Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(30), P. 19039 - 19051
Published: Jan. 1, 2024
The development of elastomer-containing photoactive block copolymers with regulated rigid-block lengths results in organic solar cells high power conversion efficiency (17.3%) and mechanical robustness (toughness = 1.8 MJ m −3 ).
Language: Английский
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
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 21, 2025
Abstract Regulating blend morphology in photoactive films is essential for enhancing the power conversion efficiency (PCE) of organic solar cells (OSCs). However, achieving precise control over remains a significant challenge due to difficulty simultaneously controlling thermodynamic and kinetic parameters that govern formation. In this study, series new small‐molecule acceptors (SMAs) employing dual side chain functionalization strategy designed incorporates trifluoromethyl (CF 3 ) phenyl (Ph) groups: SMA‐CH , SMA‐CF (with CF group), SMA‐Ph‐CF both groups). This approach successfully enables delicate tuning development high‐performance OSCs (PCE = 18.5%). enhances compatibility SMAs with hydrophobic D18 polymer donor, promoting formation intermixed donor/acceptor domains efficient charge generation. Meanwhile, improves SMA aggregation crystallinity, facilitating strong interconnected assembly transport. As result, binary based on D18:SMA‐Ph‐CF achieve significantly higher PCE 18.5%, compared 14.3% D18:SMA‐CH 16.5% D18:SMA‐CF OSCs. These results highlight importance optimizing
Language: Английский
Citations
0
Journal of Molecular Structure, Journal Year: 2025, Volume and Issue: unknown, P. 142443 - 142443
Published: April 1, 2025
Language: Английский
Citations
0
ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(35), P. 46332 - 46340
Published: Aug. 23, 2024
Due to the slow diffusion of photovoltaic molecules, in particular, small-molecule acceptors (SMAs), under light and heating, morphology active layer organic solar cells (OSCs) prefers deviate from favorably metastable status, leading challenge stability during long-term operation. Employing materials with a high glass transition temperature (Tg) as third component suppress molecular is an efficient method achieve balance efficiency OSCs. Herein, dimerized acceptor denoted F6D synthesized by introducing polyfluoride moiety linker enhance Tg. Benefitting rational design, not only exhibits higher Tg, complementary absorption, cascade energy levels host polymer donor PM6 SMA Y6 but also has excellent miscibility multiple intermolecular interactions Y6. As result, champion power conversion 17.52% achieved optimal PM6:Y6:F6D-based device. More importantly, ternary device superior continuous heating lighting compared binary
Language: Английский
Citations
1
Macromolecular Rapid Communications, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 28, 2024
Abstract Stretchable organic solar cells (SOSCs) have advanced rapidly in the last few years as power sources required to realize portable and wearable electronics become available. Through rational material device engineering, SOSCs are now able retain their photovoltaic performance even when subjected repeated mechanical deformations. However, reconciling a high efficiency an excellent stretchability is still huge challenge, development of has lagged far behind that flexible OSCs. In this perspective article, recent strategies for imparting robustness while maintaining conversion reviewed, with emphasis on molecular design active layers. Initially, overview approaches research advances provided improving layers, including donors, acceptors, single‐component materials. Subsequently, another common strategy regulating properties SOSCs, namely multi‐component system, summarized analyzed. Lastly, considering its infancy, current challenges future directions pointed out.
Language: Английский
Citations
1
ACS Materials Letters, Journal Year: 2024, Volume and Issue: unknown, P. 4710 - 4718
Published: Sept. 18, 2024
Language: Английский
Citations
1
Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(30), P. 19039 - 19051
Published: Jan. 1, 2024
The development of elastomer-containing photoactive block copolymers with regulated rigid-block lengths results in organic solar cells high power conversion efficiency (17.3%) and mechanical robustness (toughness = 1.8 MJ m −3 ).
Language: Английский
Citations
0