Eco-Friendly Solvent-Processed Layer-by-Layer Ternary All-Polymer Solar Cells Exhibiting Over 18.5% Efficiency DOI
Wenjing Xu,

Hongyue Tian,

Yuheng Ni

et al.

Published: Jan. 1, 2024

In this work, a series of eco-friendly solvent-processed all-polymer solar cells (APSCs) were fabricated by employing the sequentially spin-coating method. Two polymer donor materials PBQx-TCl and PM6 deliberately selected due to their similar chemical structure, preferring form alloyed state for better exciton dissociation hole transport in layer-by-layer (LbL) APSCs. The between can be confirmed from PL spectra neat blend films, as well short-circuit current densities (JSC) special without acceptor layer. optimized ternary LbL APSCs with 30 wt% layer exhibit power conversion efficiency (PCE) 18.55%, originating simultaneously improved JSC 25.16 mA cm-2, open-circuit voltage (VOC) 0.966 V, fill factor 76.33%. increased VOC is mainly attributed decreased energy loss good compatibility two donors. PCE 18.55% should among highest values processed solvent.

Language: Английский

Cyano-functionalized pyrazine: an electron-deficient unit as a solid additive enables binary organic solar cells with 19.67% efficiency DOI

Lijun Tu,

Hao Wang,

Weixu Duan

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(10), P. 3365 - 3374

Published: Jan. 1, 2024

A strong electron-deficient unit CNPz as a solid additive was developed in PTQ10/ m -BTP-PhC6 binary organic solar cells. high PCE of 19.67% achieved with significant increase the J SC and FF (81.8%).

Language: Английский

Citations

37
Eco-friendly solvent-processed layer-by-layer ternary all-polymer solar cells exhibiting over 18.5% efficiency DOI
Wenjing Xu,

Hongyue Tian,

Yuheng Ni

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 493, P. 152558 - 152558

Published: May 25, 2024

Language: Английский

Citations

28
Recent development in solid additives enables high-performance organic solar cells DOI

Waqar Ali Memon,

Zihao Deng, Feng He

et al.

EnergyChem, Journal Year: 2024, Volume and Issue: 6(4), P. 100129 - 100129

Published: June 15, 2024

Language: Английский

Citations

12
The Role of Solution Aggregation Property toward High‐Efficiency Non‐Fullerene Organic Photovoltaic Cells DOI
Lei Xu, Sunsun Li, Wenchao Zhao

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(28)

Published: April 26, 2024

In organic photovoltaic cells, the solution-aggregation effect (SAE) is long considered a critical factor in achieving high power-conversion efficiencies for polymer donor (PD)/non-fullerene acceptor (NFA) blend systems. However, underlying mechanism has yet to be fully understood. Herein, based on an extensive study of blends consisting representative 2D-benzodithiophene-based PDs and acceptor-donor-acceptor-type NFAs, it demonstrated that SAE shows strong correlation with aggregation kinetics during solidification, competition between PD NFA determines phase separation film thus performance. SAEs enable earlier evolutions than resulting well-known polymer-templated fibrillar network structures superior PCEs. With weakening PDs' effects, showing stronger tendencies aggregate, tend form oversized domains, leading significantly reduced external quantum fill factors. These trends reveal importance matching NFA. The abilities various materials are further evaluated ability/photovoltaic parameter diagrams 64 PD/NFA combinations provided. This work proposes guiding criteria facile approach match efficient

Language: Английский

Citations

10
A systematic investigation on pyridine derived solid additives inducing fibrillar morphology for highly efficient organic solar cells with over 20 % efficiency DOI Creative Commons
Kai Chen,

Weixu Duan,

Lang Zhou

et al.

Materials Science and Engineering R Reports, Journal Year: 2025, Volume and Issue: 164, P. 100977 - 100977

Published: March 18, 2025

Language: Английский

Citations

1
Molecular Stacking Regulation of Organic Semiconductors Via Intermolecular Interaction Enables High‐Performance Organic Solar Cells DOI
Xiaoxiao Li, Yue Wu, Hang Yang

et al.

