Abstract
We have investigated the polarization dependence of the emission spectra of p-shell multiexcitons of a quantum dot when the single particle level spacing is larger than the characteristic energy of the Coulomb interactions. We find that there are many degenerate multiexciton states. The emission intensities depend on the number of degenerate initial and final states of the optical transitions. However, unlike the transition energies, they are essentially independent of the strength of the Coulomb interactions. In the presence of electron-hole symmetry the independence is exact.
Original language | English |
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Pages (from-to) | 176-181 |
Number of pages | 6 |
Journal | Solid State Communications |
Volume | 143 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2007 Jul |
Bibliographical note
Funding Information:This work was supported by grant No. R01-2005-000-10352-0 from the Basic Research Program of the Korea Science and Engineering Foundation, by Quantum Functional Semiconductor Research Center (QSRC) at Dongguk University of the Korea Science and Engineering Foundation and by Pure Basic Research Group project of Korea Research Foundation under Grant No. C00054. This work was supported by The Second Brain 21 Project.
Keywords
- A. Self-assembled quantum dots
- D. Polarization dependence
- E. Emission spectra of multiexcitons
ASJC Scopus subject areas
- General Chemistry
- Condensed Matter Physics
- Materials Chemistry