Advancing all-polymer solar cells with solid additives DOI Creative Commons
Xiaobai Ma, Qiang Fu, Jinwei Chen

et al.

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

Published: Dec. 4, 2024

Abstract All-polymer solar cells (all-PSCs) have attracted significant research attention in recent years, primarily due to their advantages of outstanding photo-thermal stability and excellent mechanical flexibility. However, all-PSCs typically exhibit complex morphologies during the film formation blend films, tendency become entangled polymer chains, negatively impacting fill factor (FF) morphology stability. Therefore, optimization co-mingled heterojunction is crucial for improving device performance. Recent studies reveal that solid additives (SAs) can realize regulation molecular aggregation state, packing, domain size active layer, which not only improves exciton dissociation, charge transport collection process but also ultimately realizes enhancement efficiency. this review provides an in-depth insight into different mechanisms all-PSCs, offering a comprehensive discussion on progress optimizing enhancing Finally, we present outlook further structural modification strategies towards better bulk paving way achieving stability, superior flexibility, high-efficiency all-PSCs.

Language: Английский

Optimizing Double‐Fibril Network Morphology via Solid Additive Strategy Enables Binary All‐Polymer Solar Cells with 19.50% Efficiency DOI
Jiali Song, Chao Li,

Haisheng Ma

et al.

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

Published: July 16, 2024

Double-fibril network morphology (DFNM), in which the donor and acceptor can self-assemble into a double-fibril structure, is beneficial for exciton dissociation charge transport organic solar cells. Herein, it demonstrated that such DFNM be constructed optimized all-polymer cells (all-PSCs) with assistance of 2-alkoxynaphthalene volatile solid additives. It revealed incorporation induce stepwise regulation aggregation molecules during film casting thermal annealing processes. Through altering alkoxy additives, both intermolecular interactions molecular miscibility host materials precisely tuned, allows optimization process facilitation self-assembly, thus leading to reinforced packing DFNM. As result, an unprecedented efficiency 19.50% (certified as 19.1%) obtained 2-ethoxynaphthalene-processed PM6:PY-DT-X all-PSCs excellent photostability (T

Language: Английский

Citations

35
Isomerization Engineering of Solid Additives Enables Highly Efficient Organic Solar Cells via Manipulating Molecular Stacking and Aggregation of Active Layer DOI
Yawei Miao, Yanna Sun,

Wentao Zou

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(33)

Published: June 20, 2024

Morphology control is crucial in achieving high-performance organic solar cells (OSCs) and remains a major challenge the field of OSC. Solid additive an effective strategy to fine-tune morphology, however, mechanism underlying isomeric solid additives on blend morphology OSC performance still vague urgently requires further investigation. Herein, two based pyridazine or pyrimidine as core units, M1 M2, are designed synthesized explore working OSCs. The smaller steric hindrance larger dipole moment facilitate better π-π stacking aggregation M1-based active layer. M1-treated all-small-molecule OSCs (ASM OSCs) obtain impressive efficiency 17.57%, ranking among highest values for binary ASM OSCs, with 16.70% M2-treated counterparts. Moreover, it imperative investigate whether isomerization engineering works state-of-the-art polymer D18-Cl:PM6:L8-BO-based devices achieve exceptional 19.70% (certified 19.34%), work provides deep insights into design clarifies potential optimizing device through additives.

Language: Английский

Citations

34
Low‐Volatility Fused‐Ring Solid Additive Engineering for Synergistically Elongating Exciton Lifetime and Mitigating Trap Density Toward Organic Solar Cells of 20.5% Efficiency DOI Open Access
Xin Song,

Busheng Zhang,

Xingting Liu

et al.

