Influence of a surface electric field on the line shape of the excitonic emission in GaAs
- 15 November 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 32 (10) , 6978-6981
- https://doi.org/10.1103/physrevb.32.6978
Abstract
We report luminescence experiments on excitons in a GaAs-AlGaAs heterostructure with an applied electric field perpendicular to the surface. In the absence of any surface electric field we observe a single emission line centered at the excitonic eigenenergy. With increasing electric field the line shape changes subsequently to a camel-back structure. We explain the field-induced change of the excitonic-emission line shape by absorption in the depletion layer due to field-ionized excitons.Keywords
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