Advancements and Strategies in CsPbI2Br Perovskite Solar Cells for Enhanced Efficiency and Stability

Nanomaterials, Год журнала: 2025, Номер 15(7), С. 483 - 483

Опубликована: Март 24, 2025

In recent years, inorganic perovskite solar cells (IPSCs), especially those based on CsPbI2Br, have attracted considerable attention owing to their exceptional thermal stability and a well-balanced combination of light absorption phase stability. This review provides an extensive overview the latest progress in CsPbI2Br PSCs, focusing film deposition techniques, crystallization control, interface engineering, charge transport layers (CTLs). High-efficiency PSCs can be achieved through optimization these key aspects. Various strategies, such as solvent component/additive optimization, been explored enhance quality films improve device performance. Despite significant progress, challenges remain, including need for even higher films, deeper understanding energetics, exploration novel CTLs. Additionally, long-term continues critical concern. Future research should focus refining preparation methods, developing sophisticated interfacial layers, exploring compatible materials, ensuring durability encapsulation moisture-resistant materials.

Язык: Английский

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Optimized Crystallization of CsPbI₂Br Films through the Incorporation of H₂O for High‐Efficiency All‐Inorganic Perovskite/Organic Tandem Solar Cell

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Abstract Among all‐inorganic perovskites, CsPbI 2 Br possesses excellent photovoltaic performance, intrinsic thermal stability and suitable bandgap superior phase‐stability, demonstrating large application potential for single‐junction perovskite solar cells (PSCs) perovskite/organic tandem (TSCs). However, a critical challenge persists in the effective control of crystallization process film, as inadequate can result substantial decrease photoelectric efficiency cells. Herein, simple approach utilizing small amount H O additive is introduced to optimize film. Specifically, introduction water facilitates formation numerous seed crystals within precursor solution, promoting subsequent Ostwald ripening Additionally, presence enhances desorption DMSO from Br, further improving overall crystallization. As result, Br‐basedPSC exhibits high power conversion (PCE) 16.7% an open‐circuit voltage ( V OC ) 1.36 V. By integrating these Br‐based front sub‐cells with narrow‐bandgap PM6:Y6‐based rear sub‐cells, PCE 23.21% 2.17 achieved, illustrating TSCs high‐efficiency Furthermore, unencapsulated display under ambient air conditions operation.

Язык: Английский

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Electron Extraction Optimization for Carbon‐Based Hole‐Conductor‐Free Perovskite Photovoltaics With Record 1.41 V V_OC

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 16, 2025

Carbon-based CsPbI2Br perovskite solar cells (PSCs) free of a hole-transport layer (HTL) have emerged as promising photovoltaics due to their low processing cost and superior stability. However, the voltage deficit resulting from inefficient carrier extraction causes insufficient power conversion efficiency (PCE), severely hindering progress. Here, gradient electron energy level modulation strategy proves effective in reducing losses through rapid photogenerated electrons. This process enhances separation/collection reduces recombination at back contact, thereby achieving high-performance photovoltaics. It is demonstrated that front extraction, equally critical prevailing perovskite/carbon accounts for significant contributing factor carbon-based HTL-free PSCs. The PSCs deliver record open-circuit (VOC) 1.41 V PCE 17.42% retain more than 92% initial after 1, 000 h. These results highlight potential

Язык: Английский

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Hypophosphorous Acid Additive Engineering for Efficient Cu₂AgBiI₆ Solar Cells

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 24, 2025

Abstract Perovskite solar cells have demonstrated significant performance advancements over the past decade, characterized by their low‐cost fabrication and compatibility with both rigid flexible substrates. Despite potential, challenges such as long‐term instability toxicity of lead in high‐performance devices hinder commercialization. Recently, perovskite‐inspired material Cu 2 AgBiI 6 (CABI) is explored a light absorber due to its promising optoelectronic properties. However, wide bandgap difficulties producing high‐quality films limit photovoltaic performance. In this study, hypophosphorous acid (H 3 PO ) introduced CABI precursor solution, generating situ silver nanoparticles that enhance absorption through localized surface plasmon resonance. The incorporation H improved crystallinity morphology while reducing defect states. Solvent vapor annealing further employed optimize film quality. As result, optimal cell achieved power conversion efficiency 2.22%, fourfold increase pristine (0.55%). Additionally, device an 5.66% under 1000 lux 6000 K indoor illumination, showcasing potential for powering Internet Things devices. This strategy validated CuAgBiI 5 system, offering pathway cells.

