High‐Performance Organic Solar Cells Enabled by 3D Globally Aromatic Carboranyl Solid Additive DOI
Hanqiang Wang, Zhicheng Zhong, Sergio Gámez‐Valenzuela

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 18, 2024

Abstract A key factor in optimizing organic solar cells (OSCs) is the precise control of blend film morphology to enhance exciton dissociation and charge transport. Solid additives play a vital role this process, with 3D polyhedral or spherical molecules being ideal candidates due their delocalized π‐orbitals omnidirectional However, application classical fullerene derivatives as limited by synthetic complicacy poor solubility. Herein, potential globally aromatic carboranyl cages solid additives, specifically 1‐amino‐ o ‐carborane (CB‐NH 2 ) 1‐carboxy‐ (CB‐COOH), explored fine‐tune improve performance OSCs. These provide an extensive surface for hydrogen bonding interactions, which serve driving force manipulating vertical phase separation active layer crystallinity. Remarkably, CB‐NH ‐processed devices well‐tuned yield remarkable power conversion efficiency 19.48%, highlighting effectiveness on improving OSC performance. This work challenges reliance offers new insights into mechanisms can achieve high OSCs, emphasizing significance molecular engineering development next‐generation cell technology.

Язык: Английский

Regulating Molecular Structure of S,N‐Heteroacene Non‐fullerene Acceptors to Achieve Efficient Photoelectric Properties† DOI
Mingtao Liu, Peipei Zhu,

Shiting Lai

и другие.

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

Опубликована: Сен. 16, 2024

Comprehensive Summary The ternary strategy has demonstrated its efficacy in improving charge transport organic solar cells (OSCs). Here, three novel non‐fullerene acceptors, SN6C9‐4F, SN6C9‐4Cl and SN6C10‐4F, based on S,N‐heteroacene linear backbone were designed synthesized. acceptors exhibit excellent molecular coplanarity, high crystallinity possess a deep‐lying lowest unoccupied orbital energy level, which is beneficial for injection field‐effect transistors (OFETs). Notably, the OFET devices all achieved impressive electron mobilities, with SN6C10‐4F achieving up to 0.73 cm 2 ·V –1 ·s , one of highest values among A‐D‐A type small molecules. In addition, OSCs device PBDB‐T:SN6C9‐4F exhibited best power conversion efficiency 12.07% owing optimal morphology enhanced transport. Moreover, incorporation SN6C9‐4F into efficient PM6:L8‐BO binary system form resulted extended absorption range, donor crystallization, improved more balanced transport, ultimately leading an improvement PCE from 17.78% 18.32%. This study highlights potential developing distinct structures Y‐series broaden regulate providing approach enhance OSCs.

Язык: Английский

Процитировано

4
Solid additive modulates acceptor crystallization to achieve 19.11% efficiency and high storage stability in organic solar cells DOI

Luye Cao,

Hengyuan Zhang,

Jingwen Du

и другие.

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

Опубликована: Ноя. 1, 2024

Язык: Английский

Процитировано

4
Layer-optimized Cd0.85PS3Li0.15H0.15 triggering donor crystallization for high performance organic photovoltaics with nuclear radiation shielding DOI

Chuankai Zou,

Jingyao Zhang,

Yuhang Liu

и другие.

Chemical Engineering Journal, Год журнала: 2024, Номер 491, С. 152149 - 152149

Опубликована: Май 11, 2024

Язык: Английский

Процитировано

3
Improved Exciton Diffusion through Modulating Förster Resonance Energy Transfer for Efficient Organic Solar Cells DOI
Mingxu Zhou,

Kangning Zhang,

Xuewu Li

и другие.

Solar RRL, Год журнала: 2024, Номер 8(13)

Опубликована: Май 29, 2024

Förster resonance energy transfer (FRET) is commonly utilized in organic solar cells (OSCs) to enhance the power conversion efficiency (PCE) by promoting molecular interactions. The PCE greatly affected number of photo‐generated excitons that effectively reach interfaces between donor and acceptor materials OSCs. However, correlation FRET exciton diffusion has received limited attention. Therefore, it crucial understand manipulate process for investigating dynamics Herein, BTA3 its derivatives are chosen as third components donors elucidate intrinsic photophysical mechanism OSCs manipulating their efficiency. results unambiguously demonstrate addition guest F‐BTA3 exhibits highest efficiency, leading a significant enhancement both PM6:Y6 PM6:PY‐IT host systems. By correlating dynamics, this remarkable increment length attributed. Experimental theoretical simulations indicate high arises from strong dipole–dipole interaction, positive with length. This study showcases effective regulation through modulation FRET, offering novel perspective optimizing performance photovoltaic devices.

Язык: Английский

Процитировано

3
Dual Liquid Rubber Matrix Based Highly Efficient and Mechanically Robust Layer‐by‐Layer Organic Solar Cells DOI Creative Commons
Yuchen Liao, Huimin Xiang, Tianyu Hu

и другие.

