Lewis Base Strategy for Crystallization Control and Buried Interface Passivation on Hydrophobic PTAA Substrate for Efficient Tin–Lead Perovskite and All-Perovskite Tandem Solar Cells

ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 1117 - 1128

Published: Feb. 7, 2025

Language: Английский

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A Revisit of Crystallization in Tin Halide Perovskite Thin Films: From Nucleation, Intermediate to Crystal Growth

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 25, 2024

Abstract Perovskite solar cells (PSCs) are exuding unique charm in the third generation of thin film cell technology with high power conversion efficiency (PCE) and low production cost. Recently, lead‐free tin halide perovskite (TPSCs) have drawn significant research interests due to advantages toxicity, near‐ideal bandgap carrier mobility. However, rapid crystallization easy oxidation limits quality final performance cells. Therefore, deposition high‐quality films is key advance TPSCs. In this review, classical theory solution nucleation crystal growth reviewed correlated practical film. The physicochemical properties those lead counterpart differences process carefully compared. On basis, recent regulation strategies systematically summarized terms management, intermediate phase engineering regulation. addition, preparation mixed tin‐lead (Sn‐Pb) PSCs toward also discussed, as well limiting factors for device stability. Finally, future challenges prospects discussed more efficient stable

Language: Английский

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Defects Mitigation and Charge Transport Promotion via a Multifunctional Lewis Base for Efficient 2D/3D Tin Perovskite Solar Cells

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

Published: Feb. 26, 2025

Abstract Tin perovskite solar cells (PSCs) have garnered considerable attention as promising alternatives to lead PSCs due their lower toxicity and outstanding optoelectronic properties. However, efficiency stability, particularly in 2D/3D tin PSCs, are usually hindered by high defect densities inefficient carrier transport. In this study, a small‐molecule Lewis base with multiple functional groups‐cyanoacetohydrazide (CAH) is employed mitigate defects enhance charge transport PSCs. It revealed that the carbonyl, amine, cyano groups CAH form strong chemical bonds Sn 2+ ions, resulting synergetic coordination effects. Moreover, interaction between effectively regulates crystallization process of film, high‐quality film enhanced crystallinity, reduced density, modulated phase distribution. As result, optimized achieve remarkable power conversion 15.06%, marking one highest values for Furthermore, devices exhibit retaining 95% initial performance after 2000 h storage nitrogen atmosphere.

Language: Английский

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Rare Earth‐Induced CoO₆ Octahedral Distortion in Perovskite: An Efficient Catalytic Platform for RuO₂‐Catalyzed Water Oxidation

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 22, 2024

Abstract Rare earth (RE)‐based perovskites are considered as promising platform for oxygen evolution reaction (OER) due to their low cost and tunable structures. However, the systematic synthesis of perovskite catalysts with satisfactory performance has rarely been reported. Herein, a general synthetic protocol RE‐substituted LaCoO 3 (RE‐LCO) is demonstrated. Particularly, after loaded RuO 2 , as‐prepared :0.2Ce‐LCO hybrid structures exhibit OER overpotential 135 mV at 10 mA cm −2 in 1.0 m KOH, together remarkable long‐term operation, representing one most efficient robust Ru‐based catalysts. Comprehensive experimental results indicate that enhanced mechanism attributed Ce‐substitution, which alters geometric configuration CoO 6 octahedra generates more vacancies. Furthermore, interaction between Ce‐LCO stabilizes valence state Ru site. Theoretical calculations corroborate Co 3d orbitals overlap Ce 4f near Fermi level, greatly improving electron transfer atoms.

Language: Английский

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Heteroatomic molecules for coordination engineering towards advanced Pb-free Sn-based perovskite photovoltaics

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 23, 2024

Coordination engineering via developing various heteroatomic molecules has enabled Sn-based perovskite solar cells with efficiency approaching 16% and robust stability. This review summarizes the fundamentals, advances, prospects of this topic.

