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25.71%-Efficiency FACsPbI3 Perovskite Solar Cells Enabled by A Thiourea-based Isomer.
- Source :
-
Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2024 Aug 14, pp. e202410378. Date of Electronic Publication: 2024 Aug 14. - Publication Year :
- 2024
- Publisher :
- Ahead of Print
-
Abstract
- Various isomers have been developed to regulate the morphology and reduce defects in state-of-the-art perovskite solar cells. To insight the structure-function-effect correlations for the isomerization of thiourea derivatives on the performance of the perovskite solar cells (PSCs), we developed two thiourea derivatives [(3,5-dichlorophenyl)amino]thiourea (AT) and N-(3,5-dichlorophenyl)hydrazinecarbothioamide (HB). Supported by experimental and calculated results, it was found that AT can bind with undercoordinated Pb2+ defect through synergistic interaction between N1 and C=S group with a defect formation energy of 1.818 eV, which is much higher than that from the synergistic interaction between two -NH- groups in HB and perovskite (1.015 eV). Moreover, the stronger interaction between AT and Pb2+ regulates the crystallization process of perovskite film to obtain a high-quality perovskite film with high crystallinity, large grain size, and low defect density. Consequently, the AT-treated FACsPbI3 device engenders an efficiency of 25.71% (certified as 24.66%), which is greatly higher than control (23.74%) and HB-treated FACsPbI3 devices (25.05%). The resultant device exhibits a remarkable stability for maintaining 91.0% and 95.2% of its initial efficiency after aging 2000 h in air condition or tracking at maximum power point for 1000 h, respectively.<br /> (© 2024 Wiley‐VCH GmbH.)
Details
- Language :
- English
- ISSN :
- 1521-3773
- Database :
- MEDLINE
- Journal :
- Angewandte Chemie (International ed. in English)
- Publication Type :
- Academic Journal
- Accession number :
- 39143026
- Full Text :
- https://doi.org/10.1002/anie.202410378