Optically-Pumped Lasing in Hybrid Organic-Inorganic Light-Emitting Diodes
Here, the use of metal oxide layers both for charge transport and injection into an emissive semiconducting polymer and also for the control of the in-plane waveguided optical modes in light-emitting diodes (LEDs) is reported. The high refractive index of zinc oxide is used to confine these modes aw...
| Автори: | , , , , |
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| Формат: | Journal article |
| Мова: | English |
| Опубліковано: |
2009
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| _version_ | 1826303276669206528 |
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| author | Song, M Kabra, D Wenger, B Friend, R Snaith, H |
| author_facet | Song, M Kabra, D Wenger, B Friend, R Snaith, H |
| author_sort | Song, M |
| collection | OXFORD |
| description | Here, the use of metal oxide layers both for charge transport and injection into an emissive semiconducting polymer and also for the control of the in-plane waveguided optical modes in light-emitting diodes (LEDs) is reported. The high refractive index of zinc oxide is used to confine these modes away from the absorbing electrodes, and include a nano-imprinted grating in the polymer layer to introduce distributed feedback and enhance optical out-coupling. These structures show a large increase in the luminescence efficiency over conventional devices, with photoluminescence efficiency increased by up to 45%. Furthermore, optically-pumped lasing in hybrid oxide polymer LEDs is demonstrated. A tuneable lasing emission is also obtained in a single device structure by employing a graduated thickness of a zinc oxide inter-layer. This demonstrates the scope for using such architectures to improve the external efficiency of organic semiconductor LEDs, and opens new possibilities for the realization of polymer injection lasers. ©2009 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim. |
| first_indexed | 2024-03-07T06:00:12Z |
| format | Journal article |
| id | oxford-uuid:ebea41ef-6c27-48db-b64f-4a991ef214f4 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:00:12Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | oxford-uuid:ebea41ef-6c27-48db-b64f-4a991ef214f42022-03-27T11:13:33ZOptically-Pumped Lasing in Hybrid Organic-Inorganic Light-Emitting DiodesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:ebea41ef-6c27-48db-b64f-4a991ef214f4EnglishSymplectic Elements at Oxford2009Song, MKabra, DWenger, BFriend, RSnaith, HHere, the use of metal oxide layers both for charge transport and injection into an emissive semiconducting polymer and also for the control of the in-plane waveguided optical modes in light-emitting diodes (LEDs) is reported. The high refractive index of zinc oxide is used to confine these modes away from the absorbing electrodes, and include a nano-imprinted grating in the polymer layer to introduce distributed feedback and enhance optical out-coupling. These structures show a large increase in the luminescence efficiency over conventional devices, with photoluminescence efficiency increased by up to 45%. Furthermore, optically-pumped lasing in hybrid oxide polymer LEDs is demonstrated. A tuneable lasing emission is also obtained in a single device structure by employing a graduated thickness of a zinc oxide inter-layer. This demonstrates the scope for using such architectures to improve the external efficiency of organic semiconductor LEDs, and opens new possibilities for the realization of polymer injection lasers. ©2009 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim. |
| spellingShingle | Song, M Kabra, D Wenger, B Friend, R Snaith, H Optically-Pumped Lasing in Hybrid Organic-Inorganic Light-Emitting Diodes |
| title | Optically-Pumped Lasing in Hybrid Organic-Inorganic Light-Emitting Diodes |
| title_full | Optically-Pumped Lasing in Hybrid Organic-Inorganic Light-Emitting Diodes |
| title_fullStr | Optically-Pumped Lasing in Hybrid Organic-Inorganic Light-Emitting Diodes |
| title_full_unstemmed | Optically-Pumped Lasing in Hybrid Organic-Inorganic Light-Emitting Diodes |
| title_short | Optically-Pumped Lasing in Hybrid Organic-Inorganic Light-Emitting Diodes |
| title_sort | optically pumped lasing in hybrid organic inorganic light emitting diodes |
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