Dyes and Pigments, Journal Year: 2025, Volume and Issue: unknown, P. 112892 - 112892
Published: May 1, 2025
Language: Английский
Science China Materials, Journal Year: 2025, Volume and Issue: unknown
Published: March 14, 2025
Language: Английский
Citations
0
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 3, 2025
A volatile solid additive strategy, which can effectively optimize the morphology of photoactive layer with an ideal domain size and purity, has emerged as a promising approach to improve photovoltaic performance organic solar cells (OSCs). However, precise role additives in modulating charge exciton dynamics, especially recombination process, remains not fully understand. In this study, additive, 1,4-diiodo-2,5-dimethoxybenzene (DIDOB), is developed OSCs conduct comprehensive investigation into its effect on process. As result, PM6:L8-BO-X-based binary OSC processed DIDOB achieves excellent efficiency 19.75% remarkable fill factor 81.9%, owing optimal fiber network morphology, tighter ordered molecular packing, well suppression both bimolecular geminate recombination. Notably, exhibits broad universality other non-fullerene acceptor-based OSCs. Impressively, D18:PM6:L8-BO-based ternary device yielded 20.11% (certified 20.03%). This work highlights process within active provides insights for further development
Language: Английский
Citations
0
ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown
Published: April 7, 2025
Vertical phase-separated active layer morphology is essential for organic solar cells (OSCs), which can be effectively achieved through layer-by-layer (LbL) processing, enabling independent optimization of donor and acceptor layers. Here, we present a novel strategy to optimize the D18/L8-BO-based OSCs by incorporating polyfluoroquinoxaline-type polymer additives. Three quinoxaline-based polymers with varying fluorination contents, namely, P2FQx, P3FQx, P4FQx, were synthesized evaluated. Although these showed limited performance as standalone materials in bulk heterojunction (BHJ) devices, their use additives LbL-OSCs significantly enhanced device efficiency. These promoted D18 aggregation, L8-BO penetration, facilitated formation vertically interpenetrating donor/acceptor network. Among additives, P2FQx demonstrated best performance, an optimized achieving champion power conversion efficiency (PCE) 20.13% well high fill factor (FF) 80.13%. Our results highlight potential rationally designed address morphology-related challenges provide pathway further development high-performance scalable photovoltaic devices.
Language: Английский
Citations
0
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 10, 2025
Abstract Molecular orientation stands as the quintessential hallmark of conjugated self‐assembled monolayers (SAMs), which have recently catalyzed noteworthy advancements in organic photovoltaics (OPVs). Nevertheless, an unambiguous understanding these directional arrangements and their impact on optoelectronic properties remains elusive. To address this issue, herein three SAMs with representative orientations, i.e., edge‐on (BCZ‐1), tilt‐on (4PACz) face‐on (BCZ‐2) are meticulously designed. These orientations been rigorously validated by sum frequency generation vibrational spectroscopy first‐principles calculations. Remarkably, unequivocal correlation between molecular device performance is discerned. Particularly, oriented BCZ‐1 exhibits largest dipole moment normal to electrode, accompanied a dense uniform coverage. features collectively contribute its strongest work function increment for ultra‐fast hole extraction minimum interfacial carrier recombination. As result, champion power conversion efficiency 19.93% achieved devices based D18:L8‐BO active layer, representing one highest values reported binary bulk heterojunction OPVs. Besides, shows great potential practical applications due superior up‐scalability enhanced shelf‐stability. Overall, offers in‐depth insights into behaviors SAMs, opening new avenues unlock
Language: Английский
Citations
0
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 26, 2025
Abstract Recently, benzene‐based solid additives (BSAs) have emerged as pivotal components in modulating the morphology of blend film organic solar cells (OSCs). However, since almost all substituents on BSAs are weak electron‐withdrawing groups and contain halogen atoms, study with non‐halogenated strong has received little attention. Herein, an additive strategy is proposed, involving incorporation benzene ring. An effective BSA, 4‐nitro‐benzonitrile (NBN), selected to boost efficiency devices. The results demonstrate that NBN‐treated device exhibits enhanced light absorption, superior charge transport performance, mitigated recombination, more optimal compared additive‐free OSC. Consequently, D18:BTP‐eC9+NBN‐based binary D18:L8‐BO:BTP‐eC9+NBN‐based ternary OSC processed by solvent achieved outstanding efficiencies 20.22% 20.49%, respectively. Furthermore, universality NBN also confirmed different active layer systems. In conclusion, this work demonstrates introduction electron‐absorbing moieties ring a promising approach design BSAs, which can tune achieve highly efficient devices, certain guiding significance for development BSAs.
Language: Английский
Citations
0
Macromolecular Chemistry and Physics, Journal Year: 2025, Volume and Issue: unknown
Published: April 28, 2025
Abstract Organic solar cells (OSCs) are developing as a crucial technology for sustainable energy, attaining power conversion efficiencies (PCEs) of over 20%. The morphology the active layer is essential in influencing PCE, but its exact manipulation difficult because complex interactions between donor and acceptor molecules. molecular weight ( M w ) polymers parameter that significantly affects morphological development, including domain size, purity, crystallinity, orientation. Here trade‐offs regulation examined, emphasizing high‐ improve stability crystallinity may hinder phase separation. In contrast, low‐ promote finer separation at cost mechanical integrity. Moreover, current achievements synthesized to clarify methodologies optimizing achieve balanced features, enhance design, maximize potential OSCs. These insights facilitate resolution existing difficulties advancements OSCs toward useful applications.
Language: Английский
Citations
0
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: May 7, 2025
Abstract Polymer solar cells (PSCs) rely on blends of small‐molecule acceptors (SMAs) and polymer donors, but the thermodynamic relaxation SMAs requires an oligomeric approach to enhance operational stability. However, high‐efficiency devices often depend expensive synthesis costly posing a significant barrier achieving sustainable renewable energy. Here, challenge is addressed through thermodynamically derived compatibility giant with low‐cost donor PTQ10. This achieved by strategically employing conjugated side chains modulate dimerize acceptors, thereby precisely tuning their properties optimize compatibility. Our synthetic route avoids toxic reagents, halogenated solvents, harsh conditions. The dimer (DYBT) incorporating n ‐type linker enhances crystallinity, absorption, intramolecular superexchange coupling compared its p counterpart, achieves device efficiency 19.53%. Considering efficiency, stability, material cost, potential cost per kilowatt for PTQ10:DYBT 0.10 $ kW −1 , while most systems exceed 10 . These findings offer valuable insights cost‐effective well pair donors reduce overall photo‐active layer durable
Language: Английский
Citations
0
Science China Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 30, 2025
Language: Английский
Citations
0
Dyes and Pigments, Journal Year: 2025, Volume and Issue: unknown, P. 112892 - 112892
Published: May 1, 2025
Language: Английский
Citations
0