Controlling the Third Component Distribution Toward High‐Efficient Ternary Organic Solar Cells

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

Published: March 4, 2025

Abstract Ternary organic solar cells (T‐OSCs) based on energy transfer can significantly boost the light absorption efficiency, thereby improving their power conversion efficiency (PCE). However, uncontrolled distribution of third component in bulk heterojunction (BHJ) device often results low ( E FRET ), and also tends to compromise interpenetrating network structure active layer. Herein, a localized deposition strategy is proposed establish with controlled (CDBHJ). Take PM6:Y6:IBC‐F for example, IBC‐F serves as donor PM6 acceptor. Compared BHJ‐based devices, proportion within phase increases from 25.1% 72.7%, enhancing 46.5% 66.8% CDBHJ‐based devices. Furthermore, improves crystallization separation kinetics during film‐forming process. Thus, exhibits superior exciton generation, diffusion, dissociation process, along higher more balanced charge transport. Consequently, achieves PCE 18.29%, which ranks among best PM6:Y6‐based T‐OSCs. This work demonstrates effectiveness controlling component, presenting an innovative pathway development highly efficient

Language: Английский

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The Phase Separation Control in All‐Polymer Solar Cells

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

Published: March 17, 2025

ABSTRACT All‐polymer solar cells (all‐PSCs) are of interest owing to their unique advantages, including remarkably improved device stability and exceptional mechanical stretchability. Over recent years, there has been a notable increase in the power conversion efficiency (PCE) all‐PSCs, largely attributed advancements morphology control active layer. Notably, domain size is paramount importance as it impacts critical factors such exciton dissociation, charge transport, collection. However, low glass transition temperature conjugated polymers, coupled with minimal change mixing entropy, often results an excessive degree phase separation. Consequently, essential comprehend evolution separation develop strategies regulate size. In this review, we elucidate key parameters that contribute enhancement present qualitative quantitative characterization techniques for Building on foundation, introduce principles regulating sizes, encompassing crystallinity, miscibility, molecular conformation from thermodynamic perspective, well film‐forming kinetics crystallization sequence kinetic perspective. Lastly, offer insights into current challenges potential future prospects all‐PSCs.

Language: Английский

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Advancing Intrinsically Stretchable Organic Photovoltaics with a Nearly Amorphous Polymer Semiconductor

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

Published: April 7, 2025

Abstract Current state‐of‐the‐art organic photovoltaic (OPV) films, composed of conjugated polymer donors and small molecule acceptors, are often limited by the high brittleness their rigid backbones, which restricts application in wearable devices. In contrast, all‐polymer OPVs have demonstrated enhanced intrinsic stretchability, but further advancements necessary to meet demands. Here, an uncharted strategy is reported enhance mechanical stretchability performance incorporating a nearly‐amorphous polymer, poly(indacenodithiophene‐co‐benzothiadiazole) (IDTBT) into layer‐by‐layer structured active layer. IDTBT possesses fracture strain ≈80%, significantly outperforming well‐known donor polymers like PM6. The incorporation enhances properties, with both optimized at low contents. More importantly, intrinsically stretchable demonstrate superior stability impressive power conversion efficiency 14.2%, highest date this category. Particularly, IDTBT‐strengthened retain 72% initial under tensile 50%, 68% even after being stretched hundreds times 30% strain, demonstrating exceptional stability. This approach underscores potential semiconductors designing highly OPVs, paving way for seamless integration electronics.

Language: Английский

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Stability of Intrinsically Stretchable Polymer Photovoltaics: Fundamentals, Achievements, and Perspectives

Progress in Polymer Science, Journal Year: 2024, Volume and Issue: unknown, P. 101899 - 101899

Published: Oct. 1, 2024

Language: Английский

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Toward Flexible and Stretchable Organic Solar Cells: A Comprehensive Review of Transparent Conductive Electrodes, Photoactive Materials, and Device Performance

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

Published: Nov. 10, 2024

Abstract Flexible and stretchable organic solar cells (FOSCs SOSCs) hold immense potential due to their versatility applicability in emerging areas such as wearable electronics, foldable devices, biointegrated systems. Despite these promising applications, several challenges remain, primarily related the mechanical durability, material performance, scalability required for commercialization. This review comprehensively highlights recent advancements design fabrication of FOSCs SOSCs, with a particular emphasis on key functional layers, including transparent conductive electrodes, interfacial photoactive materials, top electrodes. Innovations design, active layers electrodes improved flexibility, are discussed alongside developments device processes achieve power conversion efficiencies exceeding 19%. Furthermore, addresses remaining challenges, need scalable manufacturing techniques enhanced robustness under strain. Finally, prospects SOSCs analyzed, providing insights into how technologies can contribute development sustainable, high‐performance sources electronic devices other flexible electronics. offers valuable insights, bringing commercialization wearable, closer reality.

