Cyanobenzene‐Modified Quinoxaline‐Based Acceptors with Optimal Excitonic Behavior Enable Efficient Organic Solar Cells DOI

Xinya Ran,

Chi Zhang,

Dingding Qiu

et al.

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

Published: May 22, 2025

Abstract Cyanogroup (‐CN) is a strongly electron‐withdrawing and highly polar functional group; therefore, cyanation has been extensively utilized to optimize the terminal groups of high‐performance small‐molecule acceptors (SMAs) in organic solar cells (OSCs). Herein, by regulating cyanobenzene substitution central core for first time, four novel SMAs are synthesized, named phCN‐F, phCN‐Cl, 2phCN‐F, 2phCN‐Cl. Theoretical experimental analyses have shown that asymmetric symmetric cyanobenzene‐substitution core, coupled with selective groups, can significantly affect intrinsic excitonic properties molecule. Blends based on molecules possess tighter molecular packing more suitable phase separation facilitate exciton dissociation, charge transport, extraction. The optimal device performance phCN‐F‐based OSC reaches 20.16%, which higher than symmetrically substituted OSCs. Furthermore, devices prepared phCN‐F maintain over 90% their initial efficiency after being heated at 85°C 3000 h, demonstrating excellent thermal stability. This study elucidates potential mechanisms optimizing through providing valuable insights further design record‐breaking SMAs.

Language: Английский

Molecular interaction induced dual fibrils towards organic solar cells with certified efficiency over 20% DOI Creative Commons
Chen Chen, Liang Wang,

Weiyi Xia

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Aug. 10, 2024

The nanoscale fibrillar morphology, featuring long-range structural order, provides abundant interfaces for efficient exciton dissociation and high-quality pathways effective charge transport, is a promising morphology high performance organic solar cells. Here, we synthesize thiophene terminated non-fullerene acceptor, L8-ThCl, to induce the fibrillization of both polymer donor host that surpasses 20% efficiency milestone After adding original weak less continuous nanofibrils donors, i.e. PM6 or D18, are well enlarged refined, whilst acceptor L8-BO also assembles into with enhanced order. By adapting layer-by-layer deposition method, order can be retained significantly boost power conversion efficiency, specific values 19.4% 20.1% PM6:L8-ThCl/L8-BO:L8-ThCl D18:L8-ThCl/L8-BO:L8-ThCl devices, latter being certified 20.0%, which highest reported so far single-junction

Language: Английский

Citations

145
Halogenation Strategy of Thiophene Derived Solvent Additives Enables Optimized Morphology for Organic Solar Cells with 19.17% Efficiency DOI

Wenyan Su,

Xuming Zhou,

Ze‐Fan Yao

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(19)

Published: Jan. 14, 2024

Abstract As simple and versatile tools, additives have been widely used to refine active layer morphology played a crucial role in boosting the power conversion efficiency (PCE) of organic solar cells (OSCs). Herein, three novel solvent named Th‐FSi, Th‐ClSi, Th‐BrSi with same backbone 2,5‐bis(trimethylsilyl)thiophene are designed synthesized by substituting different halogens fluorine, chlorine, bromine, respectively. Notably, Th‐ClSi exhibits more significant dipole moment engages non‐covalent interactions small‐molecule acceptor (SMA) L8‐BO, which slight adjustments intermolecular interaction, crystallinity, molecular packing PM6:L8‐BO layer. Consequently, OSCs incorporating outperform their Th‐FSi counterparts photo‐capturing, reduced energy loss, superior exciton dissociation, charge transfer properties, out‐coming yields an enhanced PCE 18.29%. Moreover, integrating near‐infrared absorbing SMA (BTP‐eC9) guest into matrix, absorption spectrum span 880–930 nm, resultant ternary achieve commendable 19.17%, ranking among highest efficiencies reported date is expanded. These findings underscore promise halogenated thiophene‐based as potent avenue for morphological fine‐tuning consequent enhancement OSCs.

Language: Английский

Citations

37
Optically Enhanced Semitransparent Organic Solar Cells with Light Utilization Efficiency Surpassing 5.5% DOI

Ye‐Fan Zhang,

Wei‐Shuo Chen,

Jingde Chen

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(24)

Published: April 2, 2024

Abstract Converting non‐visual light into photocurrent while maintaining high visual transparency is vital for semitransparent organic solar cells (ST‐OSCs) application, yet often challenging over insufficient invisible light‐harvesting. Herein, spectrally selective optical manipulation ST‐OSCs with and full‐spectral reflection proposed by matching the admittance of ultrathin Ag films using ZnS MgF 2 . The optically enhanced at spectral region beyond human eye's response spectrum improved transmission in simultaneously enhanced. By further integrating an anti‐reflective structure, optimal structure boosts average visible transmittance power conversion efficiency to 44.3% 12.6%, respectively, yielding a record utilization 5.6%. Corresponding flexible mechanical stability implies that this work provides facile universal strategy aiming building integrated photovoltaics.