Язык: Английский

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Distinct rubrene/CsPbI2Br interfacial energetics on spin-coated and vacuum evaporated perovskite films

Applied Surface Science, Год журнала: 2025, Номер unknown, С. 163663 - 163663

Опубликована: Май 1, 2025

Язык: Английский

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Polymers for Perovskite Solar Cells

JACS Au, Год журнала: 2024, Номер 4(9), С. 3400 - 3412

Опубликована: Авг. 31, 2024

Perovskite solar cells (PSCs) are recognized as one of the most promising next-generation photovoltaics, primarily due to their exceptional power conversion efficiency, ease processing, and cost-effectiveness. Despite these advantages, challenges remain in achieving high-quality films ensuring long-term stability PSCs, which hinder widespread commercialization. Polymers, characterized by multifunctional groups, superior thermal stability, flexible long chains, cross-linking capabilities, offer significant potential enhance performance reliability PSCs. This review comprehensively presents multifaceted roles that polymers play Through carefully controlling interactions between perovskites, crucial aspects such film crystallization kinetics, carrier transport process, ion migration issues, mechanical properties under bending can be effectively regulated maximize device performance. Furthermore, hydrophobic strong chelated networks significantly PSCs various environmental conditions while mitigating lead leakage, thereby addressing concerns durability. Moreover, this Perspective identifies pathways for further advancing polymer-based strategies PSC applications.

Язык: Английский

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Advanced Surface Passivation Enables High-Performance Carbon-Based All-Inorganic Perovskite Solar Cells

ACS Applied Energy Materials, Год журнала: 2024, Номер 7(22), С. 10686 - 10692

Опубликована: Ноя. 13, 2024

The all-inorganic perovskite CsPbI2Br has garnered significant attention due to its excellent thermal stability and suitable band gap. use of carbon electrode materials can further enhance the moisture device reduce cost. However, introduction such causes an energy level mismatch poor contact between perovskite, resulting in carrier recombination. In this study, we incorporated small molecule N-(4-Cyanophenyl)guanidine (NG) as a modifier passivate trap density, manage level, improve interface contact. With addition NG, efficiency increased from 10.24% 12.89%. Moreover, was significantly improved. This study underscores importance modifiers offers concise strategy for enhancing solar cells with respect performance stability.

Язык: Английский

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Flattening of the Cratered Inorganic Perovskite Film via Precursor Engineering for CsPbI₂Br Solar Cells with 16.86% Efficiency

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(35), С. 13392 - 13400

Опубликована: Авг. 19, 2024

Understanding the fundamental chemistry of perovskite precursor is crucial to accurately controlling crystal morphology films and thus contributing efficient stable solar cells. Here, we report growth uniform pinhole-free CsPbI2Br via engineering by introducing a small amount 4,4′-dihydroxybiphenyl. The rationally designed exhibits colloidal feature with an average size 175 nm due hydrogen bonding between As result, coherent across bottom surface film realized, affording high-quality teeth-like crystals enlarged significantly reduced carrier traps. Eventually, prepared inorganic cells tailored precursors exhibit high power conversion efficiency 16.86%, along impressive open-circuit voltage 1.38 V. Moreover, compared control devices, unencapsulated target devices show remarkably enhanced thermal UV stability in ambient atmosphere.

Язык: Английский

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Zwitterion additive-assisted crystal growth regulation and defect passivation for high-performance inorganic perovskite solar cells

Applied Physics Letters, Год журнала: 2024, Номер 125(25)

Опубликована: Дек. 16, 2024

Inorganic CsPbI2Br perovskites solar cells (PSCs) have attracted extensive interest owing to their outstanding optoelectronic properties. Nevertheless, the undesirable perovskite film quality and severe charge recombination dramatically restrict performance improvement. Herein, we propose an additive strategy modulate crystallization process reduce defect density by adding 3-(1-pyridinio)-1-propanesulfonate (PPS) zwitterionic molecules into precursor solution. The incorporation of PPS zwitterion can not only retard crystal growth rate with uniform morphology enlarged grain size, but also effectively passivate defects via interacting uncoordinated sites in film. In addition, greatly ameliorates energy level alignments at interface. Thus, photogenerated carriers are more efficiently extracted, nonradiative is significantly suppressed. With these benefits, optimized PPS-based device delivers a champion efficiency 16.37% high open-circuit voltage (VOC) 1.302 V contrast pristine inferior 14.26% (VOC 1.183 V). unencapsulated presents improved long-term stability preserving ∼85% initial after 760 h storage ambient atmosphere. These findings provided important insights using materials for constructing efficient stable inorganic PSCs.

Язык: Английский

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Defect Regulation of Low‐Temperature‐Processed CsPbI₂Br Solar Cells Based on Silane Additives

Solar RRL, Год журнала: 2024, Номер unknown

Опубликована: Дек. 24, 2024

The development of inverted all‐inorganic perovskite solar cells (PSCs) is limited by the defect‐induced nonradiative recombination. Herein, a strategy to enhance efficiency and stability p‐i‐n type CsPbI 2 Br introducing (3‐glycidyloxypropyl)trimethoxysilane (GOPTS) into precursor solution reported. incorporation GOPTS significantly reduces voids grain boundaries in films fabricated at low temperatures (150 °C). alkoxy, epoxy, ether groups effectively passivate uncoordinated Pb, diminishing recombination centers associated with defects. Density functional theory simulations suggest that increases vacancy formation energies Cs I, leading reduced Furthermore, mitigates photoinduced phase segregation further enhances performance PSCs. This modification results an increase power conversion cells, from 11.83% 13.32%, when self‐assembled monolayers are used as hole transport layer. study underscores potential silane‐based additives defect passivation for perovskites, providing viable route advancement high‐efficiency cells.

Язык: Английский

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