Chelating agent-based defect passivation for enhanced indoor performance of wide-bandgap perovskite solar cells
The fabrication of wide-bandgap (WBG) perovskite solar cells (PeSCs) often requires intense mixing of different halide ions, which can lead to higher defect densities in both the bulk and surfaces of the perovskite layers. In this work, efficient WBG PeSCs are developed through defect passivation us...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2025-06-01
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| Series: | APL Energy |
| Online Access: | http://dx.doi.org/10.1063/5.0260714 |
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| Summary: | The fabrication of wide-bandgap (WBG) perovskite solar cells (PeSCs) often requires intense mixing of different halide ions, which can lead to higher defect densities in both the bulk and surfaces of the perovskite layers. In this work, efficient WBG PeSCs are developed through defect passivation using chelating materials containing phosphorus–oxygen (P = O) bonds. These chelating agents are introduced into the anti-solvents during device fabrication to effectively passivate the surface of the perovskite films. The results demonstrate that appropriate treatments with chelating agents significantly enhance both the efficiency and stability of the PeSCs. Among the tested materials, 2,8-bis(diphenyl-phosphoryl)-dibenzo[b,d]furan (PPF) shows superior performance, attributed to its effective passivation capabilities and improved charge transport properties. Notably, PeSCs treated with PPF passivation achieve a power conversion efficiency (PCE) of 12.76% under standard one-sun illumination and an impressive PCE of 38.70% under indoor light at 2000 lux. This study introduces a promising passivation strategy for the development of high-performance WBG perovskite photovoltaic devices. |
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| ISSN: | 2770-9000 |