Monolithic wide band gap perovskite/perovskite tandem solar cells with organic recombination layers
We demonstrate a monolithic tandem solar cell by sequentially depositing a higher-bandgap (2.3 eV) CH3NH3PbBr3subcell and a lower-bandgap (1.55 eV) CH3NH3PbI3subcell bandgap perovskite cells, in conjugation with a solution-processed organic charge carrier recombination layer, which serves to protect...
| Main Authors: | , , , , , , , , , , |
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| Formato: | Journal article |
| Publicado: |
American Chemical Society
2017
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| _version_ | 1826262966280912896 |
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| author | Sheng, R Hörantner, M Wang, Z Jiang, Y Zhang, W Agosti, A Huang, S Hao, X Ho-Baillie, A Green, M Snaith, H |
| author_facet | Sheng, R Hörantner, M Wang, Z Jiang, Y Zhang, W Agosti, A Huang, S Hao, X Ho-Baillie, A Green, M Snaith, H |
| author_sort | Sheng, R |
| collection | OXFORD |
| description | We demonstrate a monolithic tandem solar cell by sequentially depositing a higher-bandgap (2.3 eV) CH3NH3PbBr3subcell and a lower-bandgap (1.55 eV) CH3NH3PbI3subcell bandgap perovskite cells, in conjugation with a solution-processed organic charge carrier recombination layer, which serves to protect the underlying subcell and allows for voltage addition of the two subcells. Owing to the low-loss series connection, we achieve a large open-circuit voltage of 1.96 V. Through optical and electronic modeling, we estimate the feasible efficiency of this device architecture to be 25.9%, achievable with integrating a best-in-class CH3NH3PbI3sub cell and a 2.05 eV wide bandgap perovskite cell with an optimized optical structure. Compared to previous reported all-perovskite tandem cells, we solely employ Pb-based perovskites, which although have wider band gap than Sn based perovskites, are not at risk of instability due to the unstable charge state of the Sn2+ion. Additionally, the bandgap combination we use in this study could be an advantage for triple junction cells on top of silicon. Our findings indicate that wide band gap all-perovskite tandems could be a feasible device structure for higher efficiency perovskite thin-film solar cells. |
| first_indexed | 2024-03-06T19:44:11Z |
| format | Journal article |
| id | oxford-uuid:21b56407-8dd9-4ebb-a711-b4d7f57e87ae |
| institution | University of Oxford |
| last_indexed | 2024-03-06T19:44:11Z |
| publishDate | 2017 |
| publisher | American Chemical Society |
| record_format | dspace |
| spelling | oxford-uuid:21b56407-8dd9-4ebb-a711-b4d7f57e87ae2022-03-26T11:34:52ZMonolithic wide band gap perovskite/perovskite tandem solar cells with organic recombination layersJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:21b56407-8dd9-4ebb-a711-b4d7f57e87aeSymplectic Elements at OxfordAmerican Chemical Society2017Sheng, RHörantner, MWang, ZJiang, YZhang, WAgosti, AHuang, SHao, XHo-Baillie, AGreen, MSnaith, HWe demonstrate a monolithic tandem solar cell by sequentially depositing a higher-bandgap (2.3 eV) CH3NH3PbBr3subcell and a lower-bandgap (1.55 eV) CH3NH3PbI3subcell bandgap perovskite cells, in conjugation with a solution-processed organic charge carrier recombination layer, which serves to protect the underlying subcell and allows for voltage addition of the two subcells. Owing to the low-loss series connection, we achieve a large open-circuit voltage of 1.96 V. Through optical and electronic modeling, we estimate the feasible efficiency of this device architecture to be 25.9%, achievable with integrating a best-in-class CH3NH3PbI3sub cell and a 2.05 eV wide bandgap perovskite cell with an optimized optical structure. Compared to previous reported all-perovskite tandem cells, we solely employ Pb-based perovskites, which although have wider band gap than Sn based perovskites, are not at risk of instability due to the unstable charge state of the Sn2+ion. Additionally, the bandgap combination we use in this study could be an advantage for triple junction cells on top of silicon. Our findings indicate that wide band gap all-perovskite tandems could be a feasible device structure for higher efficiency perovskite thin-film solar cells. |
| spellingShingle | Sheng, R Hörantner, M Wang, Z Jiang, Y Zhang, W Agosti, A Huang, S Hao, X Ho-Baillie, A Green, M Snaith, H Monolithic wide band gap perovskite/perovskite tandem solar cells with organic recombination layers |
| title | Monolithic wide band gap perovskite/perovskite tandem solar cells with organic recombination layers |
| title_full | Monolithic wide band gap perovskite/perovskite tandem solar cells with organic recombination layers |
| title_fullStr | Monolithic wide band gap perovskite/perovskite tandem solar cells with organic recombination layers |
| title_full_unstemmed | Monolithic wide band gap perovskite/perovskite tandem solar cells with organic recombination layers |
| title_short | Monolithic wide band gap perovskite/perovskite tandem solar cells with organic recombination layers |
| title_sort | monolithic wide band gap perovskite perovskite tandem solar cells with organic recombination layers |
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