Science China Chemistry, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 25, 2024
Language: Английский
Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(40)
Published: July 21, 2024
Abstract In situ removable (ISR) solid additive can employ cold sublimation process to optimize active layer morphology for organic solar cells (OSCs), thus remaining unique potential. Herein, a feasible guideline is proposed discover new ISR 1‐bromo‐4‐chlorobenzene (CBB), whose removing time ( T R ) between those of reported additives 1,4‐dichlorobenzene (DCB) and 1‐chloro‐4‐iodobenzene (CIB). The CBB with moderate beneficial affording the optimal achieving highest power conversion efficiency (PCE) 18.58% D18:L8‐BO binary layer, as supported by most efficient exciton splitting, fastest transfer, balanced carrier transports. Due ability, DCB, CBB, CIB are further aggregation PDINN cathode interlayer. Particularly, CBB‐ CIB‐treated interlayers afforded based OSCs excellent PCEs 19.38% 19.26%, along remarkable fill factors 80.98% 81.37%, respectively. suppress non‐radiative recombination devices, resulting in higher open‐circuit voltage. This work not only provides an effective approach flourish but also expands application OSCs.
Language: Английский
Citations
13
Polymer, Journal Year: 2024, Volume and Issue: 299, P. 126926 - 126926
Published: March 23, 2024
Language: Английский
Citations
12
Macromolecular Rapid Communications, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 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.
Language: Английский
Citations
1
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 16, 2024
Abstract The development of high‐performance organic photovoltaics (OPVs) with thick film active layers is key to moving this technology from laboratory preparation industrial production. Design and synthesis layer materials achieve a bi‐continuous interpenetrating morphology appropriate nanoscale phase separation has been demonstrated as an effective method realize high‐efficiency devices. Here, two non‐fullerene acceptors are developed compare the effect symmetric (diDT‐BO) asymmetric (DTC11‐BO) substituted alkyl chains on device performance by introducing side central core pyrrole ring. Based solubility crystallinity differences DTC11‐BO diDT‐BO, power conversion efficiencies (PCEs) 19.0% 18.1% realized D18 donor. Importantly, D18:DTC11‐BO devices 300 500 nm excellent PCEs 17.7% 16.1%, which among top‐class values for OPVs reported date. work demonstrates that tunning optimizing material design strategy OPVs.
Language: Английский
Citations
7
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 4, 2025
Abstract Compared with conventional devices, inverted organic solar cells (OSCs) generally exhibit superior stability, the electron transport layer (ETL) and interface engineering playing key roles in enhancing both efficiency stability. In this study, tetra‐phenyl porphyrin (TPP), a free base porphyrin, is utilized to modify commercially available tin oxide (SnO₂) nanoparticles, thus creating high‐performance ETL for OSCs. First‐principles calculations characterizations reveal that TPP interacts effectively SnO₂ surface, reduces work function, passivates surface defects, improves conductivity of SnO₂. power conversion (PCE, 15.37%) control PM6:Y6‐based hybrid enables an improved PCE 17.72%. Furthermore, ternary device PM6:L8‐BO:BTP‐eC9 achieves 19.51% (Certificated efficiency: 19.13%, record OSCs). This study presents promising strategy developing highly efficient stable cells.
Language: Английский
Citations
0
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 13, 2025
Abstract Precisely regulating vertically distributed morphology by blade‐coating process is crucial to realize high‐performance large‐scale pseudo‐planar heterojunction organic photovoltaics (OPVs). However, the thermodynamic motion and random diffusion of donor/acceptor (D/A) generated from differences in surface energy concentration during sequentially will cause great challenges for obtaining ideal active layer morphology. Herein, this study have proposed a self‐assembled interface orthogonal strategy introducing low guest (N2200) form protective on PM6 surface, which counteracts erosion solution acceptor enhance continuity D/A phases, thus promoting directional carrier migration effectively suppressing energetic disorder. Finally, N2200‐modified device achieves highest power conversion efficiency (PCE) 19.86%, large‐area module (16.94 cm 2 ) exhibits exceptional PCE (16.43%). This investigation presents innovative insights into issue triggered molecular provides an effective method air‐printing OPVs with precisely controlled based non‐halogenated solvent.
Language: Английский
Citations
0
Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(35), P. 13936 - 13945
Published: Jan. 1, 2024
18.92% efficiency of D18:L8-BO organic solar cells achieved by regulating the solvent evaporation process using CF : Tol mixed solvent.
Language: Английский
Citations
2
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 158404 - 158404
Published: Dec. 1, 2024
Language: Английский
Citations
1
ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 20, 2024
It is challenging to build a deep learning predictive model using traditional data mining methods due the scarcity of available data, and model's internal decision-making process often nonintuitive difficult explain. In this work, directed message passing neural network with transfer (TL) chemprop interpreter proposed improve energy levels prediction visualization for organic photovoltaic materials. The established shows best performance, coefficient determination reaching 0.787 HOMO 0.822 LUMO in small testing set after TL, compared other four models. Then, analyzes local global effects 12 molecular structures on After comprehensive analysis level nonfullerene Y-series, IT-series, materials, new IT-series derivatives are designed. 1,1-dicyano-methylene-3-indanone (IC) end group halogenation can reduce varying degrees, while IC modified by electron-withdrawing aromatic groups increase obtain relatively smaller electrostatic potential (ESP) reducing intermolecular interactions. influence side-chain modification limited. worth mentioning that predicted results match density functional theory calculations. also good generalization transferability predicting electronic This work not only provides cost-effective materials but explains bridge between structure properties.
Language: Английский
Citations
0
Science China Chemistry, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 25, 2024
Language: Английский
Citations
0