High‐Performance Sky‐Blue Perovskite Spin‐Light Emitting Diodes Due to Chiral Ionic Liquid Implantation and Passivation

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract In chiral hybrid perovskites (CHPs), the generation of polarized spin current and manipulation exciton recombination are expected to produce circularly electroluminescence (CP‐EL) through chiral‐induced selectivity (CISS). It opens a new avenue for developing single junction light‐emitting diodes (spin‐LEDs). The recent challenge lies primarily in balancing device performance CP‐EL polarization. Beyond this, blue spin‐LEDs have not been fully realized. lacks studies interior spin‐chiroptical properties. Herein, promising chirality transfer methodology is initiated fabricating sky‐blue (≈491 nm) using synthesized ionic liquids (CILs). They on one side yield material passivation, giving rise chiroptical (EL) An optimal external quantum efficiency (EQE) 13.0% with dissymmetry factor 0.158 obtained. Importantly, this method leads elevation orbit coupling (CISOC) strength up 0.9717 eV A, long decay lifetime over 1 ns A large approximately 75% achieved ambient conditions. This work unlocks spin‐LEDs, further construction spin‐chiroptics relationship.

Language: Английский

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Eco-Friendly All-Layer Green Solvent Efficient Perovskite Solar Cells

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(35), P. 13371 - 13381

Published: Aug. 22, 2024

Perovskite solar cells (PSCs) have attracted significant attention for their utility in next-generation energy production technology due to rapidly increasing power conversion efficiencies (PCEs), which recently reached levels comparable those of commercially successful Si cells. The simplicity and low cost the perovskite solution processability further heightened commercial viability. However, use N,N-dimethylformamide (DMF)─a volatile toxic solvent─in this process is considered be a major issue that not only poses challenges at lab scale but also can potentially lead serious human environmental damage if introduced into lines upon being commercialized. present study aims address toxicity problem by classifying solvents green categories using create high-efficiency PSCs. A specific challenge encountered was solubility materials solvents, led creation films with inferior optical electrical properties. This resolved ionizing addition organic halide materials, ultimately enabling fabrication PSCs PCEs reaching up 20.6%. PCE metric all-layer solvent PSC as high 4.54, exceeding all solvent-based PSCs, thereby showing achieves efficiency while addressing relevant health impacts.

Language: Английский

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Progress of 2D Perovskite Solar Cells: Structure and Performance

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Abstract 2D perovskite has demonstrated great potential for application in photovoltaic devices due to the tunable energy bands, suppressed ion migration, and high stability. However, solar cells (PSCs) display suboptimal efficiency comparison 3D cells, which can be attributed quantum confinement dielectric effects resulting from intercalation of organic spacer cations into lattice. This review starts with fundamental structural characteristics, optoelectronic properties, carrier transport dynamics PSCs, followed by discussion approaches improve performance including manipulation crystal orientation, phase distribution, pure phase, layer, device engineering. Then advancements structural, humidity, thermal, maximum power point tracking stability PSCs are summarized. Afterward, applications 2/3D discussed. provides a comprehensive understanding relationship between structure as well offers insights constructing efficient stable integrating perovskites.

Language: Английский

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Thermally Assisted Energy Barrier Engineering for High-Performance Planar Inverted Perovskite Solar Cells Processed with Aqueous Green Solvents

Published: Jan. 1, 2025

Language: Английский

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Green solvent engineering of quasi-two-dimensional Dion-Jacobson perovskite films for efficient solar cells

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161466 - 161466

Published: March 1, 2025

Language: Английский

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Crystallographic Insights into the Structural Heterogeneities of 2D Ruddlesden‐Popper Perovskite Films

Advanced Materials Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 27, 2025

Abstract 2D Ruddlesden‐Popper phase perovskites (RPPs) offer significant potential for next‐generation photovoltaics owing to their excellent intrinsic stability. Fully understanding the crystalline configuration of perovskite films is essential further enhancing power‐conversion‐efficiency (PCE) solar cells (2D‐PSCs). Herein, structural heterogeneities, including profiles crystal orientation and defect distribution, at both microscopic mesoscopic scales are investigated. Empty voids observed in buried interface associated with Brownian tree‐shaped dendritic structures, orientations RPPs upper lower parts these areas mismatched. This hinders charge carrier transport along vertical direction likely responsible PCE 2D‐PSCs compared 3D counterparts. The formation mechanism mismatching revealed based on compositional analysis. results suggest that synchronizing rate crystallization different film may eliminate thereby reduce gap between 2D‐ 3D‐PSCs. work provides a comprehensive crystallographic heterogeneities films, highlighting new pathways design more efficient RPP films.

Language: Английский

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Challenges and perspectives for the perovskite module research

Chem, Journal Year: 2025, Volume and Issue: unknown, P. 102542 - 102542

Published: April 1, 2025

Language: Английский

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Synergistic Passivation via Amino Acid Derivative for Highly Efficient Quasi-2D Perovskite Green Light-Emitting Diode

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: May 12, 2025

Quasi two-dimensional (2D) perovskite light-emitting diodes (PeLEDs) have emerged as promising candidates for next-generation displays and solid-state lighting. However, defects in the films often hinder device performance of quasi-2D PeLEDs, leading to nonradiative recombination efficiency losses. Herein, we introduce a novel synergistic passivation strategy using an amino acid derivative Boc-N3-Cbz-L-2,3-diaminopropionic (BNCDA), with multiple C═O N-H functional groups passivate suppress ion migration films. By incorporating agent into precursor solution, significantly reduced defect density enhanced radiative recombination. As result, optimized PeLEDs demonstrate remarkable external quantum (EQE) 22.6% maximum luminance 57951 cd m-2 511 nm emission. Simultaneously, optimal devices display superior spectral stability operation lifetime ambient air. This work highlights importance effect effectively passivating provides interesting way select molecules fabricating high-performance future lighting applications.

Language: Английский

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Molecular Structure Tailoring of Organic Spacers for High-Performance Ruddlesden–Popper Perovskite Solar Cells

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 17(1)

Published: Oct. 10, 2024

Abstract Layer-structured Ruddlesden–Popper (RP) perovskites (RPPs) with decent stability have captured the imagination of photovoltaic research community and bring hope for boosting development perovskite solar cell (PSC) technology. However, two-dimensional (2D) or quasi-2D RP PSCs are encountered some challenges large exciton binding energy, blocked charge transport poor film quality, which restrict their performance. Fortunately, these issues can be readily resolved by rationally designing spacer cations RPPs. This review mainly focuses on how to design molecular structures organic spacers aims endow RPPs outstanding applications. We firstly elucidated important roles in impacting crystallization kinetics, transporting ability Then we brought three aspects attention spacers. Finally, presented specific structure strategies aiming improve performance PSCs. These proposed this will provide new avenues develop novel advance RPP technology future

Language: Английский

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Green Solvent Strategies for the Sustainable Development of Perovskite Solar Cells

Chemical Communications, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 18, 2024

Perovskite solar cells have been of great interest over the past decade, reaching a remarkable power conversion efficiency 26.7%, which is comparable to best performing silicon devices. Moreover, capability perovskite be solution-processed at low cost makes them an ideal candidate for future photovoltaic systems that could replace expensive and III-V systems. However, current state solution-processing heavily dependent on toxic solvents such as DMF, chlorobenzene, diethyl ether so on. As devices approach commercialization large-scale fabrication, solution must first found reduce risks associated with processes. This review article presents summary general attempts achieving fully green-processed cell fabrication. A thorough examination popular possible alternatives performed, followed by their applications in layer fabrication (including anti-solvents) charge transport

Language: Английский

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