Binary Organic Solar Cells with over 19 % Efficiency and Enhanced Morphology Stability Enabled by Asymmetric Acceptors DOI
Shihao Chen,

Shengtian Zhu,

Ling Hong

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(12)

Published: Jan. 30, 2024

Abstract The simultaneous improvement of efficiency and stability organic solar cells (OSCs) for commercialization remains a challenging task. Herein, we designed asymmetric acceptors DT‐C8Cl DT‐C8BTz with functional haloalkyl chains, in which the halogen atoms could induce noncovalent interactions heteroatoms like O, S, Se, etc ., thus leading to appropriately manipulated film morphology. Consequently, binary devices based on D18: achieved champion power conversion (PCE) 19.40 %. higher PCE be attributed enhanced π–π stacking, improved charge transport, reduced recombination losses. In addition, induced by chains effectively suppress unfavorable morphology evolutions thereby reduce trap density states, thermal storage stability. Overall, our findings reveal that rational design is novel powerful strategy simultaneously enhancing OSCs.

Language: Английский

Renewed Prospects for Organic Photovoltaics DOI
Guichuan Zhang, Francis Lin, Qi Feng

et al.

Chemical Reviews, Journal Year: 2022, Volume and Issue: 122(18), P. 14180 - 14274

Published: Aug. 5, 2022

Organic photovoltaics (OPVs) have progressed steadily through three stages of photoactive materials development: (i) use poly(3-hexylthiophene) and fullerene-based acceptors (FAs) for optimizing bulk heterojunctions; (ii) development new donors to better match with FAs; (iii) non-fullerene (NFAs). The application NFAs an A–D–A configuration (where A = acceptor D donor) has enabled devices efficient charge generation small energy losses (Eloss < 0.6 eV), resulting in substantially higher power conversion efficiencies (PCEs) than FA-based devices. discovery Y6-type (Y6 2,2′-((2Z,2′Z)-((12,13-bis(2-ethylhexyl)-3,9-diundecyl-12,13-dihydro-[1,2,5]-thiadiazolo[3,4-e]-thieno[2″,3″:4′,5′]thieno-[2′,3′:4,5]pyrrolo-[3,2-g]thieno-[2′,3′:4,5]thieno-[3,2-b]indole-2,10-diyl)bis(methanylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile) A–DA′ D–A further propelled the PCEs go beyond 15% due smaller Eloss values (∼0.5 eV) external quantum efficiencies. Subsequently, Y6-series single-junction increased >19% may soon approach 20%. This review provides update recent progress OPV following aspects: developments novel donors, understanding structure–property relationships underlying mechanisms state-of-the-art OPVs, tasks underpinning commercialization such as device stability, module development, potential applications, high-throughput manufacturing. Finally, outlook prospects section summarizes remaining challenges technology.

Language: Английский

Citations

661
Recent progress in organic solar cells (Part I material science) DOI
Yahui Liu, Bowen Liu, Chang‐Qi Ma

et al.

Science China Chemistry, Journal Year: 2021, Volume and Issue: 65(2), P. 224 - 268

Published: Dec. 27, 2021

Language: Английский

Citations

505
Organic solar cells using oligomer acceptors for improved stability and efficiency DOI
Youcai Liang, Difei Zhang,

Zerun Wu

et al.

Nature Energy, Journal Year: 2022, Volume and Issue: 7(12), P. 1180 - 1190

Published: Nov. 10, 2022

Language: Английский

Citations

271
Asymmetric electron acceptor enables highly luminescent organic solar cells with certified efficiency over 18% DOI Creative Commons

Chengliang He,

Zeng Chen, Tonghui Wang

et al.

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: May 11, 2022

Enhancing the luminescence property without sacrificing charge collection is one key to high-performance organic solar cells (OSCs), while limited by severe non-radiative recombination. Here, we demonstrate efficient OSCs with high via design and synthesis of an asymmetric non-fullerene acceptor, BO-5Cl. Blending BO-5Cl PM6 donor leads a record-high electroluminescence external quantum efficiency 0.1%, which results in low voltage loss 0.178 eV power conversion (PCE) over 15%. Importantly, incorporating as third component into widely-studied donor:acceptor (D:A) blend, PM6:BO-4Cl, allows device displaying certified PCE 18.2%. Our joint experimental theoretical studies unveil that more diverse D:A interfacial conformations formed acceptor induce optimized blend energetics, contributes improved performance balancing generation

Language: Английский

Citations

195
Recent progress in organic solar cells based on non-fullerene acceptors: materials to devices DOI
Dou Luo, Woongsik Jang, Dickson D. Babu

et al.

