Organic solar cells using oligomer acceptors for improved stability and efficiency

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

Published: Nov. 10, 2022

Language: Английский

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Achieving high efficiency and well-kept ductility in ternary all-polymer organic photovoltaic blends thanks to two well miscible donors

Matter, Journal Year: 2022, Volume and Issue: 5(2), P. 725 - 734

Published: Jan. 4, 2022

Language: Английский

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Dimerized small-molecule acceptors enable efficient and stable organic solar cells

Joule, Journal Year: 2023, Volume and Issue: 7(2), P. 416 - 430

Published: Feb. 1, 2023

Language: Английский

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Non-fullerene acceptors with hetero-dihalogenated terminals induce significant difference in single crystallography and enable binary organic solar cells with 17.5% efficiency

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 15(1), P. 320 - 333

Published: Oct. 6, 2021

A synergistic hetero-dihalogenated terminals strategy was systematically employed for the first time to enhance single-crystal packing, boosting device performance of a Y-BO-FCl:PM6 with remarkable PCE 17.52%.

Language: Английский

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Material Design and Device Fabrication Strategies for Stretchable Organic Solar Cells

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(31)

Published: June 28, 2022

Abstract Recent advances in the power conversion efficiency (PCE) of organic solar cells (OSCs) have greatly enhanced their commercial viability. Considering technical standards (e.g., mechanical robustness) required for wearable electronics, which are promising application platforms OSCs, development fully stretchable OSCs (f‐SOSCs) should be accelerated. Here, a comprehensive overview f‐SOSCs, aimed to reliably operate under various forms stress, including bending and multidirectional stretching, is provided. First, requirements terms tensile cohesion/adhesion properties, summarized along with experimental methods evaluate those properties. Second, essential studies make each layer f‐SOSCs efficient discussed, emphasizing strategies simultaneously enhance photovoltaic properties active layer, ranging from material design fabrication control. Key improvements other components/layers (i.e., substrate, electrodes, interlayers) also covered. Lastly, considering that f‐SOSC research its infancy, current challenges future prospects explored.

Language: Английский

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Polymer Acceptors with Flexible Spacers Afford Efficient and Mechanically Robust All‐Polymer Solar Cells

Advanced Materials, Journal Year: 2021, Volume and Issue: 34(6)

Published: Nov. 25, 2021

High efficiency and mechanical robustness are both crucial for the practical applications of all-polymer solar cells (all-PSCs) in stretchable wearable electronics. In this regard, a series new polymer acceptors (PA s) is reported by incorporating flexible conjugation-break spacer (FCBS) to achieve highly efficient mechanically robust all-PSCs. Incorporation FCBS affords effective modulation crystallinity pre-aggregation PA s, achieves optimal blend morphology with donor (PD ), increasing photovoltaic properties particular, an all-PSC based on PYTS-0.3 incorporated 30% PBDB-T PD demonstrates high power conversion (PCE) 14.68% excellent stretchability crack onset strain (COS) 21.64% toughness 3.86 MJ m-3 , which significantly superior those devices without (PYTS-0.0, PCE = 13.01%, 2.70 ). To date, COS highest value PSCs PCEs over 8% any insulating additives. These results reveal that introduction into conjugated backbone feasible strategy simultaneously improve PSCs.

Language: Английский

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Stability of organic solar cells: toward commercial applications

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(5), P. 2350 - 2387

Published: Jan. 1, 2024

Organic solar cells (OSCs) have attracted a great deal of attention in the field clean energy due to their advantages transparency, flexibility, low cost and light weight. Introducing them market enables seamless integration into buildings windows, while also supporting wearable, portable electronics internet-of-things (IoT) devices. With development photovoltaic materials optimization fabrication technology, power conversion efficiencies (PCEs) OSCs rapidly improved now exceed 20%. However, there is significant lack focus on material stability device lifetime, causing severe hindrance commercial applications. In this review, we carefully review important strategies employed improve over past three years from perspectives design engineering. Furthermore, analyze discuss current progress terms air, light, thermal mechanical stability. Finally, propose future research directions overcome challenges achieving highly stable OSCs. We expect that will contribute solving problem OSCs, eventually paving way for applications near future.

Language: Английский

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19.28% Efficiency and Stable Polymer Solar Cells Enabled by Introducing an NIR‐Absorbing Guest Acceptor

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(8)

Published: Jan. 6, 2023

Abstract Here, a near‐infrared (NIR)‐absorbing small‐molecule acceptor (SMA) Y‐SeNF with strong intermolecular interaction and crystallinity is developed by combining selenophene‐fused core naphthalene‐containing end‐group, then as custom‐tailor guest incorporated into the binary PM6:L8‐BO host system. shows 65 nm red‐shifted absorption compared to L8‐BO. Thanks of Y‐SeNF, morphology PM6:L8‐BO:Y‐SeNF can be precisely regulated introducing achieving improved charge‐transporting suppressed non‐radiative energy loss. Consequently, ternary polymer solar cells (PSCs) offer an impressive device efficiency 19.28% both high photovoltage (0.873 V) photocurrent (27.88 mA cm −2 ), which one highest efficiencies in reported single‐junction PSCs. Notably, PSC has excellent stability under maximum‐power‐point tracking for even over 200 h, better than its parental devices. The study provides novel strategy construct NIR‐absorbing SMA efficient stable PSCs toward practical applications.

Language: Английский

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Linker Engineering of Dimerized Small Molecule Acceptors for Highly Efficient and Stable Organic Solar Cells

ACS Energy Letters, Journal Year: 2023, Volume and Issue: 8(3), P. 1344 - 1353

Published: Feb. 8, 2023

High power conversion efficiency (PCE) and long-term stability are important requirements for commercialization of organic solar cells (OSCs). In this study, we demonstrate efficient (PCE = 18.60%) stable (t80% lifetime > 4000 h) OSCs by developing a series dimerized small-molecule acceptors (DSMAs). We prepared three different DSMAs (DYT, DYV, DYTVT) using linkers (i.e., thiophene, vinylene, thiophene– vinylene– thiophene), to connect their two Y-based building blocks. find that the crystalline properties glass transition temperature (Tg) can be systematically modulated linker selection. A DYV-based OSC achieves highest PCE (18.60%) among DSMA-based owing appropriate backbone rigidity leading an optimal blend morphology high electron mobility. Importantly, also demonstrates excellent operational under 1-sun illumination, i.e., t80% 4005 h.

Language: Английский

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Sequentially regular polymer acceptors featuring flexible spacers for high-performance and mechanically robust all-polymer solar cells

Energy & Environmental Science, Journal Year: 2022, Volume and Issue: 15(11), P. 4672 - 4685

Published: Jan. 1, 2022

We report a new molecular design of sequentially regular polymerized small-molecule-acceptors containing flexible spacer (FS) units (PYFS-Reg) to achieve all-polymer solar cells with both high-performance and mechanical stretchability.

Language: Английский

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