Correlating miscibility, mechanical parameters, and stability of ternary polymer blends for high-performance solar cells

Energy & Environmental Science, Год журнала: 2023, Номер 16(11), С. 5052 - 5064

Опубликована: Янв. 1, 2023

The established miscibility–function relationships are helpful to predict mechanical properties and stability in organic photovoltaic devices based on multicomponent systems.

Язык: Английский

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Progress of organic photovoltaics towards 20% efficiency

Nature Reviews Electrical Engineering, Год журнала: 2024, Номер 1(9), С. 581 - 596

Опубликована: Авг. 21, 2024

Язык: Английский

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Intrinsically Stretchable Organic Photovoltaic Cells with Improved Mechanical Durability and Stability via Dual‐Donor Polymer Blending

Advanced Functional Materials, Год журнала: 2024, Номер 34(29)

Опубликована: Фев. 8, 2024

Abstract Intrinsically stretchable organic photovoltaic cells (OPVs) have garnered significant attention as crucial devices for powering next‐generation wearable electronics. Despite the rapid power conversion efficiency gains in champion OPVs, their brittle stretchability has failed to meet demands of Internet Things era, severely hindering further development and practical applications. In this regard, a new dual‐donor polymer blending strategy is demonstrated constructing intrinsically OPVs by designing novel high‐molecular–weight conjugated PM6‐HD. This PM6 derivative featuring long alkyl chains can reach sufficiently high molecular weight thus exhibits fracture strain exceeding 90%, which ≈12 times higher than benchmark PM6. Synergistic optimization mechanical properties performance polymer:small molecule all‐polymer systems constructed from physical blends PM6‐HD achieved. Crucially, resulting OPV demonstrates excellent stability, with record PCE 80% 50.3% retention above even after 1000 cycles cyclic stretching at strains. work contributes advancement technology opens up possibilities its integration into electronic devices.

Язык: Английский

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High efficiency and thermally stable ternary all-polymer solar cells achieved by alloyed vinyl-linked polymerized small-molecule acceptors

Nano Energy, Год журнала: 2024, Номер 122, С. 109338 - 109338

Опубликована: Янв. 25, 2024

Язык: Английский

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The Phase Separation Control in All‐Polymer Solar Cells

SusMat, Год журнала: 2025, Номер unknown

Опубликована: Март 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.

Язык: Английский

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Unraveling the Stretch‐Induced Microstructural Evolution and Morphology–Stretchability Relationships of High‐Performance Ternary Organic Photovoltaic Blends

Advanced Materials, Год журнала: 2022, Номер 35(3)

Опубликована: Ноя. 5, 2022

The stretchability and stretch-induced structural evolution of organic solar cells (OSCs) are pivotal for their collapsible, portable, wearable applications, they mainly affected by the complex morphology active layers. Herein, a highly ductile conjugated polymer P(NDI2OD-T2) is incorporated into layers high-efficiency OSCs based on nonfullerene small molecule acceptors to simultaneously investigate morphological, mechanical, photovoltaic properties under stretching ternary blend films with various acceptor contents. robustness indicated evolution, which monitored in real-time combination situ wide/small angle X-ray scattering. It found that adding soft can enhance more entangled chains tie dissipate strain. Furthermore, blends be superbly predicted 3D equivalent box model. This work provides instructive insight guidance designing stretchable electronics predicting multicomponent blends.

Язык: Английский

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A generic approach yields organic solar cells with enhanced efficiency and thermal stability

Aggregate, Год журнала: 2022, Номер 4(2)

Опубликована: Ноя. 5, 2022

Abstract The use of deuterium are critical for promoting the fundamental understanding aggregate materials and their new functions. Particularly, solution structure conjugated polymers can be hardly resolved without deuteration. However, studies about isotopic effects casting solvents on aggregated structures photovoltaic bulk‐heterojunction blends deficient. Here, impact deuterated thermal behavior, structures, device performance is clearly delineated first time by multiple techniques. enhanced π‐π stacking order highly relevant to relatively poor miscibility with solvents. Benefiting from higher crystallinity optimized morphology processed films, devices able achieve better efficiency notable improvement in stability. Our results highlight polymer systems reveal potential innovative approaches fabricate thermally stable high‐efficiency solar cells.

Язык: Английский

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Non‐Covalent Interactions between Polyvinyl Chloride and Conjugated Polymers Enable Excellent Mechanical Properties and High Stability in Organic Solar Cells

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(44)

Опубликована: Сен. 13, 2023

The incorporation of insulating polymers into conjugated has been widely explored as a strategy to improve mechanical properties flexible organic electronics. However, phase separation due the immiscibility these limited their effectiveness. In this study, we report discovery multiple non-covalent interactions that enhances miscibility between and polymers, resulting in improved properties. Specifically, have added polyvinyl chloride (PVC) polymer PM6 observed significant increase solution viscosity, indicative favorable two polymers. This phenomenon rarely other insulating/conjugated composites. Thin films PM6/PVC exhibit much-improved crack-onset strain 19.35 %, compared 10.12 % for pristine films. Analysis reveal "cyclohexyl-like" structure formed through dipole-dipole hydrogen bonding PVC acted cross-linking site thin films, leading Moreover, blend demonstrated excellent thermal bending stability when applied an electron donor solar cells. These findings provide new insights can be utilized enhance may potential applications

Язык: Английский

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Real‐Time Probing and Unraveling the Morphology Formation of Blade‐Coated Ternary Nonfullerene Organic Photovoltaics with In Situ X‐Ray Scattering

Advanced Functional Materials, Год журнала: 2023, Номер 33(14)

Опубликована: Янв. 17, 2023

Abstract Characterizing the bulk heterojunction (BHJ) morphology of active layer is essential for optimizing blade‐coated organic solar cells (OSCs). Here, evolution a highly efficient ternary polymer:nonfullerene blend PM6:N3:N2200 under different blade coating conditions probed in real‐time by situ synchrotron X‐ray scattering and ultraviolet‐visible (UV‐vis) spectroscopy. Besides, films at detailed ex microscopic imaging. The film exhibited optimized morphology, such as superior molecular stacking structure appropriate phase separation structure, boosted photovoltaic performance binary blend, adding second polymer component to host system can balance nucleation crystallization polymers small molecules, facilitating rearrangement perfect crystallization. Both blends obtained properties medium speed, mainly attributed movement molecules long aggregation stage. These findings help understand formation drying provide guidance OSCs.

Язык: Английский

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Recent Progress of All Polymer Solar Cells with Efficiency Over 15%

Solar RRL, Год журнала: 2023, Номер 7(12)

Опубликована: Апрель 25, 2023

All polymer solar cells (APSCs) composed of polymeric donors and acceptors have attracted tremendous attention due to their unique merits mechanical flexibility good film formation property, which exhibit promising applications on wearable flexible stretchable devices. Over 18% power conversion efficiency APSCs has been achieved benefiting from the continuous development functional layer materials innovation device engineering evolution. In this review, that enabled recent progress efficient are outlined, including typical donors, emerging based polymerizing small molecule strategy, interfacial as well rational design rules for corresponding materials. From perspective evolution, deposition treatment techniques introduced, play a vital role in manipulating morphology through properly tuning vertical component distribution aggregation behavior polymers. Meanwhile, ternary strategy is also discussed an effective method promoting durability, stability, thickness‐insensitive characteristics facing future applications. The challenges outlooks filed finally proposed developing high‐performance APSCs.

Язык: Английский

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