Absorption and photoluminescence spectroscopy on a single self-assembled charge-tunable quantum dot
We have performed detailed photoluminescence (PL) and absorption spectroscopy on the same single self-assembled quantum dot in a charge-tunable device. The transition from neutral to charged exciton in the PL occurs at a more negative voltage than the corresponding transition in absorption. We have...
| Main Authors: | , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2005
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| _version_ | 1797084998802604032 |
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| author | Seidl, S Kroner, M Dalgarno, P Hogele, A Smith, J Ediger, M Gerardot, B Garcia, J Petroff, P Karrai, K Warburton, R |
| author_facet | Seidl, S Kroner, M Dalgarno, P Hogele, A Smith, J Ediger, M Gerardot, B Garcia, J Petroff, P Karrai, K Warburton, R |
| author_sort | Seidl, S |
| collection | OXFORD |
| description | We have performed detailed photoluminescence (PL) and absorption spectroscopy on the same single self-assembled quantum dot in a charge-tunable device. The transition from neutral to charged exciton in the PL occurs at a more negative voltage than the corresponding transition in absorption. We have developed a model of the Coulomb blockade to account for this observation. At large negative bias, the absorption broadens as a result of electron and hole tunneling. We observe resonant features in this regime whenever the quantum dot hole level is resonant with two-dimensional hole states located at the capping layer-blocking barrier interface in our structure. © 2005 The American Physical Society. |
| first_indexed | 2024-03-07T02:03:00Z |
| format | Journal article |
| id | oxford-uuid:9dfff8c4-a34e-4f43-9558-f87c2eb0d7ec |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:03:00Z |
| publishDate | 2005 |
| record_format | dspace |
| spelling | oxford-uuid:9dfff8c4-a34e-4f43-9558-f87c2eb0d7ec2022-03-27T00:47:05ZAbsorption and photoluminescence spectroscopy on a single self-assembled charge-tunable quantum dotJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:9dfff8c4-a34e-4f43-9558-f87c2eb0d7ecEnglishSymplectic Elements at Oxford2005Seidl, SKroner, MDalgarno, PHogele, ASmith, JEdiger, MGerardot, BGarcia, JPetroff, PKarrai, KWarburton, RWe have performed detailed photoluminescence (PL) and absorption spectroscopy on the same single self-assembled quantum dot in a charge-tunable device. The transition from neutral to charged exciton in the PL occurs at a more negative voltage than the corresponding transition in absorption. We have developed a model of the Coulomb blockade to account for this observation. At large negative bias, the absorption broadens as a result of electron and hole tunneling. We observe resonant features in this regime whenever the quantum dot hole level is resonant with two-dimensional hole states located at the capping layer-blocking barrier interface in our structure. © 2005 The American Physical Society. |
| spellingShingle | Seidl, S Kroner, M Dalgarno, P Hogele, A Smith, J Ediger, M Gerardot, B Garcia, J Petroff, P Karrai, K Warburton, R Absorption and photoluminescence spectroscopy on a single self-assembled charge-tunable quantum dot |
| title | Absorption and photoluminescence spectroscopy on a single self-assembled charge-tunable quantum dot |
| title_full | Absorption and photoluminescence spectroscopy on a single self-assembled charge-tunable quantum dot |
| title_fullStr | Absorption and photoluminescence spectroscopy on a single self-assembled charge-tunable quantum dot |
| title_full_unstemmed | Absorption and photoluminescence spectroscopy on a single self-assembled charge-tunable quantum dot |
| title_short | Absorption and photoluminescence spectroscopy on a single self-assembled charge-tunable quantum dot |
| title_sort | absorption and photoluminescence spectroscopy on a single self assembled charge tunable quantum dot |
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