Grain Boundaries Contribute to the Performance of Perovskite Solar Cells by Promoting Charge Separations
Highlights Sub-micrometer-resolved photocurrent mapping in operational perovskite solar cells, achieved through our home-built photoluminescence and photocurrent imaging microscopy, reveals enhanced photocurrent at grain boundaries compared to grain interiors. Local pump-probe femtosecond transient...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-06-01
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| Series: | Nano-Micro Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s40820-025-01795-0 |
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| Summary: | Highlights Sub-micrometer-resolved photocurrent mapping in operational perovskite solar cells, achieved through our home-built photoluminescence and photocurrent imaging microscopy, reveals enhanced photocurrent at grain boundaries compared to grain interiors. Local pump-probe femtosecond transient absorption and Kelvin probe force microscopy measurements corroborate the presence of a built-in electric field in the vicinity of grain boundaries that promotes electron–hole separation and the subsequent charge collection, thereby contributing to the performance of perovskite solar cells. |
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| ISSN: | 2311-6706 2150-5551 |