Balanced Crystallization Enhances Morphology and Efficiency in Binary Organic Solar Cells DOI

Ni Gao,

Panpan Zhang,

Zhigang Xu

и другие.

Small, Год журнала: 2025, Номер unknown

Опубликована: Апрель 21, 2025

Abstract Achieving high‐performance organic solar cells (OSCs) relies heavily on precise morphology optimization, a challenging task due to the intrinsic differences in crystallization kinetics and interfacial compatibility between polymer donors small‐molecule acceptors. In this work, 2,7‐dibromonaphthalene (DBN) is introduced as an innovative solid additive that uniquely regulates both donor acceptor phases within PM6:Y6 system. Unlike conventional liquid additives, which often induce excessive Y6 crystallization, DBN achieves balanced enhancing molecular order PM6 while mitigating over‐aggregation Y6. This dual‐phase effect improves light absorption, exciton generation dissociation, charge transport, reduces recombination losses. As result, OSCs treated with achieved remarkable power conversion efficiency (PCE) of 18.5%, open‐circuit voltage ( V OC ) 0.848 V, high short‐circuit current density J SC 28.15 mA cm −2 , enhanced fill factor (FF) 77.7%. Adding anti‐reflection MgF 2 layer further boosts 19.0%, setting new benchmark for binary devices. study establishes promising regulator presents robust strategy control, advancing development photovoltaic applications.

Язык: Английский

Polypyrrole-Decorated Hybrid Anode Interlayer for Enhancing Efficiency and Stability of Non-Fullerene Solar Cells DOI

Jiafeng Zhang,

Lianjie Zhang, Junwu Chen

и другие.

ACS Applied Polymer Materials, Год журнала: 2024, Номер 6(13), С. 7742 - 7750

Опубликована: Июль 1, 2024

Язык: Английский

Процитировано

3

Loosely Bounded Exciton with Enhanced Delocalization Capability Boosting Efficiency of Organic Solar Cells DOI
Qing Shen,

Chengliang He,

Shuixing Li

и другие.

Small, Год журнала: 2024, Номер 20(44)

Опубликована: Июль 5, 2024

Abstract In organic solar cells (OSCs), electron acceptors have undergone multiple updates, from the initial fullerene derivatives, to later acceptor‐donor‐acceptor type non‐fullerene (NFAs), and now Y‐series NFAs, based on which efficiencies reached over 19%. However, key property responsible for further improved efficiency molecular structure design is remained unclear. Herein, material properties are comprehensively scanned by selecting PC 71 BM, IT‐4F, L8‐BO as representatives different development stages of acceptors. For comparison, asymmetric acceptor BTP‐H5 with desired loosely bounded excitons designed synthesized. It's identified that reduction intrinsically exciton binding energy ( E b ) enhancement delocalization capability act roles in boosting performance. Notably, 100 meV has been observed BM BTP‐H5, correspondingly, electron‐hole pair distance almost two times BM. As a result, 40% S‐Q limit BM‐based OSC 60% BTP‐H5‐based one, achieves an 19.07%, among highest values binary OSCs. This work reveals confirmed function quantitatively pushing OSCs, thus providing enlightenment future design.

Язык: Английский

Процитировано

3

The Conjugated/Non‐Conjugated Linked Dimer Acceptors Enable Efficient and Stable Flexible Organic Solar Cells DOI
Haoran Yin, Gang Xie,

Tuhong Wu

и другие.

Macromolecular Rapid Communications, Год журнала: 2024, Номер unknown

Опубликована: Июль 18, 2024

The fabrication of the flexible devices with excellent photovoltaic performance and stability is critical for commercialization organic solar cells (OSCs). Herein, conjugated dimer acceptor DY-TVCl non-conjugated DY-3T based on monomer MY-BO are synthesized to regulate molecular glass transition temperatures (T

Язык: Английский

Процитировано

3

Strategies to achieve efficiencies of over 19% for organic solar cells DOI Creative Commons
Xingchi Xiao,

Malika Chalh,

Zhi Rong Loh

и другие.

Cell Reports Physical Science, Год журнала: 2025, Номер 6(1), С. 102390 - 102390

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0

Balanced Crystallization Enhances Morphology and Efficiency in Binary Organic Solar Cells DOI

Ni Gao,

Panpan Zhang,

Zhigang Xu

и другие.

Small, Год журнала: 2025, Номер unknown

Опубликована: Апрель 21, 2025

Abstract Achieving high‐performance organic solar cells (OSCs) relies heavily on precise morphology optimization, a challenging task due to the intrinsic differences in crystallization kinetics and interfacial compatibility between polymer donors small‐molecule acceptors. In this work, 2,7‐dibromonaphthalene (DBN) is introduced as an innovative solid additive that uniquely regulates both donor acceptor phases within PM6:Y6 system. Unlike conventional liquid additives, which often induce excessive Y6 crystallization, DBN achieves balanced enhancing molecular order PM6 while mitigating over‐aggregation Y6. This dual‐phase effect improves light absorption, exciton generation dissociation, charge transport, reduces recombination losses. As result, OSCs treated with achieved remarkable power conversion efficiency (PCE) of 18.5%, open‐circuit voltage ( V OC ) 0.848 V, high short‐circuit current density J SC 28.15 mA cm −2 , enhanced fill factor (FF) 77.7%. Adding anti‐reflection MgF 2 layer further boosts 19.0%, setting new benchmark for binary devices. study establishes promising regulator presents robust strategy control, advancing development photovoltaic applications.

Язык: Английский

Процитировано

0