A metallic hot-carrier photovoltaic device
Hot carrier solar cells overcome the fundamental limitations of conventional devices where charge carriers are photogenerated over a broad energy spectrum but rapidly lose energy to the lattice and are extracted at the lowest energy of the system. In a hot carrier photovoltaic cell, carriers are ext...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
IOP Publishing
2019
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| _version_ | 1797051191769694208 |
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| author | Dimmock, J Kauer, M Wu, J Huiyun, L Stavrinou, P Ekins-Daukes, N |
| author_facet | Dimmock, J Kauer, M Wu, J Huiyun, L Stavrinou, P Ekins-Daukes, N |
| author_sort | Dimmock, J |
| collection | OXFORD |
| description | Hot carrier solar cells overcome the fundamental limitations of conventional devices where charge carriers are photogenerated over a broad energy spectrum but rapidly lose energy to the lattice and are extracted at the lowest energy of the system. In a hot carrier photovoltaic cell, carriers are extracted at higher energies than the absorption threshold, and extraction proceeds sufficiently quickly to avoid dissipative energy loss. We demonstrate a new hot carrier photovoltaic device where a broad spectrum of light is absorbed in metallic layers tens of nanometers thick. Using a semiconductor quantum well resonant tunnel structure we demonstrate energy selective hot carrier extraction from the metal film and show a unique hot carrier signature in the device IV characteristics. Using a multiple beam experiment, we further prove that these carriers arise from a hot electron population rather than via internal photoemission; a necessary requirement for high efficiency photovoltaic operation. |
| first_indexed | 2024-03-06T18:16:25Z |
| format | Journal article |
| id | oxford-uuid:04c5f65d-97ff-4806-b261-77e832ea9dd3 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:16:25Z |
| publishDate | 2019 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | oxford-uuid:04c5f65d-97ff-4806-b261-77e832ea9dd32022-03-26T08:53:33ZA metallic hot-carrier photovoltaic deviceJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:04c5f65d-97ff-4806-b261-77e832ea9dd3EnglishSymplectic Elements at OxfordIOP Publishing2019Dimmock, JKauer, MWu, JHuiyun, LStavrinou, PEkins-Daukes, NHot carrier solar cells overcome the fundamental limitations of conventional devices where charge carriers are photogenerated over a broad energy spectrum but rapidly lose energy to the lattice and are extracted at the lowest energy of the system. In a hot carrier photovoltaic cell, carriers are extracted at higher energies than the absorption threshold, and extraction proceeds sufficiently quickly to avoid dissipative energy loss. We demonstrate a new hot carrier photovoltaic device where a broad spectrum of light is absorbed in metallic layers tens of nanometers thick. Using a semiconductor quantum well resonant tunnel structure we demonstrate energy selective hot carrier extraction from the metal film and show a unique hot carrier signature in the device IV characteristics. Using a multiple beam experiment, we further prove that these carriers arise from a hot electron population rather than via internal photoemission; a necessary requirement for high efficiency photovoltaic operation. |
| spellingShingle | Dimmock, J Kauer, M Wu, J Huiyun, L Stavrinou, P Ekins-Daukes, N A metallic hot-carrier photovoltaic device |
| title | A metallic hot-carrier photovoltaic device |
| title_full | A metallic hot-carrier photovoltaic device |
| title_fullStr | A metallic hot-carrier photovoltaic device |
| title_full_unstemmed | A metallic hot-carrier photovoltaic device |
| title_short | A metallic hot-carrier photovoltaic device |
| title_sort | metallic hot carrier photovoltaic device |
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