Minimizing the buried interfacial energy loss using a fluorine-substituted small molecule for 25.92%-efficiency and stable inverted perovskite solar cells

Energy & Environmental Science, Год журнала: 2024, Номер 17(19), С. 7342 - 7354

Опубликована: Янв. 1, 2024

Tetrafluorosuccinic acid was introduced into the buried interface to stabilize FA cations, mediate crystal growth of perovskite and reduce hole-transport barrier, delivering a record efficiency 25.92% for RbCsFAMA-based solar cells.

Язык: Английский

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A Chain Entanglement Gelled SnO₂ Electron Transport Layer for Enhanced Perovskite Solar Cell Performance and Effective Lead Capture

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 8, 2025

Abstract SnO₂ is a widely used electron transport layer (ETL) material in perovskite solar cells (PSCs), and its design optimization are essential for achieving efficient stable PSCs. In this study, the situ formation of chain entanglement gel polymer electrolyte reported an aqueous phase, integrated with as ETL. Based on self‐polymerization 3‐[[2‐(methacryloyloxy)ethyl]dimethylammonium]propane‐1‐sulfonic acid (DAES) environment, combining catalytic effect LiCl (as Lewis acid) salting‐out effect, introduction polyvinylpyrrolidone (PVP) other chain, gelled SnO 2 (G‐SnO ) structure successfully constructed wide range functions. The PDEAS‐PVP achieves passivation Pb ⁺ capture through chemical chelation mechanisms explored. results demonstrated that all‐in‐air prepared PSC based G‐SnO exhibited excellent power conversion efficiency (PCE) 24.77% retained 83.3% their initial after 2100 h air exposure. Additionally, exposes more C═O S═O active sites, significantly enhanced lead absorption capability

Язык: Английский

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Regulating the lattice strain in perovskite films to obtain efficient and stable perovskite solar cells

Chemical Engineering Journal, Год журнала: 2023, Номер 481, С. 148464 - 148464

Опубликована: Дек. 31, 2023

Язык: Английский

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Efficient Carbon‐Based Hole‐Conductor‐Free Printable Mesoscopic Perovskite Solar Cells via a Multifunctional Fluorinated Molecule

Advanced Functional Materials, Год журнала: 2024, Номер 34(38)

Опубликована: Май 2, 2024

Abstract Benefiting from their simple and cost‐effective fabrication procedures, printable mesoscopic perovskite solar cells (p‐MPSCs) exhibit substantial potential for large‐scale production. In p‐MPSCs, the thickness of filled in TiO 2 ZrO mesoporous layers is ≈3 µm. Therefore, crystallization process more intricate challenging structure than general planar thin film (0.3–0.5 µm). this work, a multifunctional fluorinated molecule applied to work as an additive improve crystallization, enhance device efficiency, elevate operational stability. This forms robust coordination between its carbonyl groups uncoordinated Pb 2+ , thereby effectively passivating defects. The hydrophobic properties contribute device's water‐resistant capability long‐term With these synergistic effects, power conversion efficiency (PCE) small‐area (0.1 cm ) reaches 20.15% under 1 sun illumination. Large‐area modules (56.4 are fabricated PCE 15.41%.

Язык: Английский

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Customizing Aniline‐Derived Molecular Structures to Attain beyond 22% Efficient Inorganic Perovskite Solar Cells

Angewandte Chemie, Год журнала: 2024, Номер 136(42)

Опубликована: Июль 25, 2024

Abstract The characteristics of the soft component and ionic‐electronic nature in all‐inorganic CsPbI 3‐x Br x perovskite typically lead to a significant number halide vacancy defects ions migration, resulting reduction both photovoltaic efficiency stability. Herein, we present tailored approach which anion‐fixation undercoordinated‐Pb passivation are achieved situ during crystallization by employing molecule derived from aniline, specifically 2‐methoxy‐5‐trifluoromethylaniline (MFA), address above challenges. incorporation MFA into film results pronounced inhibition ion trap density, an enhancement grain size, extension charge carrier lifetime, more favorable alignment energy levels. These advantageous contribute achieving champion power conversion (PCE) 22.14 % for MFA‐based solar cells (PSCs), representing highest reported thus far this type inorganic metal cells, best our knowledge. Moreover, resultant PSCs exhibits higher environmental stability photostability. This strategy is anticipated offer advantages large‐area fabrication, particularly terms simplicity.