Journal of Materials Chemistry A, Journal Year: 2022, Volume and Issue: 10(7), P. 3255 - 3295

Published: Jan. 1, 2022

This review presents the recent progress in organic solar cells based on non-fullerene acceptors, with a wide coverage from material synthesis and processing to interface engineering, device structure, large-area fabrication, stability.

Language: Английский

Citations

169
Polythiophenes for organic solar cells with efficiency surpassing 17% DOI Creative Commons

Xiyue Yuan,

Yunli Zhao,

Dongsheng Xie

et al.

Joule, Journal Year: 2022, Volume and Issue: 6(3), P. 647 - 661

Published: March 1, 2022

Language: Английский

Citations

163
Recent Progress of Y6‐Derived Asymmetric Fused Ring Electron Acceptors DOI
Youdi Zhang,

Yutong Ji,

Yingyue Zhang

et al.

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(35)

Published: July 5, 2022

Abstract Symmetric conjugated molecules can be broken through suitable synthetic strategies to construct novel asymmetric molecules, which largely broaden the material library. In field of organic solar cells, fused‐ring electron acceptors (FREAs) with A‐DA'D‐A type backbone structure have attracted much attention and enabled power conversion efficiencies (PCE) exceeding 18%. Among them, Y6 is one most classic FREAs that derive many symmetric exhibit unique optoelectronic properties. Thus, in this review, focus on recent progress Y6‐derived containing a dipyrrolobenzothiadiazole segment, classified as following three categories: end group, central core side chain. The relationship molecular structure, properties, device performance discussed detail. Finally, future design directions challenges faced by kind photovoltaic materials are given.

Language: Английский

Citations

163
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
High-Efficiency Ternary Organic Solar Cells with a Good Figure-of-Merit Enabled by Two Low-Cost Donor Polymers DOI
Ruijie Ma, Cenqi Yan, Jiangsheng Yu

et al.

ACS Energy Letters, Journal Year: 2022, Volume and Issue: 7(8), P. 2547 - 2556

Published: July 13, 2022

Here, we combine two donor polymers with a relatively short synthesis method and fabricate ternary organic solar cells (OSCs) high efficiency decent figure-of-merit. A series of characterizations show that the optimal morphology blend is result coupling competition PTQ10 PTVT-T, where molecular packing phase separation motif broken but strong aggregation PTVT-T suppressed, resulting in efficient charge transport collection, as well suppressed bimolecular recombination. Moreover, previously reported solvent-vapor-assisted casting method, taken an understanding-guided optimization, pushes system's to 19.11%. Furthermore, PTVT-T-containing systems clearly better light soaking thermal stability than binary control system, benefiting from durable polymer matrix. Our work provides useful approach for developing efficient, stable, low-cost OSCs based on state-of-the-art donor/acceptor through design.

Language: Английский

Citations

135
Dynamics of Excitons in Conjugated Molecules and Organic Semiconductor Systems DOI
Oleg P. Dimitriev

Chemical Reviews, Journal Year: 2022, Volume and Issue: 122(9), P. 8487 - 8593

Published: March 17, 2022

The exciton, an excited electron-hole pair bound by Coulomb attraction, plays a key role in photophysics of organic molecules and drives practically important phenomena such as photoinduced mechanical motions molecule, photochemical conversions, energy transfer, generation free charge carriers, etc. Its behavior extended π-conjugated disordered films is very different rich compared with exciton inorganic semiconductor crystals. Due to the high degree variability systems themselves, not only exerts changes on that carry it but undergoes its own during all phases lifetime, is, birth, conversion transport, decay. goal this review give systematic comprehensive view molecular assemblies at evolution emphasis rates typical for dynamic picture various consequences above dynamics. To uncover variety behavior, details formation, conversion, direct reverse intersystem crossing, radiative nonradiative decay are considered systems, where these processes lead or influenced static disorder, distribution symmetry breaking, reactions, electron proton structural rearrangements, coupling vibrations intermediate particles, dissociation annihilation well.

Language: Английский

Citations

124