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

Published: Feb. 12, 2025

Abstract Volatile solid additives (VSAs) with single or fused‐ring structures have attracted much attention for enhancing power conversion efficiencies (PCEs) of organic solar cells (OSCs). While the working mechanisms high‐volatility single‐ring been well studied, influence low‐volatility VSAs on molecular aggregations and exciton/carrier dynamics remains still unclear. Herein, 3,6‐dibromothieno[3,2‐b]thiophene (3,6TTBr) is selected as a representative VSA to elucidate its mechanism. Via theoretical experimental joint investigation, it found that rigid planar 3,6TTBr molecules adsorb onto terminal units L8‐BO (acceptor), inducing loose space adjacent molecules. The thus favors center‐terminal packing larger interfragment distance, which relieves over‐aggregation induces ordered packing. Consequently, treatment reduces aggregation‐caused quenching, photoluminescence quantum yield exciton lifetime film. combination above properties reduced trap density improved carrier transport in 3,6TTBr‐treated devices contributed PCE 20.1%. To validate broad applicability findings, 1,5‐dibromonaphthalene (1,5‐BN), another solid, explored. 1,5‐BN achieved an impressive 20.5%, verifying validity strategy boosting OSC performances.

Language: Английский

Citations

3
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

13
Amplifying High‐Performance Organic Solar Cells Through Differencing Interactions of Solid Additive with Donor/Acceptor Materials Processed from Non‐Halogenated Solvent DOI Creative Commons
Muhammad Haris, Zakir Ullah, Seungjin Lee

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(35)

Published: July 16, 2024

Abstract Developing non‐halogenated solvent‐processed organic solar cells (OSCs) demands precise control over the bulk‐heterojunction (BHJ) morphology of photoactive layer. However, limited solubility halogen‐free solvents to materials hinders microstructure fine‐tuning for boosting photovoltaic performance. This study not only examines debated intermolecular interactions between DBrDIB solid additive and but also analyzes substantial influence volatile on BHJ morphological properties. The effectively restricts excessive aggregation Y6‐BO regulates phase separation, which is attributed strong with rapid quenching during formation. It then achieves a well‐mixed D/A favorable domain size, resulting in balanced dispersion D/A, ultimately leading markedly enhanced charge transfer transport as well suppressed recombination. transformative use o ‐xylene/DBrDIB solvent system propels PM6:Y6‐BO PM6:Y6‐HU OSCs impressive efficiencies 17.9% 19.1%, respectively, outperforming those devices. These findings provide crucial insights into theoretical experimental areas, offering actionable guidelines designing high‐performance processed from solvent.

Language: Английский

Citations

12
Asymmetrified Benzothiadiazole‐Based Solid Additives Enable All‐Polymer Solar Cells with Efficiency Over 19 % DOI
Tianqi Chen,

Yanyi Zhong,

Tainan Duan

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 64(1)

Published: Aug. 24, 2024

Disordered polymer chain entanglements within all-polymer blends limit the formation of optimal donor-acceptor phase separation. Therefore, developing effective methods to regulate morphology evolution is crucial for achieving morphological features in organic solar cells (APSCs). In this study, two isomers, 4,5-difluorobenzo-c-1,2,5-thiadiazole (SF-1) and 5,6-difluorobenzo-c-1,2,5-thiadiazole (SF-2), were designed as solid additives based on widely-used electron-deficient benzothiadiazole unit nonfullerene acceptors. The incorporation SF-1 or SF-2 into PM6 : PY-DT blend induces stronger molecular packing via interaction, leading continuous interpenetrated networks with suitable phase-separation vertical distribution. Furthermore, after treatment SF-2, exciton diffusion lengths films are extended over 40 nm, favoring charge transport. asymmetrical characterized by an enhanced dipole moment, increases power conversion efficiency (PCE) PY-DT-based device 18.83 % due electrostatic interactions. Moreover, a ternary strategy boosts PCE SF-2-treated APSC 19 %. This work not only demonstrates one best performances APSCs but also offers approach manipulate using rational-designed additives.