SusMat, Год журнала: 2025, Номер unknown

Опубликована: Март 7, 2025

ABSTRACT Developing organic solar cells (OSCs) simultaneously possessing high efficiency and robust mechanical properties is one of crucial tasks to ensure their operational reliability applicability for emerging wearable devices. However, enhancing without compromising the electrical high‐performance active materials remains a challenge. This work presents method that overcomes this limitation by embedding dual liquid rubber (DLR) matrix consisting tetra‐fluorophenyl azide penta‐fluorophenyl end‐capped polybutadienes, PFFA PFF, into layer‐by‐layer (LBL) films, which enables finely controlled film morphology built on strong noncovalent interactions cross‐linking chemistry. The resulting LBL demonstrates significantly improved stretchability reduced stiffness layer, with crack initiation strain approximately eight times higher than pristine film. potential DLR strategy demonstrated in PM6:L8‐BO flexible power conversion 17.7%, among highest efficiencies OSCs date. More importantly, also significant bending durability retain 84.2% initial performance after 5000 cycles. design concept offers new achieving highly efficient stretchable OSCs.

Язык: Английский

Процитировано

0
Fluorobenzene Side Chain‐Engineered Y6 Derivatives for Enhanced Molecular Stacking and High‐Performance Additive‐Free Organic Solar Cells DOI Open Access
Jianyi Luo, Weilin Zhou, Yinfeng Li

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 6, 2025

Abstract Organic solar cells (OSCs) have become a promising photovoltaic technology, achieving high efficiencies over 20%. However, simplifying processing techniques to maintain performance remains significant challenge. This work reports series of Y6‐derived non‐fullerene acceptors (NFAs), namely BTP‐R1F, BTP‐R2F, BTP‐R3F, and BTP‐R5F, featuring fluorinated phenoxyoctyl side chains with varying numbers fluorine atoms. Systematic fluorination has minimal impact on optical absorption energy levels but significantly influences molecular packing morphology. BTP‐R5F exhibit compact honeycomb‐like stacking patterns enhanced π–π interactions, while BTP‐R3F displays looser S‐shaped due severe chain folding, thus hindering charge transport. Additive‐free OSCs processed toluene demonstrate that D18/BTP‐R5F formed well‐defined fiber‐like interpenetrating network, remarkable power conversion efficiency (PCE) 19.06%. study highlights the potential fluorobenzene engineering enhance morphology without any additive, offering pathway toward scalable high‐performance simplified conditions. The findings provide valuable insights for designing next‐generation NFAs efficient reproducible OSCs.

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
Synergistic regulation of the active layer morphology by halogenated methoxybenzene derivative solid additives for high-performance organic solar cells DOI
Wenming Li, Chengcheng Xie, F. Xiao‐Feng Qin

и другие.

Materials Today Chemistry, Год журнала: 2025, Номер 46, С. 102730 - 102730

Опубликована: Май 9, 2025

Язык: Английский

Процитировано

0
Selecting Solid Additives to Control the Interaction between Polymer Donors and Additives for Constructing High-Efficiency Organic Solar Cells DOI
Dongxu Li,

Songting Liang,

Xinqiang Hua

и другие.

Macromolecules, Год журнала: 2024, Номер 57(8), С. 3580 - 3587

Опубликована: Апрель 12, 2024

The utilization of volatile solid additives has emerged as a promising approach to optimize the morphology and enhance performance organic solar cells (OSCs). This work presents new insight that investigates intermolecular interactions between polymer donors induce favorable blend films for high-efficiency OSCs. Simulations experiments demonstrate increased interaction additive donor's electron-withdrawing unit would contribute ordered packing film. Ultimately, altered charge separation transport lead different photoelectric properties devices, which also proves donor cannot be ignored. Because strongest m-DBDF fluorinated quinoxaline TPQ-3F, OSC devices based on TPQ-3F:Y6:m-DBDF obtained best power conversion efficiency (PCE) 15.71% compared with PCE p-DBDF- o-DBDF-processed devices.

Язык: Английский

Процитировано

2
Morphology Optimization by Non‐Halogenated and Twisted Volatile Solid Additive for High‐Efficiency Organic Solar Cells DOI Open Access

Linze Wu,

Maojin Yun,

Jianqiang Qin

и другие.

Small, Год журнала: 2024, Номер unknown

Опубликована: Окт. 20, 2024

Abstract Recently, volatile solid additives have attracted tremendous interest in the field of organic solar cells (OSCs), which can effectively improve device efficiency without sacrificing reproducibility and stability device. However, structure reported is onefold its working mechanism needs to be further investigated. Herein, a novel non‐halogenated twisted additive 1,4‐diphenoxybenzene (DPB) employed optimize morphology active layer OSCs. The properties DPB, layer, carrier dynamics behaviors been systematically investigated through theoretical calculations, situ ex spectroscopy, grazing‐incidence wide‐angle X‐ray scattering (GIWAXS), small‐angle (GISAXS) measurement, as well ultrafast spectroscopy technology. results reveal that DPB selectively interacts with acceptor Y6, thus forms optimized increased molecular crystallinity, tight packing, favorable phase separation. As result, devices deliver remarkable power conversion (PCE) 19.04%, highest value for D18‐Cl:N3 system date. These demonstrate has broad prospects preparation highly efficient OSCs, providing experimental guidance development high‐performance additives.

Язык: Английский

Процитировано

2