Dynamics of the in-plane charge separation front in a two-dimensional electron-hole gas
We show both experimentally and theoretically that the recently observed optically induced in-plane charge separation in quantum well (QW) structures and the exciton ring emission pattern at this charge separation boundary have an extremely long lifetime. The oppositely charged carriers remain separ...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
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2005
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| _version_ | 1797068121316524032 |
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| author | Chen, G Rapaport, R Simon, S Pfeiffer, L West, K |
| author_facet | Chen, G Rapaport, R Simon, S Pfeiffer, L West, K |
| author_sort | Chen, G |
| collection | OXFORD |
| description | We show both experimentally and theoretically that the recently observed optically induced in-plane charge separation in quantum well (QW) structures and the exciton ring emission pattern at this charge separation boundary have an extremely long lifetime. The oppositely charged carriers remain separated and provide a reservoir of excitons at their boundary with a persistent emission which lasts hundreds of microseconds (orders of magnitude longer than their recombination time) after the external excitation is removed. This long lifetime is due to an interplay between the slow in-plane carrier diffusion and slow carrier tunneling perpendicular to the QW plane. ©2005 The American Physical Society. |
| first_indexed | 2024-03-06T22:06:07Z |
| format | Journal article |
| id | oxford-uuid:5032edca-0d40-4599-be75-31f97d1c596e |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T22:06:07Z |
| publishDate | 2005 |
| record_format | dspace |
| spelling | oxford-uuid:5032edca-0d40-4599-be75-31f97d1c596e2022-03-26T16:12:12ZDynamics of the in-plane charge separation front in a two-dimensional electron-hole gasJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:5032edca-0d40-4599-be75-31f97d1c596eEnglishSymplectic Elements at Oxford2005Chen, GRapaport, RSimon, SPfeiffer, LWest, KWe show both experimentally and theoretically that the recently observed optically induced in-plane charge separation in quantum well (QW) structures and the exciton ring emission pattern at this charge separation boundary have an extremely long lifetime. The oppositely charged carriers remain separated and provide a reservoir of excitons at their boundary with a persistent emission which lasts hundreds of microseconds (orders of magnitude longer than their recombination time) after the external excitation is removed. This long lifetime is due to an interplay between the slow in-plane carrier diffusion and slow carrier tunneling perpendicular to the QW plane. ©2005 The American Physical Society. |
| spellingShingle | Chen, G Rapaport, R Simon, S Pfeiffer, L West, K Dynamics of the in-plane charge separation front in a two-dimensional electron-hole gas |
| title | Dynamics of the in-plane charge separation front in a two-dimensional electron-hole gas |
| title_full | Dynamics of the in-plane charge separation front in a two-dimensional electron-hole gas |
| title_fullStr | Dynamics of the in-plane charge separation front in a two-dimensional electron-hole gas |
| title_full_unstemmed | Dynamics of the in-plane charge separation front in a two-dimensional electron-hole gas |
| title_short | Dynamics of the in-plane charge separation front in a two-dimensional electron-hole gas |
| title_sort | dynamics of the in plane charge separation front in a two dimensional electron hole gas |
| work_keys_str_mv | AT cheng dynamicsoftheinplanechargeseparationfrontinatwodimensionalelectronholegas AT rapaportr dynamicsoftheinplanechargeseparationfrontinatwodimensionalelectronholegas AT simons dynamicsoftheinplanechargeseparationfrontinatwodimensionalelectronholegas AT pfeifferl dynamicsoftheinplanechargeseparationfrontinatwodimensionalelectronholegas AT westk dynamicsoftheinplanechargeseparationfrontinatwodimensionalelectronholegas |