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

Benzo[d]thiazole Based Wide Bandgap Donor Polymers Enable 19.54% Efficiency Organic Solar Cells Along with Desirable Batch‐to‐Batch Reproducibility and General Applicability DOI
Bo Pang,

Chentong Liao,

Xiaopeng Xu

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(21)

Published: March 4, 2023

Abstract The limited selection pool of high‐performance wide bandgap (WBG) polymer donors is a bottleneck problem the nonfullerene acceptor (NFA) based organic solar cells (OSCs) that impedes further improvement their photovoltaic performances. Herein, series new WBG polymers, namely PH‐BTz, PS‐BTz, PF‐BTz, and PCl‐BTz, are developed by using bicyclic difluoro‐benzo[d]thiazole (BTz) as block benzo[1,2‐b:4,5‐b′]dithiophene (BDT) derivatives donor units. By introducing S, F, Cl atoms to alkylthienyl sidechains on BDT, resulting polymers exhibit lowered energy levels enhanced aggregation properties. fluorinated PBTz‐F not only exhibits low‐lying HOMO level, but also has stronger face‐on packing order results in more uniform fibril‐like interpenetrating networks related PF‐BTz:L8‐BO blend. A high‐power conversion efficiency (PCE) 18.57% achieved. Moreover, good batch‐to‐batch reproducibility general applicability. In addition, ternary blend OSCs host PBTz‐F:L8‐BO PM6 guest PCE 19.54%, which among highest values OSCs.

Language: Английский

Citations

157
Interface Engineering for Highly Efficient Organic Solar Cells DOI
Haoran Tang,

Yuanqing Bai,

Haiyang Zhao

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(16)

Published: March 3, 2023

Organic solar cells (OSCs) have made dramatic advancements during the past decades owing to innovative material design and device structure optimization, with power conversion efficiencies surpassing 19% 20% for single-junction tandem devices, respectively. Interface engineering, by modifying interface properties between different layers OSCs, has become a vital part promote efficiency. It is essential elucidate intrinsic working mechanism of layers, as well related physical chemical processes that manipulate performance long-term stability. In this article, advances in engineering aimed pursue high-performance OSCs are reviewed. The specific functions corresponding principles summarized first. Then, anode layer, cathode layer interconnecting devices discussed separate categories, engineering-related improvements on efficiency stability analyzed. Finally, challenges prospects associated application emphasis large-area, high-performance, low-cost manufacturing.

Language: Английский

Citations

147
Organic Solar Cells with Over 19% Efficiency Enabled by a 2D‐Conjugated Non‐Fullerene Acceptor Featuring Favorable Electronic and Aggregation Structures DOI
Kerui Liu, Yuanyuan Jiang, Feng Liu

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(32)

Published: May 27, 2023

The π-expansion of non-fullerene acceptors is a promising method for boosting the organic photovoltaic performance by allowing fine-tuning electronic structures and molecular packing. In this work, highly efficient solar cells (OSCs) are fabricated using 2D strategy to design new acceptors. Compared with quinoxaline-fused cores AQx-16, π-expanded phenazine-fused AQx-18 induce more ordered compact packing between adjacent molecules, affording an optimized morphology rational phase separation in blend film. This facilitates exciton dissociation inhibited charge recombination. Consequently, power conversion efficiency (PCE) 18.2% simultaneously increasing Voc , Jsc fill factor achieved AQx-18-based binary OSCs. Significantly, ternary devices via two-in-one alloy acceptor exhibit superior PCE 19.1%, one highest values ever reported OSCs, along high 0.928 V. These results indicate importance delicate regulation crystalline behaviors achieve performance, aimed at significantly promoting further development

Language: Английский

Citations

147
Donor–acceptor mutually diluted heterojunctions for layer-by-layer fabrication of high-performance organic solar cells DOI
Liang Wang, Chen Chen,

Yiwei Fu

et al.

Nature Energy, Journal Year: 2024, Volume and Issue: 9(2), P. 208 - 218

Published: Jan. 9, 2024

Language: Английский

Citations

128
Auxiliary sequential deposition enables 19%-efficiency organic solar cells processed from halogen-free solvents DOI Creative Commons
Siwei Luo, Chao Li, Jianquan Zhang

et al.

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Oct. 31, 2023

High-efficiency organic solar cells are often achieved using toxic halogenated solvents and additives that constrained in industry. Therefore, it is important to develop materials or processing methods enabled highly efficient processed by halogen free solvents. In this paper, we report an innovative method named auxiliary sequential deposition enables 19%-efficiency Our different from the conventional blend casting involves additional of dithieno[3,2-b:2',3'-d]thiophene between depositions donor (D18-Cl) acceptor (L8-BO) layers. The dramatic performance enhancement 15% over 18% compared methods. Furthermore, incorporating a branched-chain-engineered called L8-BO-X, device can be boosted 19% due increased intermolecular packing, representing top-tier values for green-solvent cells. Comprehensive morphological time-resolved characterizations reveal superior morphology through promotes charge generation while simultaneously suppressing recombination. This research underscores potential fabricating environmentally friendly

Language: Английский

Citations

126
Over 17.4% Efficiency of Layer‐by‐Layer All‐Polymer Solar Cells by Improving Exciton Utilization in Acceptor Layer DOI
Wenjing Xu, Miao Zhang, Xiaoling Ma

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(28)