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

Published: April 3, 2025

Abstract The ordered π ‐stacking with face‐on orientation and uniform phase separation in active layer is essential to develop high‐performance organic solar cells (OSCs). Differing from optimization, it challenging regulate the molecular stacking of semiconductors during film‐formation process. In this contribution, a universal strategy established simultaneously optimize aggregation via intermolecular interaction solid additive. It demonstrated that strong between additive critical factor regulation. Benefitting more aroused by treatment, significantly improved photovoltaic performance can be realized OSCs. Particularly, an outstanding power‐conversion efficiency (PCE) 20.04% achieved D18:N3:AQx‐2F‐based device treated thioxanthene, while control without treatment yields much lower PCE 19.00%.

Language: Английский

Citations

1
Sustainable Solution Processing Toward High‐Efficiency Organic Solar Cells: A Comprehensive Review of Materials, Strategies, and Applications DOI
Bing Ma, Yong Yan,

Maoheng Wu

et al.

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

Published: Oct. 25, 2024

Abstract Organic solar cells (OSCs) have emerged as promising candidates for renewable energy harvesting due to their lightweight, flexible, and low‐cost fabrication potential. The efficiency of OSCs is largely determined by the choice solvents, which significantly affect film morphology active layers, intermixed donor‐acceptor domains, overall device performance. Beginning with an introduction importance solvent selection, screening classification emphasizing characteristics based on sustainability, solubility, other additional considerations are explored. Various non‐halogenated highlighting commonly used aromatic biomass‐derived water/alcohol‐based solvents state‐of‐the‐art donor acceptor materials, focusing efficient materials such PM6 D18, high‐performing Y‐series acceptors also presented. Strategies developing high‐performance processed using examined, including engineering additive additive‐free approaches, ternary strategies, layer‐by‐layer techniques. large‐area devices addressed, blade‐coating, slot‐coating, processing Finally, this review outlines future research directions in OSCs, need continuous innovation overcome existing limitations propel OSC technology toward commercial viability.

Language: Английский

Citations

7
Methylated naphthalene additives with various melting and boiling points enable a win–win scenario of optimizing both cost and efficiency of polymer solar cells DOI
Li Tao, Xiaoying Zhang, Qi Chen

et al.

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

Published: Jan. 1, 2025

Readily available 2-methylnaphthalene (2-MN) was demonstrated as a volatile solid additive to achieve good win–win situation of optimizing among efficiency, cost and environmental issues.

Language: Английский

Citations

0
Highly Ordered Polymorphism of Small Molecule Acceptor Delivering Efficient and Stable Binary Organic Solar Cells DOI Open Access
Panpan Zhang,

Ni Gao,

Bo Du

et al.

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

Advancements in narrow bandgap organic small molecule acceptors (SMAs) has promoted solar cell (OSC) efficiencies beyond 20%. Achieving this milestone necessitates precise control over the active layer morphology, particularly its crystallinity and phase distribution, to optimize light absorption, charge transport, suppress recombination. However, controlling SMA morphology remains a significant challenge due their strong aggregation tendency. Existing methods, including high-temperature annealing, introducing high boiling point additives, frequently yield disordered polymorphs with limited scalability. Here, we report novel approach of utilizing 4-bromochlorobenzene as volatile solid additive induce formation highly ordered polymorph BTP-eC9 through mild annealing at 60 °C. This marks first demonstration such an polymorph, exhibiting optical properties comparable ideal crystals, enhanced anisotropy, refractive index, extinction coefficients. The specific further enables well-organized PM6 donor arrangement, establishing optimal bicontinuous network morphology. Consequently, OSCs based on PM6:BTP-eC9 achieve power conversion efficiency 19.53%, which increases 20.32% addition antireflection layer. work provides scalable effective strategy for enhancing OSC performance highlights critical role polymorphism optimizing photovoltaic performance.

Language: Английский

Citations

0
Balanced Crystallization Enhances Morphology and Efficiency in Binary Organic Solar Cells DOI

Ni Gao,

Panpan Zhang,

Zhigang Xu

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 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.

Language: Английский

Citations

0