Tailoring passivators for highly efficient and stable perovskite solar cells

Nature Reviews Chemistry, Год журнала: 2023, Номер 7(9), С. 632 - 652

Опубликована: Июль 18, 2023

Язык: Английский

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25.24%‐Efficiency FACsPbI₃ Perovskite Solar Cells Enabled by Intermolecular Esterification Reaction of DL‐Carnitine Hydrochloride

Advanced Materials, Год журнала: 2023, Номер 35(16)

Опубликована: Фев. 2, 2023

Judicious tailoring of the interface between SnO2 electron-transport layer and perovskite buried surface plays a pivotal role in obtaining highly efficient stable solar cells (PSCs). Herein, DL-carnitine hydrochloride (DL) is incorporated into perovskite/SnO2 to suppress defect-states density. A DL-dimer obtained at by an intermolecular esterification reaction. For film, Cl- can passivate oxygen vacancies (VO ) through electrostatic coupling, while N coordinate with Sn4+ Sn-related defects. FA+ defects via hydrogen bonding Pb-related more efficiently than DL monomer. Upon modification, interfacial are effectively passivated quality resultant film improved. As result, DL-treated device achieves gratifying open-circuit voltage (VOC 1.20 V champion power conversion efficiency (PCE) 25.24%, which record value among all reported FACsPbI3 PSCs date. In addition, unencapsulated devices exhibit charming stability, sustaining 99.20% 90.00% their initial PCEs after aging air for 1200 h continuously operating maximum point tracking 500 h, respectively.

Язык: Английский

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Crystallization manipulation and holistic defect passivation toward stable and efficient inverted perovskite solar cells

Energy & Environmental Science, Год журнала: 2023, Номер 16(9), С. 3825 - 3836

Опубликована: Янв. 1, 2023

Synergistic modification of new intermediate phase assisted crystallization and upper interface passivation for enhanced crystallization, reduced defect density, released stress in perovskite films, enabling 24.61% efficient inverted devices.

Язык: Английский

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24.96%‐Efficiency FACsPbI₃ Perovskite Solar Cells Enabled by an Asymmetric 1,3‐Thiazole‐2,4‐Diammonium

Advanced Energy Materials, Год журнала: 2023, Номер 13(15)

Опубликована: Март 1, 2023

Abstract Surmounting complicated defects at the electron transport layer (ETL) and perovskite interface plays a non‐trivial role in improving efficiency stability of solar cells (PSCs). Herein, an asymmetric modification strategy (AIMS) is developed to passivate from both SnO 2 ETL buried surface via incorporating 1,3‐thiazole‐2,4‐diammonium (TDA) into /perovskite interface. Detailed experimental calculated results demonstrate that N3 (the nitrogen atom bonding imine) TDA preferentially cures free hydroxyl (OH), oxygen vacancy ( V O ), Sn‐related on surface, while N1 vinyl) more inclined Pb 2+ I − related surface. As result, TDA‐modified FACsPbI 3 PSC yields champion power conversion (PCE) 24.96% with gratifying open‐circuit voltage oc ) 1.20 V. In addition, optimized PSCs exhibit charming air‐operational unencapsulated device sustaining 97.04% its initial PCE after storage air conditions for 1400 h. The encapsulated maintains 90.21% maximum point tracking 500

Язык: Английский

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Thermally Crosslinked F‐rich Polymer to Inhibit Lead Leakage for Sustainable Perovskite Solar Cells and Modules

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(31)

Опубликована: Июнь 8, 2023

High-performance perovskite solar cells have demonstrated commercial viability, but still face the risk of contamination from lead leakage and long-term stability problems caused by defects. Here, an organic small molecule (octafluoro-1,6-hexanediol diacrylate) is introduced into film to form a polymer through in situ thermal crosslinking, which carbonyl group anchors uncoordinated Pb2+ reduces lead, along with -CF2 - hydrophobic protecting water invasion. Additionally, passivates varieties Pb-related I-related defects coordination hydrogen bonding interactions, regulating crystallization reduced trap density, releasing lattice strain, promoting carrier transport extraction. The optimal efficiencies polymer-incorporated devices are 24.76 % (0.09 cm2 ) 20.66 (14 ). More importantly, storage stability, operational been significantly improved.

