The art and science of translucent color organic solar cells

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

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Polymer-like tetramer acceptor enables stable and 19.75% efficiency binary organic solar cells

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

Published: Feb. 20, 2025

Abstract Limited by large batch differences and inferior polymerization degree of current polymer acceptors, the potential high efficiency stability advantages all-polymer solar cells (all-PSCs) cannot be fully utilized. Alternatively, largely π-extended structurally definite oligomer acceptors are effective strategies to realize overall performance acceptors. Herein, we report a linear tetramer acceptor namely 4Y-BO with identical molecular skeleton comparable molecular-weight relative control PY-BO. The shows refined film-forming kinetics improved ordering, offering uniform crystallinity donor hence well-defined fibrous heterojunction textures. Encouragingly, PM6:4Y-BO devices achieve an up 19.75% (certified efficiency:19.58%), surpassing that PM6:PY-BO device (15.66%) ranks highest among based on More noticeably, thermal stability, photostability mechanical flexibility collectively enhanced for devices. Our study provides important approach fabricating stable organic photovoltaics.

Language: Английский

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Device Performance of Emerging Photovoltaic Materials (Version 5)

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

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Preparation of Dual-Asymmetric Acceptors via Selenium Substitution Combined with Terminal Group Optimization Strategy for High Efficiency Organic Solar Cells

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

Improving both the open-circuit voltage (VOC) and short-circuit current density (JSC) through development of photovoltaic materials to achieve high power conversion efficiency (PCE) is critical a significant challenge for organic solar cells (OSCs). Here, we designed novel dual-asymmetric acceptors A-SSe-TCF A-SSe-LSF by simultaneously asymmetrically regulating backbone terminal groups investigated their synergistic effects on performance in comparison with monoasymmetric acceptor A-SSe-4F. The exhibit broader spectral absorption larger half-molecule dipole moment differences, which favored enhancement JSC reduction energy loss (Eloss). Among binary blends, PM6:A-SSe-TCF exhibits superior phase separation, vertical distribution morphology, more ordered π-π stacking compared PM6:A-SSe-LSF PM6:A-SSe-4F. As result, OSCs based achieved higher PCE 18.53% VOC due suppressed nonradiative recombination enhanced charge extraction capabilities. Furthermore, incorporating as third component, PM6:L8-BO:A-SSe-TCF-based device achieves champion 19.73% without account decrement Eloss. strategy provides new insights into molecular design improvement OSCs.

Language: Английский

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Regulating Molecular Structure of S,N‐Heteroacene Non‐fullerene Acceptors to Achieve Efficient Photoelectric Properties^†

Chinese Journal of Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 16, 2024

Comprehensive Summary The ternary strategy has demonstrated its efficacy in improving charge transport organic solar cells (OSCs). Here, three novel non‐fullerene acceptors, SN6C9‐4F, SN6C9‐4Cl and SN6C10‐4F, based on S,N‐heteroacene linear backbone were designed synthesized. acceptors exhibit excellent molecular coplanarity, high crystallinity possess a deep‐lying lowest unoccupied orbital energy level, which is beneficial for injection field‐effect transistors (OFETs). Notably, the OFET devices all achieved impressive electron mobilities, with SN6C10‐4F achieving up to 0.73 cm 2 ·V –1 ·s , one of highest values among A‐D‐A type small molecules. In addition, OSCs device PBDB‐T:SN6C9‐4F exhibited best power conversion efficiency 12.07% owing optimal morphology enhanced transport. Moreover, incorporation SN6C9‐4F into efficient PM6:L8‐BO binary system form resulted extended absorption range, donor crystallization, improved more balanced transport, ultimately leading an improvement PCE from 17.78% 18.32%. This study highlights potential developing distinct structures Y‐series broaden regulate providing approach enhance OSCs.

Language: Английский

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Centimeter-scale fullerene-free tin-based perovskite solar cells achieving over 14% efficiency

