Photogeneration and Performance Optimization (PhPO): A New Algorithm to Improve the Performance of Vertical Epitaxial Hetero-Structure Architecture Laser Power Converters
The state of the art in the field of high-power laser transmission is dominated by the so called Vertical Epitaxial Hetero-Structure Architecture (VEHSA), which consists of monolithically stacking p/n cells connected by tunnel junctions. This configuration distributes the current between the cells a...
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| Format: | Article |
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IEEE
2023-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/10210019/ |
| _version_ | 1797743424832536576 |
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| author | Javier F. Lozano Natalia Seoane Enrique Comesana Florencia M. Almonacid Eduardo F. Fernandez Antonio Garcia-Loureiro |
| author_facet | Javier F. Lozano Natalia Seoane Enrique Comesana Florencia M. Almonacid Eduardo F. Fernandez Antonio Garcia-Loureiro |
| author_sort | Javier F. Lozano |
| collection | DOAJ |
| description | The state of the art in the field of high-power laser transmission is dominated by the so called Vertical Epitaxial Hetero-Structure Architecture (VEHSA), which consists of monolithically stacking p/n cells connected by tunnel junctions. This configuration distributes the current between the cells and reduces the losses due to Joule heating. Since assessing the performance of each individual cell is very challenging, the design and optimization of these devices relies on simple approximations based on the Beer-Lambert law, the exponential decay of light, and guessing from published data. The limitations of these approaches are i) the current of each cell may differ from the calculated photocurrent, producing a mismatch and limiting the overall current, ii) the design parameters cannot be individually evaluated, and iii) the loss of accuracy when applied to devices with light trapping mechanisms. In this work, we present a novel optimization methodology aimed to overcome these limitations, based on a meticulous device Technology Computer-Aided Design (TCAD) and an iterative optimization algorithm with two stages: Photogeneration and Performance Optimization (PhPO). The proposed procedure improves the performance of the current state-of-the-art VEHSA devices, allows the use of new semiconductors and makes the design more resilient to a wide range of operation conditions. |
| first_indexed | 2024-03-12T14:55:17Z |
| format | Article |
| id | doaj.art-136dd88f96bf4fe282164ca27a2efac2 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-03-12T14:55:17Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-136dd88f96bf4fe282164ca27a2efac22023-08-14T23:00:43ZengIEEEIEEE Access2169-35362023-01-0111843718437810.1109/ACCESS.2023.330252310210019Photogeneration and Performance Optimization (PhPO): A New Algorithm to Improve the Performance of Vertical Epitaxial Hetero-Structure Architecture Laser Power ConvertersJavier F. Lozano0https://orcid.org/0000-0003-0387-0055Natalia Seoane1https://orcid.org/0000-0003-0973-461XEnrique Comesana2https://orcid.org/0000-0001-8422-5394Florencia M. Almonacid3https://orcid.org/0000-0001-7352-2377Eduardo F. Fernandez4Antonio Garcia-Loureiro5https://orcid.org/0000-0003-0574-1513Departamento de Electrónica e Computación, Centro Singular de Investigación en Tecnoloxías Intelixentes (CiTiUS), University of Santiago de Compostela, Santiago de Compostela, SpainDepartamento de Electrónica e Computación, Centro Singular de Investigación en Tecnoloxías Intelixentes (CiTiUS), University of Santiago de Compostela, Santiago de Compostela, SpainEscola Politécnica Superior de Enxeñaría, Campus Terra, University of Santiago de Compostela, Lugo, SpainAdvances in Photovoltaic Technology (AdPVTech), CEACTEMA, University of Jaén, Jaén, SpainAdvances in Photovoltaic Technology (AdPVTech), CEACTEMA, University of Jaén, Jaén, SpainDepartamento de Electrónica e Computación, Centro Singular de Investigación en Tecnoloxías Intelixentes (CiTiUS), University of Santiago de Compostela, Santiago de Compostela, SpainThe state of the art in the field of high-power laser transmission is dominated by the so called Vertical Epitaxial Hetero-Structure Architecture (VEHSA), which consists of monolithically stacking p/n cells connected by tunnel junctions. This configuration distributes the current between the cells and reduces the losses due to Joule heating. Since assessing the performance of each individual cell is very challenging, the design and optimization of these devices relies on simple approximations based on the Beer-Lambert law, the exponential decay of light, and guessing from published data. The limitations of these approaches are i) the current of each cell may differ from the calculated photocurrent, producing a mismatch and limiting the overall current, ii) the design parameters cannot be individually evaluated, and iii) the loss of accuracy when applied to devices with light trapping mechanisms. In this work, we present a novel optimization methodology aimed to overcome these limitations, based on a meticulous device Technology Computer-Aided Design (TCAD) and an iterative optimization algorithm with two stages: Photogeneration and Performance Optimization (PhPO). The proposed procedure improves the performance of the current state-of-the-art VEHSA devices, allows the use of new semiconductors and makes the design more resilient to a wide range of operation conditions.https://ieeexplore.ieee.org/document/10210019/Device modelingnew algorithmlaser power convertersVEHSA architecturephoto-current optimizationmultijunction photovoltaic devices |
| spellingShingle | Javier F. Lozano Natalia Seoane Enrique Comesana Florencia M. Almonacid Eduardo F. Fernandez Antonio Garcia-Loureiro Photogeneration and Performance Optimization (PhPO): A New Algorithm to Improve the Performance of Vertical Epitaxial Hetero-Structure Architecture Laser Power Converters IEEE Access Device modeling new algorithm laser power converters VEHSA architecture photo-current optimization multijunction photovoltaic devices |
| title | Photogeneration and Performance Optimization (PhPO): A New Algorithm to Improve the Performance of Vertical Epitaxial Hetero-Structure Architecture Laser Power Converters |
| title_full | Photogeneration and Performance Optimization (PhPO): A New Algorithm to Improve the Performance of Vertical Epitaxial Hetero-Structure Architecture Laser Power Converters |
| title_fullStr | Photogeneration and Performance Optimization (PhPO): A New Algorithm to Improve the Performance of Vertical Epitaxial Hetero-Structure Architecture Laser Power Converters |
| title_full_unstemmed | Photogeneration and Performance Optimization (PhPO): A New Algorithm to Improve the Performance of Vertical Epitaxial Hetero-Structure Architecture Laser Power Converters |
| title_short | Photogeneration and Performance Optimization (PhPO): A New Algorithm to Improve the Performance of Vertical Epitaxial Hetero-Structure Architecture Laser Power Converters |
| title_sort | photogeneration and performance optimization phpo a new algorithm to improve the performance of vertical epitaxial hetero structure architecture laser power converters |
| topic | Device modeling new algorithm laser power converters VEHSA architecture photo-current optimization multijunction photovoltaic devices |
| url | https://ieeexplore.ieee.org/document/10210019/ |
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