Science China Materials, Journal Year: 2024, Volume and Issue: 67(12), P. 3917 - 3924
Published: Oct. 30, 2024
Language: Английский
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(29)
Published: Feb. 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.
Language: Английский
Citations
23
Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 16, 2025
Abstract Intrinsically stretchable organic photovoltaics (IS‐OPVs) are emerging as power sources for wearable technologies, enabling seamless integration into flexible and systems. A key feature of IS‐OPVs is the potential increased output photoactive area expands during stretching. However, current mechanical performance stability still fall short meeting demands practical applications. To overcome this limitation, study introduces, first time, a polymer:gel blend system highly electron transporting layer (ETL), which significantly enhances both IS‐OPVs. This novel ETL plays pivotal role in dissipating stress protecting brittle underlying layers. By incorporating ETL, device stretchability reinforced by introducing thereby maintaining initial conversion efficiency under 20% strain. As result, maximum substantially increases 23%, from 0.28 to 0.35 mW, large strain, while devices with conventionally ETLs caused 33% reduction output. thus offers pathway toward durable efficient photovoltaics.
Language: Английский
Citations
1
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(41)
Published: July 3, 2024
Abstract The dimerization of small molecule acceptors (SMAs) is a promising strategy for enhancing the long‐term stability and power conversion efficiency (PCE) organic solar cells (OSCs). However, reported DSMAs are primarily limited to end‐linked molecular configurations, highlighting need further exploration various dimer architectures. Herein, development two distinct core‐linked dimerized SMAs (DYF‐V DYF‐E) with tailored linker structures (vinylene ethynyl, respectively), achieving high‐performance OSCs (PCE = 18.53%). Interestingly, subtle change in results markedly different properties photovoltaic performances acceptors. DYF‐E an ethynyl exhibits more twisted backbone conformation mitigated aggregation property compared DYF‐V, inducing desirable blend morphologies polymer donor including high crystallinity, face‐on oriented packing structures, well‐intermixed domains. Thus, DYF‐E‐based exhibit PCE (17.02%), which significantly outperforms DYF‐V‐based 9.98%). Furthermore, ternary based on achieve higher 18.53%. this study highlights significance selecting appropriate producing OSCs.
Language: Английский
Citations
8
Interdisciplinary materials, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 17, 2024
Abstract Stretchable conjugated polymer films are pivotal in flexible and wearable electronics. Despite significant advancements film stretchability through molecular engineering multicomponent blending, these often exhibit limited elastic ranges reduced carrier mobilities under large strain or after cyclic stretching. These limitations hinder their application Therefore, it is imperative to reveal the mechanical fatigue mechanisms incorporate multiple energy dissipation strategies enhance deformation electrical performance of stretched films. In this review, we begin by introducing typical behaviors Subsequently, discuss multiscale structural evolution various stretching conditions based on both in‐situ ex‐situ characterizations. This analysis further related diverse mechanisms. We next establish correlation between strain‐induced microstructure After that, propose develop highly constructing stable crosslinks promoting dynamics low‐crystalline Finally, highlight future opportunities for high‐performance mechanically devices stretchable
Language: Английский
Citations
4
Progress in Polymer Science, Journal Year: 2024, Volume and Issue: unknown, P. 101899 - 101899
Published: Oct. 1, 2024
Language: Английский
Citations
4
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
Citations
4
Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 27, 2025
Abstract Intrinsically stretchable organic solar cells (IS‐OSCs) are emerging as promising candidates for powering next‐generation wearable electronics. However, developing molecular design strategies to achieve both high efficiency and mechanical robustness in IS‐OSCs remains a significant challenge. In this work, we present novel approach by synthesizing dimerized electron acceptor (DY‐FBrL) that enables rigid OSCs with power conversion (PCE) of 18.75 % crack‐onset strain (COS) 18.54 %. The enhanced PCE stretchability DY‐FBrL‐based devices attributed its extended π‐conjugated backbone elongated side chains. Furthermore, introduce an innovative polymerized (PDY‐FL), synthesized via the polymerization DY‐FBrL. While PDY‐FL‐based exhibit slightly lower 14.13 %, they significantly higher COS 23.45 representing one highest PCEs reported acceptors containing only flexible linkers. Consequently, fabricated using DY‐FBrL PDY‐FL notable 14.31 11.61 respectively. Additionally, device improves progressively from Y6 (strain at 80% =11 %), =23 =31 %). This study presents strategy tailoring structures, offering new pathway develop high‐performance properties.
Language: Английский
Citations
0
Angewandte Chemie, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 26, 2025
Abstract Intrinsically stretchable organic solar cells (IS‐OSCs) are emerging as promising candidates for powering next‐generation wearable electronics. However, developing molecular design strategies to achieve both high efficiency and mechanical robustness in IS‐OSCs remains a significant challenge. In this work, we present novel approach by synthesizing dimerized electron acceptor (DY‐FBrL) that enables rigid OSCs with power conversion (PCE) of 18.75 % crack‐onset strain (COS) 18.54 %. The enhanced PCE stretchability DY‐FBrL‐based devices attributed its extended π‐conjugated backbone elongated side chains. Furthermore, introduce an innovative polymerized (PDY‐FL), synthesized via the polymerization DY‐FBrL. While PDY‐FL‐based exhibit slightly lower 14.13 %, they significantly higher COS 23.45 representing one highest PCEs reported acceptors containing only flexible linkers. Consequently, fabricated using DY‐FBrL PDY‐FL notable 14.31 11.61 respectively. Additionally, device improves progressively from Y6 (strain at 80% =11 %), =23 =31 %). This study presents strategy tailoring structures, offering new pathway develop high‐performance properties.
Language: Английский
Citations
0
Polymer science & technology., Journal Year: 2025, Volume and Issue: unknown
Published: March 31, 2025
Donor–acceptor (D−A) conjugated polymers are promising materials for organic transistors including field-effect (OFETs) and electrochemical (OECTs). The aggregated structure of D−A polymer films, which strongly depends on the crystallization process, is crucial device performance. However, complicated during solution processing, optimal film various in different applications. Therefore, it significantly important to reveal relationship between processing conditions resulting structures. This review provides a systematic understanding how control films from fundamental mechanisms crystallization. We first discuss possible nucleation growth based traditional theories or models current findings. Then, recent progress controlling OFETs OECTs reviewed. generally adopt chain-extended due their rigid backbone, makes homogeneous difficult. A common strategy manipulate heterogeneous process by tuning pre-aggregation. Besides, effect rate also discussed. Finally, concise summary provided, followed some challenges films.
Language: Английский
Citations
0
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
Citations
0