Язык: Английский

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Amphoteric Ion Bridged Buried Interface for Efficient and Stable Inverted Perovskite Solar Cells

Advanced Materials, Год журнала: 2023, Номер 36(1)

Опубликована: Ноя. 15, 2023

Abstract Synergistic morphology and defects management at the buried perovskite interface are challenging but crucial for further improvement of inverted solar cells (PerSCs). Herein, an amphoteric organic salt, 2‐(4‐fluorophenyl)ethylammonium‐4‐methyl benzenesulfonate (4FPEAPSA), is designed to optimize film energy level alignment interface. 4FPEAPSA treatment promotes growth a void‐free, coarse‐grained, hydrophobic by inducing crystal orientation. Besides, dual‐functional can chemically interact with film, passivate iodine formamidine vacancies, tending revert fermi its defect‐free state. Meanwhile, formation p‐type doping facilitate interfacial charge extraction transport PerSCs reduced carrier recombination loss. Consequently, improves efficiency devices 25.03% better storage, heat, humidity stability. This work contributes strengthening systematic understanding interface, providing synergetic approach realize precise control, effective defect suppression, efficient PerSCs.

Язык: Английский

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Phase transition engineering for effective defect passivation to achieve highly efficient and stable perovskite solar cells

Energy & Environmental Science, Год журнала: 2023, Номер 16(5), С. 2045 - 2055

Опубликована: Янв. 1, 2023

We suggest phase transition-induced surface passivation of alkylammonium formates for effective defect perovskite, achieving significantly improved efficiency and thermal stability.

Язык: Английский

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Buried Interface Dielectric Layer Engineering for Highly Efficient and Stable Inverted Perovskite Solar Cells and Modules

Advanced Science, Год журнала: 2023, Номер 10(19)

Опубликована: Апрель 25, 2023

Stability and scalability are essential urgent requirements for the commercialization of perovskite solar cells (PSCs), which retarded by non-ideal interface leading to non-radiative recombination degradation. Extensive efforts devoted reducing defects at surface. However, effects buried on degradation need be further investigated. Herein, an omnibearing strategy modify top surfaces film reduce interfacial defects, incorporating aluminum oxide (Al2 O3 ) as a dielectric layer growth scaffolds (buried surface) phenethylammonium bromide passivation surfaces), is demonstrated. Consequently, open-circuit voltage extensively boosted from 1.02 1.14 V with incorporation Al2 filling voids between grains, resulting in dense morphology reduced centers. Finally, impressive efficiencies 23.1% (0.1 cm2 22.4% (1 achieved superior stability, remain 96% 89% its initial performance after 1200 2500 h illumination, respectively. The dual modification provides universal method revealing promising prospect developing high-performance PSCs modules.

Язык: Английский

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The Synergistic Effect of Pemirolast Potassium on Carrier Management and Strain Release for High‐Performance Inverted Perovskite Solar Cells

Advanced Functional Materials, Год журнала: 2023, Номер 33(33)

Опубликована: Апрель 25, 2023

Abstract The quality of the perovskite absorption layer is critical for high efficiency and long‐term stability solar cells (PSCs). inhomogeneity due to local lattice mismatch causes severe residual strain in low‐quality films, which greatly limits availability high‐performance PSCs. In this study, a multi‐active‐site potassium salt, pemirolast (PP), added films improve carrier dynamics release stress. X‐ray photoelectron spectroscopy (XPS) Fourier‐transform infrared (FTIR) measurements suggest that proposed multifunctional additive bonds with uncoordinated Pb 2+ through carbonyl group/tetrazole N passivated I atom defects. Moreover, stress effective from surface entire layer, extraction/transport promoted PP‐modified films. As result, champion power conversion (PCE) 23.06% an ultra‐high fill factor (FF) 84.36% achieved device, ranks among best formamidinium‐cesium (FACs) addition, device exhibits excellent thermal inhibited phase separation. This work provides reliable way PSCs by releasing engineering.

Язык: Английский

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Improving the efficiency and stability of perovskite solar cells using π-conjugated aromatic additives with differing hydrophobicities

Energy & Environmental Science, Год журнала: 2023, Номер 16(6), С. 2646 - 2657

Опубликована: Янв. 1, 2023

Perovskite solar cell efficiency and stability are improved by π-conjugated aromatic additives that hydrophobic or hydrophilic due to strong binding with the perovskite.

Язык: Английский

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