Controlling the Third Component Distribution Toward High‐Efficient Ternary Organic Solar Cells

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 4, 2025

Abstract Ternary organic solar cells (T‐OSCs) based on energy transfer can significantly boost the light absorption efficiency, thereby improving their power conversion efficiency (PCE). However, uncontrolled distribution of third component in bulk heterojunction (BHJ) device often results low ( E FRET ), and also tends to compromise interpenetrating network structure active layer. Herein, a localized deposition strategy is proposed establish with controlled (CDBHJ). Take PM6:Y6:IBC‐F for example, IBC‐F serves as donor PM6 acceptor. Compared BHJ‐based devices, proportion within phase increases from 25.1% 72.7%, enhancing 46.5% 66.8% CDBHJ‐based devices. Furthermore, improves crystallization separation kinetics during film‐forming process. Thus, exhibits superior exciton generation, diffusion, dissociation process, along higher more balanced charge transport. Consequently, achieves PCE 18.29%, which ranks among best PM6:Y6‐based T‐OSCs. This work demonstrates effectiveness controlling component, presenting an innovative pathway development highly efficient

Язык: Английский

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Polymer-like tetramer acceptor enables stable and 19.75% efficiency binary organic solar cells

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Фев. 20, 2025

Abstract Limited by large batch differences and inferior polymerization degree of current polymer acceptors, the potential high efficiency stability advantages all-polymer solar cells (all-PSCs) cannot be fully utilized. Alternatively, largely π-extended structurally definite oligomer acceptors are effective strategies to realize overall performance acceptors. Herein, we report a linear tetramer acceptor namely 4Y-BO with identical molecular skeleton comparable molecular-weight relative control PY-BO. The shows refined film-forming kinetics improved ordering, offering uniform crystallinity donor hence well-defined fibrous heterojunction textures. Encouragingly, PM6:4Y-BO devices achieve an up 19.75% (certified efficiency:19.58%), surpassing that PM6:PY-BO device (15.66%) ranks highest among based on More noticeably, thermal stability, photostability mechanical flexibility collectively enhanced for devices. Our study provides important approach fabricating stable organic photovoltaics.

Язык: Английский

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Solid additive modulates acceptor crystallization to achieve 19.11% efficiency and high storage stability in organic solar cells

Journal of Energy Chemistry, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 1, 2024

Язык: Английский

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1,4-Dimethoxynaphthalene as a Solid Additive for Improved Photovoltaic Performance in Organic Solar Cells

ACS Applied Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 10, 2025

Morphology optimization of blend films is an essential strategy to enhance the photovoltaic performance organic solar cells (OSCs). Additive engineering effective for fine-tuning active layer morphology. Given limited efforts and achievements in designing synthesizing liquid additives, new solid additives manipulate morphology layers have gained widespread attention. Herein, 1,4-dimethoxynaphthalene (DMNA), with merits simple structure, low cost, ecofriendliness, successfully incorporated as a novel additive optimize OSCs based on D18-Cl:N3. The relationship between different DMNA contents device has been investigated. It found that can be effectively regulated by DMNA, leading enhanced molecular packing films, which favors exciton dissociation, charge transfer, suppression recombination. As result, 18.61% power conversion efficiency (PCE) obtained D18-Cl:N3 binary devices better than 17.21% PCE control device. This primarily due simultaneous increase short-circuit current density fill factor. Furthermore, general applicability confirmed other systems. These results suggest presents potential prospects regulating bulk heterojunction toward high-performance high-stability OSCs.

Язык: Английский

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Fabricating High‐Performance Organic Solar Cells by Using Inside‐Chain Chlorinated Acceptor as a Ternary Component

Small, Год журнала: 2025, Номер unknown

Опубликована: Май 19, 2025

Abstract In this study, two molecules, WLA1 and WLA2, with the same molecular backbone but different degrees of inside‐chain chlorination, are designed synthesized to elucidate effects chlorine substitution strategies on morphology small‐molecule acceptors blended films. The chlorinated WLA2 enhances crystallinity stacking. For binary organic solar cells (OSCs), corresponding films exhibit suitable phase separation crystallinity. Therefore, WLA2‐based OSCs achieve a power conversion efficiency (PCE) 16.80%, which is higher than that WLA1‐based (16.21%). ternary blending strategy, incorporated into D18:L8‐BO system as third component, introduction acceptor further improves facilitates induction fiber formation. have significantly exciton diffusion charge transport efficiencies compared L8‐BO WLA1. PCE 19.64%. This study emphasizes great potential combining an molecule strategy prepare high‐performance OSCs.

Язык: Английский

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A comprehensive review of PM6:BTP-eC9 based non-fullerene organic solar cells

Sustainable materials and technologies, Год журнала: 2024, Номер 42, С. e01173 - e01173

Опубликована: Ноя. 12, 2024

Язык: Английский

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A Theoretical Exploration of Quantum Dots and Nanowires as Next-Generation Photovoltaics

Solar Energy Advances, Год журнала: 2024, Номер unknown, С. 100085 - 100085

Опубликована: Дек. 1, 2024

Язык: Английский

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