodonato, L O Mereni, Bo Sernelius, Per-Olof Holtz and E Pelucchi, Phonon replicas of charged and neutral exciton complexes in single quantum dots, 2010, PHYSICAL REVIEW B, (82), 20, 205421. http://dx.doi.org/10.1103/PhysRevB.82.205421 Copyright: American Physical Society http://www.aps.org/2010-12-132010-12-132015-01-23Bibliographically approved