Many-particle effects in type II quantum dots
- 5 March 2001
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 78 (10) , 1418-1420
- https://doi.org/10.1063/1.1353818
Abstract
Many-particle effects are investigated in the photoluminescence of type II GaSb/GaAs quantum dots (QDs). With increasing excitation density, i.e., exciton occupation, the photoluminescence shows first a blueshift and then saturates developing a plateau region. The peculiar behavior is attributed to Coulomb charging and state filling of the localized holes to dominate the many-particle regime. A high temperature stability makes the GaSb/GaAs QDs suitable for room-temperature devices.Keywords
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