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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2023
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| Materias: | |
| Acceso en línea: | https://arxiv.org/abs/2310.06914 |
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| _version_ | 1866910644827062272 |
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| author | Witteck, Robert Geisz, John. F. Warren, Emily. L. McMahon, William. E. |
| author_facet | Witteck, Robert Geisz, John. F. Warren, Emily. L. McMahon, William. E. |
| contents | In this work, we investigate how a varying spectral irradiance and top cell bandgap affect the energy yield of 2T and 4T perovskite//silicon tandem solar cells under outdoor operating conditions. For the comparison, we first validate an optoelectronic model employing a 1-year outdoor data set for a 4T mechanical stacked GaAs on Silicon tandem device. We then use our verified model to simulate perovskite//silicon tandem devices with a varying perovskite top cell bandgap for a location in Golden, Colorado, USA. We introduce a spectral binning method to efficiently reduce and improve the visualization of the 1-min-resolved environmental data while maintaining the simulation accuracy. Our findings reveal that, for a device that is current-matched under standard testing conditions, the annual spectral deviation reduces the energy harvesting efficiency by only 2%$_\mathrm{rel}$. When additional realistic losses for the 4T are taken into account, 2T devices are shown to have an energy-harvesting efficiency that is at parity or higher. Deviations in the top cell bandgap of more than 0.1 eV from current matching result in a reduced energy-harvesting efficiency of more than 5%$_\mathrm{rel}$ for the 2T tandem device. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_06914 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Spectral effects on the energy harvesting efficiency of 2- and 4-terminal tandem photovoltaics Witteck, Robert Geisz, John. F. Warren, Emily. L. McMahon, William. E. Materials Science In this work, we investigate how a varying spectral irradiance and top cell bandgap affect the energy yield of 2T and 4T perovskite//silicon tandem solar cells under outdoor operating conditions. For the comparison, we first validate an optoelectronic model employing a 1-year outdoor data set for a 4T mechanical stacked GaAs on Silicon tandem device. We then use our verified model to simulate perovskite//silicon tandem devices with a varying perovskite top cell bandgap for a location in Golden, Colorado, USA. We introduce a spectral binning method to efficiently reduce and improve the visualization of the 1-min-resolved environmental data while maintaining the simulation accuracy. Our findings reveal that, for a device that is current-matched under standard testing conditions, the annual spectral deviation reduces the energy harvesting efficiency by only 2%$_\mathrm{rel}$. When additional realistic losses for the 4T are taken into account, 2T devices are shown to have an energy-harvesting efficiency that is at parity or higher. Deviations in the top cell bandgap of more than 0.1 eV from current matching result in a reduced energy-harvesting efficiency of more than 5%$_\mathrm{rel}$ for the 2T tandem device. |
| title | Spectral effects on the energy harvesting efficiency of 2- and 4-terminal tandem photovoltaics |
| topic | Materials Science |
| url | https://arxiv.org/abs/2310.06914 |