Simultaneously Optimizing Molecular Stacking and Phase Separation via Solvent‐Solid Hybrid Additives Enables Organic Solar Cells with over 19% Efficiency† DOI

Haicui Liu,

Keli Shi, Jing Lai

et al.

Chinese Journal of Chemistry, Journal Year: 2024, Volume and Issue: 42(24), P. 3234 - 3242

Published: Sept. 24, 2024

Comprehensive Summary Given the crucial role of film morphology in determining photovoltaic parameters organic solar cells (OSCs), solvent or solid additives have been widely used to realize fine‐tuned morphological features further improve performance OSCs. However, most high‐performance OSCs are processed only using single component additive, either additive additive. Herein, a simple molecular building block, namely thieno[3,4‐ b ]thiophene (TT), was utilized as coordinate with 1‐chloronaphthalene (CN), modulate morphology. Systematical investigations revealed that addition TT could prevent excessive aggregation form delicate nanoscale phase separation, leading enhanced charge transport and suppressed recombination, well superior performance. Consequently, PM6:Y6 based hybrid CN + demonstrated optimal PCE 18.52%, notable FF 79.6%. More impressively, PM6:Y6:PC 71 BM ternary treated delivered remarkable efficiency 19.05%, which ranks among best values Y6‐based reported so far. This work highlights importance strategy regulating active layer towards significantly improved

Language: Английский

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
Solid Additive Engineering for Next‐generation Organic Photovoltaics DOI
Dingqin Hu, Hua Tang, Chen Chen

et al.

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

Published: Oct. 22, 2024

Abstract Solution‐processed bulk heterojunction (BHJ) organic solar cells (OSCs) have emerged as a promising next‐generation photovoltaic technology. In this emerging field, there is growing trend of employing solid additives (SAs) to fine‐tune the BHJ morphology and unlock full potential OSCs. SA engineering offers several significant benefits for commercialization, including ability i) control film‐forming kinetics expedite high‐throughput fabrication, ii) leverage weak noncovalent interactions between materials enhance efficiency stability OSCs, iii) simplify procedures facilitate cost‐effective production scaling‐up. These features make key catalyst accelerating development Recent breakthroughs shown that can achieve an 19.67% in single‐junction demonstrating its effectiveness promoting commercialization devices. This review provides comprehensive overview pivotal contributions SAs, focusing on their roles governing dynamics, stabilizing phase separation, addressing other crucial aspects. The rationale design rules SAs highly efficient stable OSCs are also discussed. Finally, remaining challenges summarized, perspectives future advances offered.

Language: Английский

Citations

12
Side‐chain symmetry‐breaking strategy on porphyrin donors enables high‐efficiency binary all‐small‐molecule organic solar cells DOI Creative Commons

Wentao Zou,

Xu Zhang,

Haojiang Shen

et al.

SusMat, Journal Year: 2024, Volume and Issue: 4(3)

Published: May 10, 2024

Abstract Side‐chain symmetry‐breaking strategy plays an important role in developing photovoltaic materials for high‐efficiency all‐small‐molecule organic solar cells (ASM OSCs). However, the power conversion efficiencies (PCEs) of ASM OSCs still lag behind their polymer‐based counterparts, which can be attributed to difficulties achieving favorable morphology. Herein, two asymmetric porphyrin‐based donors named DAPor‐DPP and DDPor‐DPP were synthesized, presenting stronger intermolecular interaction closer molecular stacking compared symmetric ZnP‐TEH. The DAPor‐DPP:6TIC blend afforded a morphology with nanoscale phase separation more ordered packing, thus efficient charge transportation suppressed recombination. Consequently, DAPor‐DPP:6TIC‐based device exhibited superior parameters, yielding champion PCE 16.62% higher than that DDPor‐DPP‐based (14.96%). To our knowledge, ranked as one highest values among binary OSC filed. This work provides prospective approach address challenge improving film further high efficiency via side‐chain strategy, exhibiting great potential constructing OSCs.

Language: Английский

Citations

11
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

2
Achieving 19.4% Efficiency Polymer Solar Cells by Reducing Backbone Disorder in Donor Terpolymers DOI
Guangjun Zhang,

Qingxing Wu,

Yuwei Duan

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(48)

Published: Aug. 6, 2024

Abstract The ternary copolymerization strategy has emerged as a promising for developing high‐efficiency donor polymers in polymer solar cells (PSCs). Terpolymers based on the star PM6 have already realized good photovoltaic performance. However, challenges such intricate synthesis of fluorine‐substituted benzodithiophene (F‐BDT) unit and entropy increase induced by backbone disorder hindered construction high‐performance terpolymers. In this work, these are addressed opting cost‐effective chlorinated‐substituted (Cl‐BDT) an alternative to F‐BDT incorporating large dipole moment electron‐deficient TPD group third component into PM7. As expected, approach effectively suppresses terpolymer while enhancing crystallinity, thereby optimizing morphology improving charge generation transport. Remarkably, PM7‐TPD‐10‐based device with 10% replacement achieves champion power conversion efficiency (PCE) 18.26%. After introducing PM7‐TPD‐10 D18:L8‐BO blend, dual mechanism 19.40% is realized. This work demonstrates that high moiety construct terpolymers important suppress facilitating optimization

