Unraveling the Solution Aggregation Structures and Processing Resiliency of High‐Efficiency Organic Photovoltaic Blends DOI
Mengyuan Gao, Chunlong Sun, Yiwen Li

et al.

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

Published: Aug. 7, 2024

The solution aggregation structure of conjugated polymers is crucial to the morphology and resultant optoelectronic properties organic electronics considerable interest in field. Precise characterizations structures photovoltaic (OPV) blends their temperature-dependent variations remain challenging. In this work, three representative high-efficiency OPV using small-angle X-ray/neutron scattering are systematically probed. Three cases processing resiliency elucidated state-of-the-art blends. exceptional PBQx-TF can be attributed minimal changes multiscale at elevated temperatures. Importantly, a new parameter, percentage acceptors distributed within polymer aggregates (Ф), for first time blend solution, establishes direct correlation between Ф performance quantified. device well correlated with Kuhn length cylinder related L

Language: Английский

A Pyrene‐Fused Dimerized Acceptor for Ternary Organic Solar Cells with 19% Efficiency and High Thermal Stability DOI

Xucong Liu,

Zhou Zhang, Chao Wang

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 63(1)

Published: Nov. 21, 2023

A pyrene-fused dimerized electron acceptor has been successfully synthesized and subsequently incorporated as the third component in ternary organic solar cells (OSCs). Diverging from traditional acceptors with a linear configuration, this novel displays distinctive "butterfly-like" structure, comprising two Y-acceptors wings fused pyrene-based backbone. The extended π-conjugated backbone electron-donating nature of pyrene enable new to show low solubility, elevated glass transition temperature (Tg ), low-lying frontier energy levels. Consequently, seamlessly integrates into OSCs, enhancing transporting properties, reducing non-radiative voltage loss, elevating open-circuit voltage. These merits have enabled OSCs an exceptional efficiency 19.07%, marked improvement compared 17.6% attained binary OSCs. More importantly, high Tg exhibited by helps stabilize morphology photoactive layer thermal-treated at 70 °C, retaining 88.7% over 600 hours. For comparison, experience decline 73.7% after same duration. results indicate that design incorporation unit is promising strategy development for

Language: Английский

Citations

59
Halogenation Strategy of Thiophene Derived Solvent Additives Enables Optimized Morphology for Organic Solar Cells with 19.17% Efficiency DOI

Wenyan Su,

Xuming Zhou,

Ze‐Fan Yao

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(19)

Published: Jan. 14, 2024

Abstract As simple and versatile tools, additives have been widely used to refine active layer morphology played a crucial role in boosting the power conversion efficiency (PCE) of organic solar cells (OSCs). Herein, three novel solvent named Th‐FSi, Th‐ClSi, Th‐BrSi with same backbone 2,5‐bis(trimethylsilyl)thiophene are designed synthesized by substituting different halogens fluorine, chlorine, bromine, respectively. Notably, Th‐ClSi exhibits more significant dipole moment engages non‐covalent interactions small‐molecule acceptor (SMA) L8‐BO, which slight adjustments intermolecular interaction, crystallinity, molecular packing PM6:L8‐BO layer. Consequently, OSCs incorporating outperform their Th‐FSi counterparts photo‐capturing, reduced energy loss, superior exciton dissociation, charge transfer properties, out‐coming yields an enhanced PCE 18.29%. Moreover, integrating near‐infrared absorbing SMA (BTP‐eC9) guest into matrix, absorption spectrum span 880–930 nm, resultant ternary achieve commendable 19.17%, ranking among highest efficiencies reported date is expanded. These findings underscore promise halogenated thiophene‐based as potent avenue for morphological fine‐tuning consequent enhancement OSCs.

Language: Английский

Citations

36
Advances in Stretchable Organic Photovoltaics: Flexible Transparent Electrodes and Deformable Active Layer Design DOI
Wei Song,

Qinrui Ye,

Zhenyu Chen

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(37)

Published: May 30, 2024

Stretchable organic photovoltaics (OPVs) have attracted significant attention as promising power sources for wearable electronic systems owing to their superior robustness under repetitive tensile strains and good compatibility. However, reconciling a high power-conversion efficiency reasonable flexibility is tremendous challenge. In addition, the development of stretchable OPVs must be accelerated satisfy increasing requirements niche markets mechanical robustness. OPV devices can classified either structurally or intrinsically stretchable. This work reviews recent advances in OPVs, including design mechanically robust transparent electrodes, photovoltaic materials, devices. Initially, an overview characteristics research progress areas provided. Subsequently, into flexible electrodes that directly affect performances summarized analyzed. Overall, this review aims provide in-depth understanding intrinsic properties highly efficient deformable active while also emphasizing advanced strategies simultaneously improving performance layer, material design, multi-component settings, structural optimization.