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Fullerene-based materials have traditionally served as the primary electron transport layers (ETLs) in environmentally friendly tin-based perovskite solar cells (TPSCs) due to their suitable band structures. However, they suffer from limitations such high cost, complex synthetic process, low mobilities, limited interactions with Sn-based perovskites, and challenges tuning chemical electrical structures, which hindered further improvements power conversion efficiency (PCE) of TPSCs. To tackle these issues, we propose a fullerene-free TPSC architecture introduce series low-cost non-fullerene materials, i.e. fluorinated triple-acceptor polymers (named P1, P2, P3), alternative ETLs. Compared fullerene-based ETL, indene-C₆₀ bisadduct (ICBA), ETLs exhibit facile three orders magnitude higher structural flexibility. Additionally, form continuous conformal interfaces layers, enabling stronger more uniform over large-area layers. In 1-cm² TPSCs, particularly those using P3 achieve remarkable PCE 14.39%, surpassing 10.61% observed TPSCs ICBA ETL. Notably, ETL achieved record 16.06% for small area 0.04-cm² (certified at 15.90%). Furthermore, demonstrates exceptional stability, showing no significant degradation 1200 hours shelf storage maintaining nearly 86% its initial after 550 h maximum point tracking under 1-sun illumination. This enhanced stability is attributed robust hydrophobicity conferred by long alkyl side chains. Overall, this study substantiates substantial potential advancing both photovoltaic performance

Language: Английский

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Chlorinated Dithiazole‐Based Polymer Donor Enables Over 18% Efficiency for Organic Photovoltaics

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

Published: March 3, 2025

Abstract Forming an optimal donor:acceptor blend morphology with a low trap state density is highly desired to reach perfect compromise between charge generation and recombination for organic photovoltaics (OPVs), wherein polymer donor plays key role. Here, two wide bandgap donors of PN‐HD PN‐BO are reported, featuring the same low‐cost chlorinated dithiazole as electron‐withdrawing unit but varied alkyl chains on π‐bridged thiophene ring. It found that shorter chain endows merits better miscibility acceptor longer crystallization time, leading more favorable phase separation lower states (tDOS) in resulting active layer. Notably, tDOS 3.51 × 10 15 cm −3 eV −1 PN‐BO:BTP‐eC9‐based device has enabled exceptionally high photocurrent 28.59 mA −2 , thereby efficiency 18.01%, far beyond those (24.64 15.51%) PN‐HD:BTP‐eC9‐based one higher value. The work reveals relationship flexible density, providing new route efficient OPVs.

Language: Английский

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Asymmetric Acceptors with Benzotriazine Central Core Achieving 19.63% Efficiency in Organic Solar Cells

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

Published: April 21, 2025

Abstract Decreasing the symmetry of acceptors can enhance molecular dipole moment, influence intermolecular packing and has been proven to be an efficient strategy improve device performance. This study presents a new asymmetric design develop beyond conventional end group or side chain engineering. Specifically, unit, 1,2,4‐benzotriazine, is introduced as central core in Y‐series acceptors. Additionally, monophenyl with without fluorine, are substituted on core. combination yields two acceptors, H‐1 H‐2F, both which exhibit large moments strong interactions. Consequently, organic solar cells (OSCs) based D18:H‐1 D18:H‐2F achieved high power conversion efficiencies (PCEs) 18.56% 18.85%, respectively. By incorporating BO‐4Cl into blend, ternary remarkable efficiency 19.63% due extended absorption improved morphology. work establishes easily modifiable highlights advantages demonstrates their potential OSCs.

Language: Английский

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A Nature-Inspired Metal-Free Electrocatalyst towards Efficient Electron Transfer and Robust Cascade Oxygen Reduction for Wastewater Treatment

Water Research, Journal Year: 2025, Volume and Issue: 282, P. 123747 - 123747

Published: April 28, 2025

Language: Английский

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Utilizing Zinc Oxide and Fluorescent Agent as a Versatile Electron Transport Layer for Highly Efficient and Stable Inverted Polymer Solar Cells

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

Published: May 13, 2025

The development of excellent electron transport layers (ETLs) is crucial for high-performance organic solar cells (OSCs). In this work, we have developed a novel, versatile ETL composed zinc oxide (ZnO) and fluorescent agent to enhance the photovoltaic performance photostability OSCs. Unlike bulk doping ZnO interlayer, use conjugated small-molecule agent, sodium 2,2'-([1,1'-biphenyl]-4,4'-diyldivinylene)-bis(benzenesulfonate) (CBS), modify surface thus construct ZnO/CBS bilayer structure. shows lower work function, which beneficial extraction. Moreover, photoinduced transfer from CBS increases conductivity ZnO. Notably, fluorescence generated by can also be quenched active layer, indicating existence exciton or charge between layer. bidirectional layer synergistically improves enhances performance. Consequently, PM6:eC9 PM6:L8-BO based OSCs with as achieve power conversion efficiencies 17.42 18.16%, respectively, are among highest levels in inverted thickness insensitivity PM6:eC9-based still exhibit high PCE 15.66% at thick-film 130 nm 20 CBS. addition, modification efficiently blocks ultraviolet light reduces catalytic activity thereby enhancing

Language: Английский

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