Language: Английский

Citations

9
Polythiophene and its derivatives for all-polymer solar cells DOI

Qingqing Bai,

Yanxiang Cheng, Wei Wang

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(27), P. 16251 - 16267

Published: Jan. 1, 2024

We review polythiophene and its derivative (PT)-based polymer donors for all-PSCs, focusing on material design, morphology optimization strategies, the selection design of acceptors that complement their properties.

Language: Английский

Citations

7
Molecular Design and Organic Photovoltaic Applications of Carboxylate‐Functionalized P‐type Polymers DOI

Mengzhen Du,

Xianda Li,

Chenyu Mu

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(38)

Published: May 22, 2024

Abstract The significant progress of p‐type and n‐type active layer materials in the past several years has pushed power conversion efficiency (PCE) organic solar cells (OSCs) toward 19%. Due to relatively low synthesis cost simple method carboxylate‐containing building blocks, including thiophene, thieno[3,2‐b]thiophene, thieno[3,4‐b]thiophene, furan, pyrazine, benzodithiophene, benzothiazole, quinoxaline, etc., are widely used construct photovoltaic polymers. These resulting carboxylate‐bearing polymers present downward energy levels, high absorption coefficient, narrow bandgap, hole mobility, strong aggregation behavior, which have dabbled fabrication mechanically stretchable, semitransparent, indoor, tandem OSCs, produce excellent performance. low‐cost copolymers exhibit a satisfying PCE approaching 17%, random terpolymer systems achieve over This review focuses on polymers, summarizes molecular characteristics, discusses their structure‐performance relationship, offers summary outlook challenges for future development.

Language: Английский

Citations

4
Unravel the Distinctive Roles of Liquid and Solid Additives in Blade‐Coated Active Layer for Organic Solar Cell Modules DOI

Adiljan Wupur,

Yaokai Li,

Yongmin Luo

et al.

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

Published: Sept. 24, 2024

Abstract Although encouraging progress in spin‐coated small‐area organic solar cells (OSCs), reducing efficiency loss caused by differences film uniformity and morphology when up‐scaled to large‐area modules through meniscus‐guided coating is an important but unsolved issue. In this work, in‐depth research conducted on the influence of both liquid solid additives active layer blade‐coated PM6:L8‐BO binary system. The study reveals that high boiling point like 1,8‐diiodooctane (DIO) used blade‐coating not only delay volatilization solvent also trigger Marangoni flow same direction as capillary flow, causing excessive aggregation acceptors, therefore destroying device performance. On contrary, additive 2‐Iododiphenyl ether (IDPE), which first reported can preserve mechanism for improving performance while effectively suppressing acceptors during film‐forming process from halogen‐free toluene, resulting highly homogeneous films. Consequently, with impressive 15.34% a total module area 18.90 cm 2 via based are achieved. This provides deep understanding effect perspective fluid mechanisms gives pathway development green printed high‐efficiency OSCs.

Language: Английский

Citations

4
Solution-Processed Thin Film Transparent Photovoltaics: Present Challenges and Future Development DOI Creative Commons
Tianle Liu,

Munerah M. S. Almutairi,

Jie Ma

et al.

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 17(1)

Published: Oct. 23, 2024

Electrical energy is essential for modern society to sustain economic growths. The soaring demand the electrical energy, together with an awareness of environmental impact fossil fuels, has been driving a shift towards utilization solar energy. However, traditional solutions often require extensive spaces panel installation, limiting their practicality in dense urban environment. To overcome spatial constraint, researchers have developed transparent photovoltaics (TPV), enabling windows and facades vehicles buildings generate electric Current TPV advancements are focused on improving both transparency power output rival commercially available silicon panels. In this review, we first briefly introduce wavelength- non-wavelength-selective strategies achieve transparency. Figures merit theoretical limits TPVs discussed comprehensively understand status current technology. Then highlight recent progress different types TPVs, particular focus solution-processed thin-film (PVs), including colloidal quantum dot PVs, metal halide perovskite PVs organic PVs. applications also reviewed, emphasis agrivoltaics, smart facades. Finally, challenges future opportunities research pointed out.

Language: Английский

Citations

4
1,4-Dimethoxynaphthalene as a Solid Additive for Improved Photovoltaic Performance in Organic Solar Cells DOI
Yuanyuan Liu, Shiqi Ye, Huiqiu Deng

et al.

ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 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.

Language: Английский

Citations

0