Language: Английский

Citations

12
Crossbreeding Effect of Chalcogenation and Iodination on Benzene Additives Enables Optimized Morphology and 19.68% Efficiency of Organic Solar Cells DOI Creative Commons
Tao Zhou, Wenwen Jin, Yinfeng Li

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: 11(23)

Published: March 25, 2024

Abstract Volatile solid additives have attracted increasing attention in optimizing the morphology and improving performance of currently dominated non‐fullerene acceptor‐based organic solar cells (OSCs). However, underlying principles governing rational design volatile remain elusive. Herein, a series efficient are successfully developed by crossbreeding effect chalcogenation iodination for photovoltaic performances OSCs. Five benzene derivatives 1,4‐dimethoxybenzene (DOB), 1‐iodo‐4‐methoxybenzene (OIB), 1‐iodo‐4‐methylthiobenzene (SIB), 1,4‐dimethylthiobenzene (DSB) 1,4‐diiodobenzene (DIB) systematically studied, where widely used DIB is as reference. The on overall property comprehensively investigated, which indicates that versatile functional groups provided various types noncovalent interactions with host materials modulating morphology. Among them, SIB combination sulphuration enabled more appropriate blend, giving rise to highly ordered molecular packing favorable As result, binary OSCs based PM6:L8‐BO PBTz‐F:L8‐BO well ternary PBTz‐F:PM6:L8‐BO achieved impressive high PCEs 18.87%, 18.81% 19.68%, respectively, among highest values

Language: Английский

Citations

10
Synergistic strategy of rigid-bridge and flexible-bridge achieving high-performance and mechanical robustness all-Polymer solar cells DOI

Huipeng Hu,

Wen Zhou, Jiabin Liu

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 491, P. 152009 - 152009

Published: May 8, 2024

Language: Английский

Citations

7
Breaking 20% Efficiency of all‐Polymer Solar Cells via Benzo[1,2‐d:4,5‐d′]Bisthiazole‐Based Terpolymer Donor Strategy for Fine Morphology Optimization DOI Open Access

Wuke Qiu,

Chentong Liao,

Yinfeng Li

et al.

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

Published: March 15, 2025

Abstract Developing high‐performance all‐polymer solar cells (all‐PSCs) remains a challenge due to the difficulty in controlling morphology of polymer blends. In this study, benzo[1,2‐d:4,5‐d′]bisthiazole (BBTz) is incorporated into PM6 main chain create series terpolymer donors, leveraging entropy increase and superior miscibility with acceptors modulate blend morphology. The introduction BBTz broadened absorption range, enhanced film crystallinity, significantly improved donor‐acceptor through its low dipole moment high electrostatic potential. This facilitated formation nanofiber structures active layer, thus optimizing As result, PBZ‐10:PY‐IT‐based device achieved an impressive power conversion efficiency (PCE) 19.06%. Incorporation PBQx‐TF binary can further improve morphology, charge transport, exciton lifetime, dissociation, collection, as well suppressed recombination, finally leading record‐breaking PCE 20.04% for all‐PSCs date. findings demonstrate effectiveness strategy enhancing all‐PSC performance. By molecular design component selection, approach provides viable pathway achieving higher supports advancement renewable energy technologies.

Language: Английский

Citations

1
Morphology Control Realizes Fast Charge Dissociation and Transport in High-Performance All-Polymer Solar Cells DOI

Yushou Zhao,

Junying Wu, Wenming Li

et al.

ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: 7(9), P. 4180 - 4189

Published: April 16, 2024

The difficulty in controlling the morphology of active layer is a major factor for hindering improvement photovoltaic performance all-polymer solar cells (all-PSCs). Here, we introduced two kinds high-boiling-point solvent additives, 1,8-diiodooctane (DIO) and 1-chloronaphthalene (CN), to control donor/acceptor blends, thereby improving film formation crystallization kinetics molecular orientation all-PSCs. In this study, effectiveness additives examined. Moreover, it was found that selectivity affected all-PSCs, improper could significantly reduce power conversion efficiencies (PCEs). Through using an system with D18-Cl as polymer donor PY-IT acceptor, CN-treated device exhibited poor PCE, while those employing DIO improved phase separation layer, resulting impressive PCE 16.0%. Importantly, DIO-treated D18-Cl:PY-IT realize faster charge dissociation transport well lower bimolecular recombination. Furthermore, corresponding devices excellent storage stability, retaining over 80% their initial efficiency after 3000 h nitrogen-atmosphere glovebox, which potentially beneficial future commercial application.

Language: Английский

Citations

6