Language: Английский

Citations

32
All-polymer solar cells with 19% efficiency via introducing pincer-shaped non-covalent bond interactions DOI
Jianxiao Wang, Yonghai Li, Chenyu Han

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(12), P. 4216 - 4227

Published: Jan. 1, 2024

Pincer-shaped non-covalent bond interactions are introduced between a small-molecule additive and polymer acceptor, effectively improving the photovoltaic performance mechanical stability of all-polymer solar cells.

Language: Английский

Citations

29
Dimerized Acceptors with Conjugate‐Break Linker Enable Highly Efficient and Mechanically Robust Organic Solar Cells DOI
Yafei Ding,

Waqar Ali Memon,

Di Zhang

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(22)

Published: March 26, 2024

Abstract Designing new acceptors is critical for intrinsically stretchable organic solar cells (IS‐OSCs) with high efficiency and mechanical robustness. However, nearly all polymer exhibit limited high‐performance small molecular are very brittle. In this regard, we select thienylene‐alkane‐thienylene (TAT) as the conjugate‐break linker synthesize four dimerized by regulation of connecting sites halogen substitutions. It found that substitutions considerably impact overall electronic structures, aggregation behaviors, charge transport properties. Benefiting from optimization structure, acceptor exhibits rational phase separation within blend films, which significantly facilitates exciton dissociation while effectively suppressing recombination processes. Consequently, FDY‐m‐TAT‐based rigid OSCs render highest power conversion (PCE) 18.07 % among reported containing linker. Most importantly, IS‐OSCs achieve PCE (14.29 %) remarkable stretchability (crack‐onset strain [COS]=18.23 %), surpassing Y6‐based counterpart (PCE=12.80 COS=8.50 %). To sum up, these findings demonstrate linkers have immense potential in developing highly efficient mechanically robust OSCs.

Language: Английский

Citations

25
Three‐in‐One Strategy Enables Single‐Component Organic Solar Cells with Record Efficiency and High Stability DOI
Yujun Cheng, Bin Huang,

Qilong Mao

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(19)

Published: Feb. 7, 2024

Abstract Single‐component organic solar cells (SCOSCs) with covalently bonding donor and acceptor are becoming increasingly attractive because of their superior stability over traditional multicomponent blend (OSCs). Nevertheless, the efficiency SCOSCs is far behind state‐of‐the‐art OSCs. Herein, by combination advantages three‐component single‐component devices, this work reports an innovative three‐in‐one strategy to boost performance SCOSCs. In strategy, three independent components (PM6, D18, PYIT) linked together create a new active layer based on ternary conjugated block copolymer (TCBC) PM6‐D18 ‐b‐ PYIT facile polymerization. Precisely manipulating component ratios in polymer chains able broaden light utilization, promote charge dynamics, optimize, stabilize film morphology, contributing simultaneously enhanced Ultimately, PYIT‐based device exhibits power conversion (PCE) 14.89%, which highest reported Thanks aggregation restriction each chain entanglement system, SCOSC displays significantly higher than corresponding two‐component (PM6‐D18:PYIT) (PM6:D18:PYIT). These results demonstrate that promising for developing stability.

Language: Английский

Citations

21
Tethered Trimeric Small‐molecular Acceptors through Aromatic‐core Engineering for Highly Efficient and Thermally Stable Polymer Solar Cells DOI
Bowen Chang, Yuegang Zhang, Cen Zhang

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(15)

Published: Feb. 7, 2024

Polymer solar cells (PSCs) rely on a blend of small molecular acceptors (SMAs) with polymer donors, where thermodynamic relaxation SMAs poses critical concerns operational stability. To tackle this issue, tethered SMAs, wherein multiple SMA-subunits are connected to the aromatic-core via flexible chains, proposed. This design aims an elevated glass transition temperature (T

Language: Английский

Citations

21
Sequentially Deposited Elastomer‐Based Ternary Active Layer for High‐Performance Stretchable Organic Solar Cells DOI
Weibing Tang, Zicheng Ding,

Yueling Su

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(22)

