Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Organic photovoltaic materials that can be processed via non-halogenated solvents are crucial for the large-area manufacturing of organic solar cells (OSCs). However, the limited available of electron acceptors with adequate solubility and favorable molecular packing presents a challenge in achieving efficient non-halogenated solvent-processed OSCs. Herein, inspired by the three-dimensional dimeric acceptor CH8-4, we employed a molecular isomerization strategy to synthesize its isomers, CH8-4A and CH8-4B, by tuning the position of fluorine (F) atom in the central unit. The differing intramolecular fluorine-sulfur non-covalent interactions among these isomers led to differences in molecular pre-aggregation abilities (CH8-4B
Download full-text PDF
Source
http://dx.doi.org/10.1002/anie.202423562 DOI Listing Publication Analysis
Top Keywords
Similar Publications
High-Speed Slot-Die Coating with Donor-Priority Rapid Aggregation Kinetics for Improved Morphology and Efficiency in Ecofriendly Organic Solar Cells.
Adv Sci (Weinh)
July 2025
State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China.
Solution-processable organic solar cells (OSCs) represent a promising renewable photovoltaic technology with significant potential for eco-compatible production. While high power conversion efficiencies (PCEs) have been achieved in OSCs, scaling this technology for high-throughput manufacturing remains challenging. Key reason lies in the lack of efficient control strategies for the complex and long-duration morphology evolution during high-speed coating process with ecofriendly solvents.
View Article and Find Full Text PDF17.68% Efficiency Nonhalogenated Solvent-Processed Organic Solar Cell Modules Driven by Seed Crystal Strategy.
Adv Mater
April 2025
Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, 315201, P. R. China.
Organic solar cells now surpass 20% efficiency in small-area devices, but the use of chloroform as a solvent poses industrial scalability challenges because of its limited ability of uniform film formation and toxicity. High-boiling, non-halogenated solvents are being studied as alternatives, but their low solubility and slow evaporation complicate crystallization process. Here, the study introduces a seed crystal strategy by incorporating oligo (ethylene glycol)-modified small-molecule donors to optimize the nucleation and crystallization.
View Article and Find Full Text PDFIsomerism Effect of 3D Dimeric Acceptors for Non-Halogenated Solvent-Processed Organic Solar Cells with 20 % Efficiency.
Angew Chem Int Ed Engl
March 2025
State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials, Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai
Organic photovoltaic materials that can be processed via non-halogenated solvents are crucial for the large-area manufacturing of organic solar cells (OSCs). However, the limited available of electron acceptors with adequate solubility and favorable molecular packing presents a challenge in achieving efficient non-halogenated solvent-processed OSCs. Herein, inspired by the three-dimensional dimeric acceptor CH8-4, we employed a molecular isomerization strategy to synthesize its isomers, CH8-4A and CH8-4B, by tuning the position of fluorine (F) atom in the central unit.
View Article and Find Full Text PDFNon-halogenated Solvent-Processed Organic Solar Cells with Approaching 20 % Efficiency and Improved Photostability.
Angew Chem Int Ed Engl
May 2024
International Innovation Institute, Beihang University, Hangzhou, 311115, P. R. China.
The development of high-efficiency organic solar cells (OSCs) processed from non-halogenated solvents is crucially important for their scale-up industry production. However, owing to the difficulty of regulating molecular aggregation, there is a huge efficiency gap between non-halogenated and halogenated solvent processed OSCs. Herein, we fabricate o-xylene processed OSCs with approaching 20 % efficiency by incorporating a trimeric guest acceptor named Tri-V into the PM6:L8-BO-X host blend.
View Article and Find Full Text PDFHot-Casting Strategy Empowers High-Boiling Solvent-Processed Organic Solar Cells with Over 18.5% Efficiency.
Adv Mater
January 2024
Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectric/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China.
Most top-rank organic solar cells (OSCs) are manufactured by the halogenated solvent chloroform, which possesses a narrow processing window due to its low-boiling point. Herein, based on two high-boiling solvents, halogenated solvent chlorobenzene (CB) and non-halogenated green solvent ortho-xylene (OX), preparing active layers with the hot solution is put forward to enhance the performance of the OSCs. In situ test and morphological characterization clarify that the hot-casting strategy assists in the fast and synchronous molecular assembly of both donor and acceptor in the active layer, contributing to preferable donor/acceptor ratio, vertical phase separation, and molecular stacking, which is beneficial to charge generation and extraction.
View Article and Find Full Text PDF