Enhanced Electric Field Minimizing Quasi-Fermi Level Splitting Deficit for High-Performance Tin-Lead Perovskite Solar Cells

© 2024 Wiley‐VCH GmbH.

Détails bibliographiques
Publié dans:Advanced materials (Deerfield Beach, Fla.). - 1998. - 36(2024), 48 vom: 12. Nov., Seite e2410298
Auteur principal: Cheng, Jiahui (Auteur)
Autres auteurs: Cao, Huijie, Zhang, Shuming, Shao, Jie, Yan, Wenjian, Peng, Cheng, Yue, Fang, Zhou, Zhongmin
Format: Article en ligne
Langue:English
Publié: 2024
Accès à la collection:Advanced materials (Deerfield Beach, Fla.)
Sujets:Journal Article electric field passivation quasi‐Fermi level splitting solar cells tin‐lead perovskite
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520 |a The quasi-Fermi level splitting (QFLS) deficit caused by the non-radiative recombination at the interface of perovskite/electron transport layer (ETL) can lead to severe open-circuit voltage (VOC) loss and thus decreases the efficiency of perovskite solar cells (PSCs), however, has received limited attention in inverted tin-lead PSCs. Herein, the strategy of constructing an extra-electric field is presented by introducing ferroelectric polymer dipoles (FPD)-β-poly(1,1-difluoroethylene)-to suppress the QFLS deficit. The directional polarization of FPD can enhance the built-in electric field (BEF) and thus promote the charge transfer at the perovskite/ETL interface, which effectively suppresses non-radiative recombination. Furthermore, the incorporation of FPD facilitates high-quality crystallization of perovskite and reduces the surface energetic disorder. Therefore, the QFLS deficit in the perovskite/ETL half-stacked device is reduced from 62 to 27 meV after incorporating FPD, and the optimized device achieves an efficiency of 23.44% with a high VOC of 0.88 V. Additionally, the addition of FPD increases the activation energy for ion migration, which can reduce the effect of ion migration on the long-term stability of the device. Consequently, the FPD-incorporated device retains 88% of the initial efficiency after 1100 h of continuous illumination at the maximum power point (MPP) 
650 4 |a Journal Article 
650 4 |a electric field 
650 4 |a passivation 
650 4 |a quasi‐Fermi level splitting 
650 4 |a solar cells 
650 4 |a tin‐lead perovskite 
700 1 |a Cao, Huijie  |e verfasserin  |4 aut 
700 1 |a Zhang, Shuming  |e verfasserin  |4 aut 
700 1 |a Shao, Jie  |e verfasserin  |4 aut 
700 1 |a Yan, Wenjian  |e verfasserin  |4 aut 
700 1 |a Peng, Cheng  |e verfasserin  |4 aut 
700 1 |a Yue, Fang  |e verfasserin  |4 aut 
700 1 |a Zhou, Zhongmin  |e verfasserin  |4 aut 
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773 1 8 |g volume:36  |g year:2024  |g number:48  |g day:12  |g month:11  |g pages:e2410298 
856 4 0 |u http://dx.doi.org/10.1002/adma.202410298  |3 Volltext 
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