High-efficiency lead-free all-perovskite tandem solar cells achieving 28.22 % power conversion efficiency: A Cs2AgBi0.75Sb0.25Br6/FASnI3 heterostructure design
This research looks at how well an all-perovskite, lead-free tandem solar cell works. It has a wide-bandgap (1.8 eV) Cs2AgBi0.75Sb0.25Br6 top subcell and a narrow-bandgap (1.41 eV) FASnI3 bottom subcell. We show a very efficient device design by carefully adjusting the thicknesses of the absorber la...
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Elsevier
2025-12-01
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| Series: | Results in Optics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666950125001105 |
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| author | Sarowr Basm Almahsen Ghaleb Ali Al-Dahash |
| author_facet | Sarowr Basm Almahsen Ghaleb Ali Al-Dahash |
| author_sort | Sarowr Basm Almahsen |
| collection | DOAJ |
| description | This research looks at how well an all-perovskite, lead-free tandem solar cell works. It has a wide-bandgap (1.8 eV) Cs2AgBi0.75Sb0.25Br6 top subcell and a narrow-bandgap (1.41 eV) FASnI3 bottom subcell. We show a very efficient device design by carefully adjusting the thicknesses of the absorber layers (600 nm for the top cell and 500 nm for the bottom cell) and the charge transport layers (TiO2 as ETL and Cu2O as HTL). Numerical simulations using SCAPS-1D under AM1.5G light show that the best power conversion efficiency (PCE) achieved is 28.22 %, along with a very satisfactory fill factor (88.74 %), short-circuit current density (27.886 mA/cm2), and Open-circuit voltage (1.1402 V) at 300 K. The optimized structure (FTO/TiO2/Cs2AgBi0.75Sb0.25Br6/FASnI3/Cu2O) highlights the synergistic potential of these lead-free perovskites in tandem configurations. These results not only advance the development of environmentally friendly photovoltaics but also pave the way for scalable, high-performance tandem solar cells that rival their lead-based counterparts. |
| format | Article |
| id | doaj-art-9eda8d91e0534d1082738bf193dca1b3 |
| institution | Kabale University |
| issn | 2666-9501 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Optics |
| spelling | doaj-art-9eda8d91e0534d1082738bf193dca1b32025-08-20T03:41:57ZengElsevierResults in Optics2666-95012025-12-012110088210.1016/j.rio.2025.100882High-efficiency lead-free all-perovskite tandem solar cells achieving 28.22 % power conversion efficiency: A Cs2AgBi0.75Sb0.25Br6/FASnI3 heterostructure designSarowr Basm Almahsen0Ghaleb Ali Al-Dahash1Laser Physics Department, College of Science for Women, University of Babylon, Hilla, IraqCorresponding author.; Laser Physics Department, College of Science for Women, University of Babylon, Hilla, IraqThis research looks at how well an all-perovskite, lead-free tandem solar cell works. It has a wide-bandgap (1.8 eV) Cs2AgBi0.75Sb0.25Br6 top subcell and a narrow-bandgap (1.41 eV) FASnI3 bottom subcell. We show a very efficient device design by carefully adjusting the thicknesses of the absorber layers (600 nm for the top cell and 500 nm for the bottom cell) and the charge transport layers (TiO2 as ETL and Cu2O as HTL). Numerical simulations using SCAPS-1D under AM1.5G light show that the best power conversion efficiency (PCE) achieved is 28.22 %, along with a very satisfactory fill factor (88.74 %), short-circuit current density (27.886 mA/cm2), and Open-circuit voltage (1.1402 V) at 300 K. The optimized structure (FTO/TiO2/Cs2AgBi0.75Sb0.25Br6/FASnI3/Cu2O) highlights the synergistic potential of these lead-free perovskites in tandem configurations. These results not only advance the development of environmentally friendly photovoltaics but also pave the way for scalable, high-performance tandem solar cells that rival their lead-based counterparts.http://www.sciencedirect.com/science/article/pii/S2666950125001105Tandem solar cell architecturePerovskiteSimulationSCAPS-1DAntimony-doped Cs2AgBiBr6 |
| spellingShingle | Sarowr Basm Almahsen Ghaleb Ali Al-Dahash High-efficiency lead-free all-perovskite tandem solar cells achieving 28.22 % power conversion efficiency: A Cs2AgBi0.75Sb0.25Br6/FASnI3 heterostructure design Results in Optics Tandem solar cell architecture Perovskite Simulation SCAPS-1D Antimony-doped Cs2AgBiBr6 |
| title | High-efficiency lead-free all-perovskite tandem solar cells achieving 28.22 % power conversion efficiency: A Cs2AgBi0.75Sb0.25Br6/FASnI3 heterostructure design |
| title_full | High-efficiency lead-free all-perovskite tandem solar cells achieving 28.22 % power conversion efficiency: A Cs2AgBi0.75Sb0.25Br6/FASnI3 heterostructure design |
| title_fullStr | High-efficiency lead-free all-perovskite tandem solar cells achieving 28.22 % power conversion efficiency: A Cs2AgBi0.75Sb0.25Br6/FASnI3 heterostructure design |
| title_full_unstemmed | High-efficiency lead-free all-perovskite tandem solar cells achieving 28.22 % power conversion efficiency: A Cs2AgBi0.75Sb0.25Br6/FASnI3 heterostructure design |
| title_short | High-efficiency lead-free all-perovskite tandem solar cells achieving 28.22 % power conversion efficiency: A Cs2AgBi0.75Sb0.25Br6/FASnI3 heterostructure design |
| title_sort | high efficiency lead free all perovskite tandem solar cells achieving 28 22 power conversion efficiency a cs2agbi0 75sb0 25br6 fasni3 heterostructure design |
| topic | Tandem solar cell architecture Perovskite Simulation SCAPS-1D Antimony-doped Cs2AgBiBr6 |
| url | http://www.sciencedirect.com/science/article/pii/S2666950125001105 |
| work_keys_str_mv | AT sarowrbasmalmahsen highefficiencyleadfreeallperovskitetandemsolarcellsachieving2822powerconversionefficiencyacs2agbi075sb025br6fasni3heterostructuredesign AT ghalebalialdahash highefficiencyleadfreeallperovskitetandemsolarcellsachieving2822powerconversionefficiencyacs2agbi075sb025br6fasni3heterostructuredesign |