Язык: Английский

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Enhancing Ultraviolet Stability and Performance of Wide Bandgap Perovskite Solar Cells Through Ultraviolet Light‐Absorbing Passivator

Small Methods, Год журнала: 2024, Номер unknown

Опубликована: Март 19, 2024

Abstract Ultraviolet light (UV) has caused tremendous damage to perovskite solar cells (PSCs), degrading the and shortening their lifetime. Defects act as non‐radiative recombination sites, accelerate degradation process, reduce efficiency of device weaken stability cell. In this work, realize efficient stable p–i–n wide bandgap under UV, a synergetic strategy utilizing UV light‐absorbing passivator, (Trifluoroacetyl) benzotriazole (TFABI), enhance photostability regulate defect passivation is proposed. By using TFABI, absorption layer suppressed, spectral response enhanced Pb vacancy defects are passivated. As result, target achieves an 21.54%, exhibiting excellent long‐term 365 nm irradiation. After 60 h irradiation, it retains 85% its initial value (60 mW cm −2 , RH 25–30%, 25 °C).

Язык: Английский

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Customizing Aniline‐Derived Molecular Structures to Attain beyond 22% Efficient Inorganic Perovskite Solar Cells

Angewandte Chemie International Edition, Год журнала: 2024, Номер unknown

Опубликована: Июль 25, 2024

The characteristics of the soft component and ionic-electronic nature in all-inorganic CsPbI

Язык: Английский

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Repairing Interfacial Defects in Self‐Assembled Monolayers for High‐Efficiency Perovskite Solar Cells and Organic Photovoltaics through the SAM@Pseudo‐Planar Monolayer Strategy

Advanced Science, Год журнала: 2024, Номер unknown

Опубликована: Июль 30, 2024

Lately, carbazole-based self-assembled monolayers (SAMs) are widely employed as effective hole-selective layers (HSLs) in inverted perovskite solar cells (PSCs). Nevertheless, these SAMs tend to aggregate solvents due their amphiphilic nature, hindering the formation of a monolayer on ITO substrate and impeding passivation deep defects perovskites. In this study, series new including DPA-B-PY, CBZ-B-PY, POZ-B-PY, POZ-PY, POZ-T-PY, POZ-BT-PY synthesized, which interfacial repairers coated atop CNph SAM form robust SAM@pseudo-planar HSL efficient PSCs. The strategy enables well-aligned interface with perovskites, synergistically promoting crystal growth, improving charge extraction/transport, minimizing nonradiative recombination loss. As result, POZ-BT-PY-modified PSC realizes an impressively enhanced efficiency up 24.45% together fill factor 82.63%. Furthermore, wide bandgap achieving over 19% efficiency. Upon treatment monolayer, also demonstrates non-fullerene organic photovoltaics (OPVs) based PM6:BTP-eC9 blend, achieves 17.07%. Importantly, modified PSCs OPVs all show remarkably improved stability under various testing conditions compared control counterparts.

Язык: Английский

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Dual‐Site Molecular Dipole Enables Tunable Interfacial Field Toward Efficient and Stable Perovskite Solar Cells

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 5, 2024

Abstract The interfacial management in perovskite solar cells (PSCs), including mitigating the carrier transport barrier and suppressing non‐radiative recombination, still remains a significant challenge for efficiency stability enhancement. Herein, by screening family of fluorine (F) terminated dual‐site organic dipole molecules, study aims to gain insight into molecular array toward tunable field. Both experimental theoretical results reveal that these functional molecules can effectively anchor on surface through Lewis acid‐base interaction. In addition, tailored side‐chain with F atoms allows altering constructing well matched perovskite/Spiro‐OMeTAD contact. As result, inserting modulates interface deliver gradient energy level alignment, facilitating extraction transport. optimal trifluoro‐methanesulfonamide mediated N‐i‐P PSCs achieve highest 25.47%, together enhanced operational under 1000 h simulated 1‐sun illumination exposure. These findings are believed provide design sufficient tunability perovskite‐based optoelectronic devices.

Язык: Английский

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Healing the Buried Interface by a Plant-Derived Green Passivator for Carbon-Based CsPbIBr₂ Perovskite Solar Cells

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(12), С. 14974 - 14983

Опубликована: Март 15, 2024

Perovskite solar cells (PSCs) have attracted extensive attention in photovoltaic applications owing to their superior efficiency, and the buried interface plays a significant role determining efficiency stability of PSCs. Herein, plant-derived small molecule, ergothioneine (ET), is adopted heal defective CsPbIBr2-based PSC improve power conversion (PCE). Because strong interaction between Lewis base groups (–C═O –C═S) ET uncoordinated Pb2+ perovskite film from theoretical simulations experimental results, defect density CsPbIBr2 significantly reduced, therefore, nonradiative recombination corresponding device simultaneously suppressed. Consequently, target achieves high PCE 11.13% with an open-circuit voltage (VOC) 1.325 V for hole-free, carbon-based PSCs 14.56% VOC 1.308 CsPbI2Br Furthermore, because increased ion migration energy, detrimental phase segregation this mixed-halide weakened, delivering excellent long-term unencapsulated ambient conditions over 70 days 96% retention rate initial efficiency.

Язык: Английский

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