Charged excitons in modulation-doped quantum wires

We report on the observation of negatively- and positively-charged excitons in the photoluminescence spectra of V-groove quantum wires. The. charged exciton binding energy increases with the strength of the quantum confinement. We demonstrate that fluctuations of the confinement potential cause the localization of the exciton and of the charged exitons on the same location. We discover that a large fraction of the enhancement of the charged exciton "binding energies" has a kinetic origin associated with the recoil energy transferred to the remaining carrier during the emission process.


Scientific editor(s):
Menéndez, José
Van de Walle, Chris G.
Presented at:
27th International Conference on the Physics of Semiconductors (ICPS-27), Flagstaff, AZ, Jul 26-30, 2004
Year:
2005
Publisher:
Melville, NY, American Institute of Physics
Keywords:
Laboratories:




 Record created 2010-03-26, last modified 2018-05-12


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