Photocurrent reversal induced by localized continuum resonances in asymmetric quantum semiconductor structures
- 8 November 1993
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 63 (19) , 2670-2672
- https://doi.org/10.1063/1.110415
Abstract
A new type of photoconductivity controlled by the wave function of the excited state is reported in suitably engineered asymmetric quantum wellheterostructuresgrown by molecular beam epitaxy. This phenomenon manifests itself in directional charge transfer against the applied electric field as electrons in the wells are photoexcited to resonances localized above the barriers.Keywords
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