Science China Chemistry, Год журнала: 2024, Номер unknown
Опубликована: Дек. 25, 2024
Язык: Английский
Materials Science and Engineering R Reports, Год журнала: 2025, Номер 164, С. 100977 - 100977
Опубликована: Март 18, 2025
Язык: Английский
Процитировано
2
ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown
Опубликована: Апрель 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.
Язык: Английский
Процитировано
2
Macromolecular Rapid Communications, Год журнала: 2025, Номер unknown
Опубликована: Янв. 15, 2025
Simultaneous improvement in power conversion efficiency (PCE) and device stability is very important for organic solar cells (OSCs). Herein, oligothiophene-based polymer W19 with excellent solvent resistance exploited as a thin layer to optimize the active morphology then stability. Polymer possesses simple skeleton of trifluromethyl-substituted dithienoquinoxaline quaterthiophene, whose shows suitable energy level, low surface energy, strong interchain aggregation, leading outstanding hole transport ability. Optimized vertical separation alleviates trap state density loss, improves transfer dynamics, balances charge transport, thus maximizing open-circuit voltage, short-circuit current density, fill factor simultaneously. A high PCE 19.70% achieved treated devices. Noticeably, OSCs retained 87% its initial after continuous illumination 800 h, which higher than that 74% control. Large area devices 1 4 cm2 can achieve efficiencies 17.36% 14.46%, respectively. This work highlights ability has great potential further improve photostability OSCs.
Язык: Английский
Процитировано
1
Angewandte Chemie International Edition, Год журнала: 2025, Номер unknown
Опубликована: Март 10, 2025
Advancements in narrow bandgap organic small molecule acceptors (SMAs) has promoted solar cell (OSC) efficiencies beyond 20%. Achieving this milestone necessitates precise control over the active layer morphology, particularly its crystallinity and phase distribution, to optimize light absorption, charge transport, suppress recombination. However, controlling SMA morphology remains a significant challenge due their strong aggregation tendency. Existing methods, including high-temperature annealing, introducing high boiling point additives, frequently yield disordered polymorphs with limited scalability. Here, we report novel approach of utilizing 4-bromochlorobenzene as volatile solid additive induce formation highly ordered polymorph BTP-eC9 through mild annealing at 60 °C. This marks first demonstration such an polymorph, exhibiting optical properties comparable ideal crystals, enhanced anisotropy, refractive index, extinction coefficients. The specific further enables well-organized PM6 donor arrangement, establishing optimal bicontinuous network morphology. Consequently, OSCs based on PM6:BTP-eC9 achieve power conversion efficiency 19.53%, which increases 20.32% addition antireflection layer. work provides scalable effective strategy for enhancing OSC performance highlights critical role polymorphism optimizing photovoltaic performance.
Язык: Английский
Процитировано
1
Advanced Energy Materials, Год журнала: 2024, Номер unknown
Опубликована: Ноя. 26, 2024
Abstract This 5th annual “ Emerging PV Report” highlights the latest advancements in performance of emerging photovoltaic (e‐PV) devices across various e‐PV research areas, as documented peer‐reviewed articles published since August 2023. Updated graphs, tables, and analyses are provided, showcasing several key parameters, including power conversion efficiency, open‐circuit voltage, short‐circuit current, fill factor, light utilization stability test energy yield. These parameters presented functions bandgap average visible transmittance for each technology application contextualized using benchmarks such detailed balance efficiency limit.
Язык: Английский
Процитировано
6
Journal of Energy Chemistry, Год журнала: 2024, Номер unknown
Опубликована: Ноя. 1, 2024
Язык: Английский
Процитировано
4
Advanced Functional Materials, Год журнала: 2024, Номер unknown
Опубликована: Дек. 26, 2024
Abstract Cathode interface layers (CILs) are crucial for optimizing the power conversion efficiency (PCE) and stability of organic solar cells (OSCs). Two small molecule CILs, PDINN‐TS PDINN‐BS developed, by modifying bay sites perylene diimide (PDI) with thieno [3,2‐b] thiophene 2,2′‐bithiophene, separately. Due to better electron‐donating capacity longer conjugate length exhibits a stronger self‐doping effect superior compatibility compared PDINN‐TS. Consequently, in PM6: Y6 OSCs, achieved an elevated PCE 16.95%, surpassing 16.66%. Meanwhile, excellent universality. When employing BTP‐eC9 PM6:L8‐BO systems, PDINN‐BS‐based device yielded 18.02% 18.95%, outperforming 17.51% 18.38%, respectively. Furthermore, tests revealed that after being stored glovebox 1500 h, retained 90% its pristine PCE, 86% showed 80% decay (T 80 ) 150 h air, 200 at 70 °C heating N 2 , 500 under 1 sun immersion, 120, 130, 380 This demonstrates displayed complicated environment. this study provides significative guidance exploitation high‐performance high‐stability OSCs.
Язык: Английский
Процитировано
3
Angewandte Chemie, Год журнала: 2025, Номер unknown
Опубликована: Март 10, 2025
Abstract Advancements in narrow bandgap organic small molecule acceptors (SMAs) has promoted solar cell (OSC) efficiencies beyond 20%. Achieving this milestone necessitates precise control over the active layer morphology, particularly its crystallinity and phase distribution, to optimize light absorption, charge transport, suppress recombination. However, controlling SMA morphology remains a significant challenge due their strong aggregation tendency. Existing methods, including high‐temperature annealing, introducing high boiling point additives, frequently yield disordered polymorphs with limited scalability. Here, we report novel approach of utilizing 4‐bromochlorobenzene as volatile solid additive induce formation highly ordered polymorph BTP‐eC9 through mild annealing at 60 °C. This marks first demonstration such an polymorph, exhibiting optical properties comparable ideal crystals, enhanced anisotropy, refractive index, extinction coefficients. The specific further enables well‐organized PM6 donor arrangement, establishing optimal bicontinuous network morphology. Consequently, OSCs based on PM6:BTP‐eC9 achieve power conversion efficiency 19.53%, which increases 20.32% addition antireflection layer. work provides scalable effective strategy for enhancing OSC performance highlights critical role polymorphism optimizing photovoltaic performance.
Язык: Английский
Процитировано
0
Advanced Materials, Год журнала: 2025, Номер unknown
Опубликована: Апрель 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
Язык: Английский
Процитировано
0
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Апрель 17, 2025
Abstract It is necessary to employ high‐boiling solvents for the fabrication of large‐area organic solar cells (OSCs). However, controlling morphology achieve suitable phase separation high efficiency challenging when are used. In this study, HD‐1, a small molecular donor introduced, into PM6:BO‐4Cl blend as morphology‐modulating agent. This addition optimizes and enhances charge transport in ternary processed chlorobenzene (CB) solvent. The optimized active layer demonstrates improved dissociation capabilities while effectively suppressing recombination. Small‐area OSCs from CB solution achieves an power conversion (PCE), increasing 18.84% 19.42%. Furthermore, device demonstrated good tolerance thickness, with 300‐nm‐thick film achieving PCE exceeding 17%. Notably, blade‐coated module area 13.5 cm 2 , fabricated air using CB, 16.48%, showing excellent application potential. study presents straightforward effective approach optimizing enhancing fabricate solvent, highlighting its potential large‐scale production practical applications.
Язык: Английский
Процитировано
0