Published: Feb. 6, 2024

Abstract Stretchable organic solar cells (OSCs) with high power conversion efficiency and good mechanical deformation are promising as sources for wearable electronics. However, synergistic improvement of both photovoltaic ductility is challenging state‐of‐the‐art polymer donor: non‐fullerene acceptor (NFA)‐based active layers. Here, a high‐performance stretchable OSC 16.54% crack‐onset strain 26.38% by synergetic optimization film microstructure sequentially deposited ternary layer consisting donor poly[2,6‐(4,8‐bis(5‐(2‐ethylhexyl‐3‐fluoro)thiophen‐2‐yl)‐benzo[1,2‐b:4,5‐b']dithiophene))‐alt‐5,5'‐(5,8‐bis(4‐(2‐butyloctyl)thiophen‐2‐yl)dithieno[3',2':3,4;2'',3'':5,6]benzo[1,2‐c][1,2,5]thiadiazole)] (D18), an NFA 2,2'‐((2Z,2'Z)‐((12,13‐bis(2‐ethylhexyl)‐3,9‐diundecyl‐12,13‐dihydro‐[1,2,5]thiadiazolo[3,4‐e]thieno[2'',3'':4',5']thieno[2',3':4,5]pyrrolo[3,2‐g]thieno[2',3':4,5]thieno[3,2‐b]indole‐2,10‐diyl)bis(methanylylidene)bis(5,6‐difluoro‐3‐oxo‐2,3‐dihydro‐1H‐indene‐2,1‐diylidene))dimalonitrile) (Y6), elastomer polystyrene‐block‐poly(ethylene‐ran‐butylene)‐block‐polystyrene (SEBS) reported. Adding low‐content solvent additive para‐xylene into main carbon disulfide induces high‐density fibers networks low crystallinity in bottom D18 layer, this further suppresses the large phase separation between Y6 SEBS top layer. Moreover, incorporating solid 1,3‐dibromo‐5‐chlorobenzene better compatibility can promote dispersions to form smaller ordered domains matrix. Finally, optimal shows significantly higher stretchability, resulting efficiency‐stretchability factor 4.36%, which among best values OSCs.

Language: Английский

Citations

20
Simultaneous enhancement of efficiency, stability and stretchability in binary polymer solar cells with a three-dimensional aromatic-core tethered tetrameric acceptor DOI Creative Commons
Yang Bai, Saimeng Li, Qingyuan Wang

et al.

National Science Review, Journal Year: 2025, Volume and Issue: 12(3)

Published: Jan. 21, 2025

Polymer solar cells (PSCs) leverage blend films from polymer donors and small-molecule acceptors (SMAs), offering promising opportunities for flexible power sources. However, the inherent rigidity crystalline nature of SMAs often embrittle donor in constructed bulk heterojunction structure. To address this challenge, we improved stretchability by designing synthesizing a tethered giant tetrameric acceptor (GTA) with increased molecular weight that promotes entanglement individual SMA units. The key to design is using tetraphenylmethane as linking core create three-dimensional high C2 symmetry structure, which successfully regulates their aggregation relaxation behavior. With GTA acceptor, its PM6 exhibit significantly stretchability, nearly 150% increase crack onset strain value compared PM6:Y6. Moreover, PSCs achieve an efficiency up 18.71% demonstrate outstanding photostability, maintaining >90% initial conversion after operating over 1000 hours. Our findings specifically aligning weights more closely those counterparts, can enhanced without compromising morphological stability or device efficiency.

Language: Английский

Citations

6
Perspective on Flexible Organic Solar Cells for Self-Powered Wearable Applications DOI

Juan Zhu,

Jinfeng Xia,

Yaowen Li

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 15, 2025

The growing advancement of wearable technologies and sophisticated sensors has driven the need for environmentally friendly reliable energy sources with robust mechanical stability. Flexible organic solar cells (OSCs) have become promising substitutes traditional solutions thanks to their remarkable flexibility high power conversion efficiency (PCE). These unique properties allow flexible OSCs seamlessly integrate diverse devices substrates, making them an excellent choice powering various electronic by efficiently harvesting energy. This review summarizes recent achievements in from perspective self-powered applications. It discusses advancements materials, including substrates transparent electrodes, evaluates performance criteria, compares PCEs rigid counterparts. Subsequently, novel applications are explored. Finally, a summary perspectives on current challenges obstacles facing wearables provided, aiming inspire further research toward practical implementations.

Language: Английский

Citations

2