Published: March 27, 2023

Abstract Layer‐by‐layer all‐polymer solar cells (LbL all‐PSCs) are prepared with PM6 and PY‐IT by using sequential spin coating method. The exciton dissociation efficiency in acceptor layer near electrode is rather low due to the limited diffuse distance impossible energy transfer from narrow bandgap wide donor. In this study, less incorporated into enhance electrode. A power conversion (PCE) of 17.45% achieved LbL all‐PSCs incorporating 10 wt% layer, which much larger than 16.04% PCE PM6/PY‐IT‐based all‐PSCs. Over 8% enhancement can be realized attributed enhanced utilization layers confirmed quenched photoluminescence (PL) emission PY‐IT:PM6 films. Meanwhile, charge transport optimized PM6, as molecular arrangement. This study indicates that strategy donor has great potential fabricating efficient improving

Language: Английский

Citations

85
Recent Developments of Polymer Solar Cells with Photovoltaic Performance over 17% DOI
Jianghao Jin,

Qiao Wang,

Kaige Ma

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(14)

Published: Jan. 22, 2023

Abstract With the emergence of ADA'DA‐type (Y‐series) non‐fullerene acceptors (NFAs), power conversion efficiencies (PCEs) organic photovoltaic devices have been constantly refreshed and gradually reached 20% in recent years (19% for single junction tandem device). The possess specific design concept, which greatly enrich NFA types excellent compatibility with many donor materials. It is gratifying to note that previously underperforming materials combine these regulated shine again. Nowadays, concept modular widely used research donors, injecting new vitality into field photovoltaics. Furthermore, also promote multicomponent devices, bilayer processing solvent engineering, additive engineering. Herein, latest progresses polymer solar cells efficiency over 17% are briefly reviewed from aspects active material design, interface development, device technology. At last, opportunities challenges commercialization future discussed.

Language: Английский

Citations

74
High‐Performance Small Molecule Organic Solar Cells Enabled by a Symmetric‐Asymmetric Alloy Acceptor with a Broad Composition Tolerance DOI
Yuan Gao, Xinrong Yang, Wei Wang

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(23)

Published: March 29, 2023

Abstract Using a combinatory blending strategy is demonstrated as promising path for designing efficient organic solar cells (OSCs) by boosting the short‐circuit current density and fill factor. Herein, high‐performance ternary all‐small molecule OSC (all‐SMOSCs) using narrow‐bandgap alloy acceptor containing symmetric asymmetric molecules (BTP‐eC9 SSe‐NIC) wide‐bandgap small donor MPhS‐C2 reported. Introducing synthesized SSe‐NIC into MPhS‐C2:BTP‐eC9 host system can broaden absorption spectrum, modulate energy offsets, optimize molecular packing of materials. After systematically optimizing weight ratio MPhS‐C2:BTP‐eC9:SSe‐NIC, champion efficiency 18.02% achieved. Impressively, not only delivered broad composition tolerance with device efficiencies over 17% throughout whole blend ratios, but also exhibited less non‐geminate recombination loss, better‐light‐soaking stability than corresponding binary systems. This work promotes development all‐SMOSCs heralds their brighter application prospects.

Language: Английский

Citations

72
Non‐halogenated Solvent‐Processed Organic Solar Cells with Approaching 20 % Efficiency and Improved Photostability DOI

Jiali Song,

Chen Zhang, Decheng Li

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(22)

Published: March 25, 2024

The development of high-efficiency organic solar cells (OSCs) processed from non-halogenated solvents is crucially important for their scale-up industry production. However, owing to the difficulty regulating molecular aggregation, there a huge efficiency gap between and halogenated solvent OSCs. Herein, we fabricate o-xylene OSCs with approaching 20 % by incorporating trimeric guest acceptor named Tri-V into PM6:L8-BO-X host blend. incorporation effectively restricts excessive aggregation L8-BO-X, regulates packing optimizes phase-separation morphology, which leads mitigated trap density states, reduced energy loss suppressed charge recombination. Consequently, PM6:L8-BO-X:Tri-V-based device achieves an 19.82 %, representing highest solvent-processed reported date. Noticeably, addition Tri-V, ternary shows improved photostability than binary PM6:L8-BO-X-based device, maintains 80 initial after continuous illumination 1380 h. This work provides feasible approach fabricating high-efficiency, stable, eco-friendly OSCs, sheds new light on large-scale industrial production

Language: Английский

Citations

71
Hot‐Casting Strategy Empowers High‐Boiling Solvent‐Processed Organic Solar Cells with Over 18.5% Efficiency DOI Open Access

Chucheng Yang,

Mengyun Jiang,

Shanshan Wang

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(3)

Published: Aug. 9, 2023

Abstract Most top‐rank organic solar cells (OSCs) are manufactured by the halogenated solvent chloroform, which possesses a narrow processing window due to its low‐boiling point. Herein, based on two high‐boiling solvents, chlorobenzene (CB) and non‐halogenated green ortho‐xylene (OX), preparing active layers with hot solution is put forward enhance performance of OSCs. In situ test morphological characterization clarify that hot‐casting strategy assists in fast synchronous molecular assembly both donor acceptor layer, contributing preferable donor/acceptor ratio, vertical phase separation, stacking, beneficial charge generation extraction. Based PM6:BO‐4Cl, OSCs wide achieve efficiencies 18.03% CB 18.12% OX, much higher than devices processed room temperature solution. Moreover, PM6:BTP‐eC9 deliver remarkable fill factor 80.31% efficiency 18.52% representing record value among binary solvent. This work demonstrates facile manipulate distribution arrangement for boosting solvents.

Language: Английский

Citations

62