Language: Английский

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Dual Liquid Rubber Matrix Based Highly Efficient and Mechanically Robust Layer‐by‐Layer Organic Solar Cells

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

Published: March 7, 2025

ABSTRACT Developing organic solar cells (OSCs) simultaneously possessing high efficiency and robust mechanical properties is one of crucial tasks to ensure their operational reliability applicability for emerging wearable devices. However, enhancing without compromising the electrical high‐performance active materials remains a challenge. This work presents method that overcomes this limitation by embedding dual liquid rubber (DLR) matrix consisting tetra‐fluorophenyl azide penta‐fluorophenyl end‐capped polybutadienes, PFFA PFF, into layer‐by‐layer (LBL) films, which enables finely controlled film morphology built on strong noncovalent interactions cross‐linking chemistry. The resulting LBL demonstrates significantly improved stretchability reduced stiffness layer, with crack initiation strain approximately eight times higher than pristine film. potential DLR strategy demonstrated in PM6:L8‐BO flexible power conversion 17.7%, among highest efficiencies OSCs date. More importantly, also significant bending durability retain 84.2% initial performance after 5000 cycles. design concept offers new achieving highly efficient stretchable OSCs.

Language: Английский

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Transport Resistance Dominates the Fill Factor Losses in Record Organic Solar Cells

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

Published: March 5, 2025

Abstract Organic photovoltaics (OPV) are a promising solar cell technology well‐suited to mass production using roll‐to‐roll processes. The efficiency of lab‐scale cells has exceeded 20% and considerable attention is currently being given understanding minimizing the remaining loss mechanisms preventing higher efficiencies. While recent improvements partly owed reducing non‐radiative recombination losses at open circuit, low fill factor ( FF ) due significant transport resistance becoming Achilles heel OPV. term refers voltage light intensity‐dependent charge collection in low‐mobility materials. In this perspective, it demonstrated that even highest organic (OSCs) reported to‐date have performance can be attributed lead high losses. A closer look material properties influencing provided. How experimentally characterize quantify described by providing easy follow instructions. Furthermore, causes theory behind detailed. particular, relevant figures merit (FoMs) different viewpoints on integrated. Finally, we outline strategies followed minimize these future cells.

Language: Английский

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3,4-Difluoropyridine based polymer additives for optimizing aggregation and phase separation enable 20.07% efficiency layer-by-layer organic solar cells

Polymer, Journal Year: 2025, Volume and Issue: unknown, P. 128380 - 128380

Published: April 1, 2025

Language: Английский

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Achieving Efficient Intrinsically Stretchable Organic Photovoltaics with a Conjugated and Elastomeric Dual‐Network Morphology

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

Published: Sept. 16, 2024

Abstract Stretchable organic photovoltaics (OPVs) are pivotal for advancing conformable electronics, yet achieving both efficient and intrinsically stretchable OPVs remains a significant challenge. The main issue is maintaining electronic mechanical properties under deformation. Here, ternary blend system, PTzBI‐oF:PYIT:EVA presented, incorporating ethylene‐vinyl acetate (EVA) to establish conjugated elastomeric dual‐network morphology. elastomer network dissipates applied stress, preserving the crystalline packing of enabling improved stability charge carrier generation transport. Specifically, with 15% EVA content, achieved power conversion efficiency (PCE) 15.28% in rigid devices exhibited crack onset strain 17.23%. Notably, retained over 80% their initial PCE 30% strain. These findings underscore potential morphology developing high‐performance electronics various applications.

Language: Английский

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Sol‐Gel Processed Metal‐Organic Complex as Robust Hole‐Transporting Layer Enabling Efficient Organic Solar Cells

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

Published: Dec. 13, 2024

Abstract Inorganic metal oxides and salts are widely employed as hole‐transporting layers (HTLs) in organic solar cells (OSCs) due to their advantages of low cost facile preparation. However, issues such severe agglomeration can negatively impact film quality, leading reduced reproducibility device stability. To address these challenges, this work reports the synthesis a vanadium trichloride‐benzene tricarboxylic acid (BTC) complex (denoted VB) via sol‐gel process under mild conditions (60 °C annealing). The VB demonstrates well‐aligned energy levels enhanced conductivity when integrated with PM6:L8‐BO active layer. Consequently, binary OSCs incorporating HTL achieve high‐power conversion efficiency (PCE) up 19.60%. Notably, processing technique offers versatile approach for fabrication metal‐organic complex, resulting uniform dense film. robust coordination network structure endows VB‐based exceptional thermal stability, evidenced by T 80 (PCE retention 80% initial value) lifetime 5142 h, which is among best performances reported state‐of‐the‐art OSCs.

Language: Английский

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