Allyl-terminated Small Molecule Donors Effectively Regulate Miscibility to Improve the Performance of Organic Solar Cells

Journal of Materials Chemistry C, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Optimization of small molecule donor morphology in OSCs: allyl group-driven enhancements H35 for superior PCEs 15.21% (ASM) and 10.78% (SMD:PA) via improved miscibility, domain structure, charge transfer.

Language: Английский

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MR-TADF emitter as a dual-functional solid additive to extend exciton lifetime and optimize morphology for organic solar cells with ∼19% efficiency

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 488, P. 151067 - 151067

Published: April 7, 2024

Language: Английский

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Precise Control Over Crystallization Kinetics by Combining Nucleating Agents and Plasticizers for 20.1% Efficiency Organic Solar Cells

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 11, 2025

Abstract Obtaining controllable active layer morphology plays a significant role in boosting the device performance of organic solar cells (OSCs). Herein, quaternary strategy, which incorporates polymer donor D18‐Cl and small molecule acceptor AITC into host D18:N3, is employed to precisely modulate crystallization kinetics for favorable evolution within layer. In situ spectroscopic measurements during film‐formation demonstrate that while works as nucleator promote aggregation D18 foster donor/acceptor intermixing, has exactly opposite impact on N3 intermixing acceptor, working plasticizer. The mutually compensational effect dual‐guests, result, enables synergistic control over fibrillar networks, multi‐length scale morphology, vertical phase distribution, leading optimized 3D greatly enhanced exciton dissociation charge transfer, suppressed recombination, reduced energy loss. Consequently, OSCs based D18:D18‐Cl:N3:AITC achieved an excellent power conversion efficiency 20.1%, represents one highest efficiencies single‐junction OSCs. This work presents effective strategy regulate toward advanced high‐performance

Language: Английский

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Relocating selenium alkyl chain enables efficient all-small molecule organic solar cells

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 482, P. 149149 - 149149

Published: Jan. 28, 2024

Language: Английский

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Giant Molecule Acceptors for High Performance Polymer Solar Cells

Giant, Journal Year: 2024, Volume and Issue: 20, P. 100336 - 100336

Published: Aug. 23, 2024

Language: Английский

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Combination of methylthio-chemistry with living crystallization-driven self-assembly toward uniform π-conjugated nanostructures with antibacterial activity, surface tailorability, tunable morphology and dimension

Science China Chemistry, Journal Year: 2024, Volume and Issue: 67(7), P. 2341 - 2352

Published: June 12, 2024

Language: Английский

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Effect of Molecular Conformation on Intermolecular Interactions and Photovoltaic Performances of Giant Molecule Acceptors

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

Published: Aug. 5, 2024

Abstract The molecular conformation of giant molecule acceptors (GMAs) plays a significant role in regulating the intermolecular interactions and their photovoltaic performances organic solar cells (OSCs). For linear GMA GT‐l, stronger homo‐molecular interaction causes its aggregation being weakly affected by donor, thus forming an ordered stacking proper phase separation blend film. star‐shaped GT‐s‐based film shows dominant hetero‐molecular that suppresses donor acceptor, resulting smaller more uniform vertical distribution. While for another GTs, weakest to form larger separation. Therefore, GT‐l based OSC with PM6 as highest charge mobilities, fastest transfer (CT) process, reduced energy loss less recombination, contributing higher power conversion efficiency (PCE) 19.03%. Comparatively, PCEs OSCs on GTs GT‐s are 18.05% 17.58% respectively. Notably, all three GMAs show excellent thermal stability long‐term storage stability. This study provides facile strategy tuning linking unit connecting mode designing highly efficient stable materials.

Language: Английский

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Ring‐Locked Polymer Acceptors for All‐Polymer Solar Cells Synthesized via Knoevenagel Polycondensation

Macromolecular Chemistry and Physics, Journal Year: 2025, Volume and Issue: unknown

Published: May 14, 2025

Abstract Polymerized small molecule acceptors (PSMAs) have greatly promoted the performance of all‐polymer solar cells (all‐PSCs), but they are generally synthesized via Stille polycondensation, and thus suffer from drawbacks high cost, toxicity, harsh reaction conditions, etc . Here, two new PSMAs named PITBIC‐F PITBIC‐Cl by metal‐free Knoevenagel polycondensation process catalyzed Lewis base, both which exhibit a degree polymerization over 25. Due to introduction ring‐locked structure, improved photostability. Mixed with polymer donor PBDB‐T, all‐PSCs devices been successfully fabricated, shown limited device due inferior charge transport undesired film phase separation.

Language: Английский

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Enhancing stability and performance of pseudo-planar heterojunction organic solar cells using a hindered phenolic antioxidant with over 19% efficiency

Science China Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 17, 2024

Language: Английский

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As-cast organic solar cells with 19.44% efficiency enabled by introducing functional fullerene derivative to facilitate charge carrier generation and transport

Science China Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 19, 2024

Language: Английский

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