Language: Английский

Citations

19
The art and science of translucent color organic solar cells DOI Creative Commons
Baozhong Deng, Yi Li,

Zhouyi Lu

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 11, 2025

The artistic and scientific perspectives of the translucent color organic solar cells (OSCs), made with emerging narrowband nonfullerene acceptors are explored. OSCs, comprising a Fabry–Pérot microcavity optical coupling layer, have power conversion efficiency >15% maximum transparency >20% for three primary colors. performance−color relationship OSCs is analyzed using combination high-throughput computing experimental optimization, allowing light desired to pass through, while absorbing enough generate electricity. Replication Piet Mondrian's artwork "Composition C (1920)" demonstrated 10 × cm2-sized OSC module wide palette colors hues. outcome work offers an opportunity function as both esthetic art generating windowpanes use in our homes, offices, even greenhouses. realization competitive efficiency, visible hue remains critical challenge. Here, authors fabricate layer applications science art.

Language: Английский

Citations

6
Regulating Electron‐Phonon Coupling by Solid Additive for Efficient Organic Solar Cells DOI

Zhongwei Ge,

Jiawei Qiao,

Yun Li

et al.

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

Published: Aug. 30, 2024

Strong electron-phonon coupling can hinder exciton transport and induce undesirable non-radiative recombination, resulting in a shortened diffusion distance constrained dissociation organic solar cells (OSCs). Therefore, suppressing is crucially important for achieveing high-performance OSCs. Here, we employ the solid additive to regulating The planar configuration of SA1 confers significant advantage lattice vibrations active layers, reducing scattering excitons by phonons. Consequently, slow but sustained hole transfer process identified SA1-assisted film, indicating an enhancement efficiency. Prolonged length lifetime are achieved blend film processed with SA1, attributed low recombination rate energetic disorder charge carrier transport. As result, high efficiency 20 % was ternary device remarkable short-circuit current. This work highlights role improving photovoltaic performance

Language: Английский

Citations

13
Wavelength-selective solar photovoltaic systems to enhance spectral sharing of sunlight in agrivoltaics DOI Creative Commons
Silvia Ma Lu, Stefano Amaducci, Shiva Gorjian

et al.

Joule, Journal Year: 2024, Volume and Issue: 8(9), P. 2483 - 2522

Published: Sept. 1, 2024

Language: Английский

Citations

12
Enhanced charge collection of AgNWs-based top electrode to realize high-performance, all-solution processed organic solar cells DOI
Juanyong Wan, Yang Chen, Weijie Chen

et al.

Science China Chemistry, Journal Year: 2024, Volume and Issue: 67(10), P. 3347 - 3356

Published: Aug. 13, 2024

Language: Английский

Citations

10
Recent progress in semitransparent organic solar cells DOI

Zonghao Wu,

Hang Yin, Gang Li

et al.

Organic Electronics, Journal Year: 2024, Volume and Issue: 129, P. 107060 - 107060

Published: April 30, 2024

Citations

9
Intrinsically Stretchable Organic Solar Cells and Sensors Enabled by Extensible Composite Electrodes DOI
Dexia Han, Kangkang Zhou, Xin Li

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(44)

Published: Aug. 7, 2024

Abstract Stretchable electrodes are critical to the development of advanced technologies such as human–machine interaction, flexible sensing, and wearable power supply, making them significant research value. However, current preparation methods for high‐performance stretchable complex inefficient, posing challenges their large‐scale application in realm wearables. To address this need, a straightforward efficient embedding strategy is reported fabricating silver nanowire/thermoplastic elastomer composite (referred Strem‐AT) utilizing viscoelasticity outstanding mechanical properties polymer elastomers achieve extensibility, conductivity, smooth surface. These exhibit excellent tensile behavior, low surface roughness, stable electrical properties, enabling successful integration into sensors intrinsically organic photovoltaic cells (IS‐OPV). When applied human skin joints motion detection, sensor demonstrates remarkable stretchability signal output. Importantly, all‐polymer IS‐OPV exhibits top‐notch conversion efficiency (PCE) >12.5% PCE 80% strain exceeding 50%. Furthermore, even after subjecting high‐strain stretching at 50% 1000 cycles, can retain 76% initial PCE. This study presents multifunctional electrode with high repeatability easy‐to‐scale fabrication photovoltaics.

Language: Английский

Citations

9
Device Performance of Emerging Photovoltaic Materials (Version 5) DOI Creative Commons
Osbel Almora, Guillermo C. Bazan, Carlos I. Cabrera

et al.

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

Published: Nov. 26, 2024

Abstract This 5th annual “ Emerging PV Report” highlights the latest advancements in performance of emerging photovoltaic (e‐PV) devices across various e‐PV research areas, as documented peer‐reviewed articles published since August 2023. Updated graphs, tables, and analyses are provided, showcasing several key parameters, including power conversion efficiency, open‐circuit voltage, short‐circuit current, fill factor, light utilization stability test energy yield. These parameters presented functions bandgap average visible transmittance for each technology application contextualized using benchmarks such detailed balance efficiency limit.

Language: Английский

Citations

7