Language: Английский

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The path toward metal-halide perovskite industrialization

Cell Reports Physical Science, Journal Year: 2024, Volume and Issue: 5(10), P. 102245 - 102245

Published: Oct. 1, 2024

SummaryThe advent of metal-halide perovskite solar cells has revolutionized the field photovoltaics. The high power conversion efficiencies exceeding 26% at laboratory scale—mild temperature processing, possibility fabrication on multiple substrates, and easy composition-dependent band-gap tunability make perovskites suitable for both single-junction tandem-multijunction cells. They are attractive in various applications, from utility-scale to building-integrated indoor To bring maturity, next big step is funnel efforts into developing reproducible high-quality materials via high-throughput manufacturing, addressing issues inherent material instability. Another key issue environmental sustainability associated with presence lead. In this perspective, a special focus placed real-world applications photovoltaics, starting selection deposition techniques finally discussing stability how improve it toward wider industrialization.Graphical abstract

Language: Английский

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Managing Crystallization and Phase Distribution via 2D Perovskite Seed Crystals for 2D‐3D Tin‐based Perovskite Solar Cells

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 23, 2024

Abstract Various popular large organic cations have been extensively used as the essential additives in perovskite precursor solution due to their satisfactory passivation effect but may produce low‐n value (n ≤ 2) 2D phases with undesired distribution. Meanwhile, remaining easy oxidation of Sn 2+ and p‐type self‐doping perovskites are also detrimental ultimate photovoltaic properties stability tin (Sn)‐based solar cells (PSCs). Here, 3AMPYSnI 4 crystals (3AMPY = 3‐(aminomethyl)pyridinium)) designed applied adjust crystallization process phase distribution Sn‐based perovskite. Consequently, strong coordination interaction between 3AMPY 3D components introduced nucleation sites by not only decreases increases phase, inhibits self‐p‐doping perovskites, resulting lower trap density non‐radiative recombination loss, faster carrier extraction transfer, higher for 2D‐3D PSCs. As a result, optimized devices deliver an increased power conversion efficiency from initial 10.91% 13.28% retain 96.0% original performance more than 3000 h nitrogen (N 2 ) atmosphere.

Language: Английский

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Stability Challenges in Industrialization of Perovskite Photovoltaics: From Atomic‐Scale View to Module Encapsulation

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 3, 2024

Abstract Perovskite photovoltaics have attracted significant attention in both academia and industry, benefiting from the superiorities of high efficiency, low cost, simplified fabrication process. Importantly, long‐term stability is essential for practical industrialization; however, challenge remains a impediment. Notably, an prerequisite applications. Unfortunately, as device area increases, even to module level, efficiency gradually diminishes, deteriorates. This review summarizes advances perovskite photovoltaic technology comprehensive perspectives, including atomic‐scale, grain boundary, film morphology, interface, charge transport layer, electrode, laser etching, encapsulation. First, highlights ongoing importance industrialization photovoltaics. Then, presents explores relationship between large‐area modules, shedding light on issue. Later, explains issue terms structure, chemistry, interfaces, design, operation, external environment, proposes strategies ranging atomic‐scale Finally, emphasizes various improvement strategies, particularly multilevel synergistic optimization, offering fundamental guidance

Language: Английский

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Optimizing the Hole-Transport Layer with Ammonium Thiocyanate for Enhanced Performance in Lead-Free Perovskite Light-Emitting Diodes

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

Published: Jan. 7, 2025

Tin-based perovskite materials are arising as promising contenders for high-efficiency pure-red light-emitting diodes. However, the primary limitation to external quantum efficiency (EQE) of tin-based diodes (Sn-PeLEDs) stems from rapid crystallization processes and adverse P-type self-doping effects. In this study, we have effectively controlled speed perovskites through rational interfacial engineering improved stability tin halide film. We utilized ammonium thiocyanate (NH4SCN) alter properties hole-transport layer, which consists poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS). Thiocyanate ions (SCN–) can form interactions with Sn–I frameworks. This not only slows rate but also suppresses oxidation Sn2+, enhancing its passivating defects associated undercoordinated Sn2+. results in smooth, uniform, compact thin films that eliminate Sn4+ within resulting film, leading enhanced radiative recombination. Sn-PeLEDs devices achieving a peak EQE 5.8%, approximately 4.6-fold higher than control device. Additionally, Commission Internationale de L'Eclairage (CIE) coordinates (0.69, 0.31) demonstrate close conformity National Television System Committee (NTSC) standardized red standard, indicating high degree color fidelity.

Language: Английский

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Tailored Supramolecular Interface Enables Efficient and Stable Tin Halide Perovskite Photovoltaics

ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 1357 - 1365

Published: Feb. 24, 2025

Language: Английский

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