Advances in Stretchable Organic Photovoltaics: Flexible Transparent Electrodes and Deformable Active Layer Design

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(37)

Published: May 30, 2024

Stretchable organic photovoltaics (OPVs) have attracted significant attention as promising power sources for wearable electronic systems owing to their superior robustness under repetitive tensile strains and good compatibility. However, reconciling a high power-conversion efficiency reasonable flexibility is tremendous challenge. In addition, the development of stretchable OPVs must be accelerated satisfy increasing requirements niche markets mechanical robustness. OPV devices can classified either structurally or intrinsically stretchable. This work reviews recent advances in OPVs, including design mechanically robust transparent electrodes, photovoltaic materials, devices. Initially, an overview characteristics research progress areas provided. Subsequently, into flexible electrodes that directly affect performances summarized analyzed. Overall, this review aims provide in-depth understanding intrinsic properties highly efficient deformable active while also emphasizing advanced strategies simultaneously improving performance layer, material design, multi-component settings, structural optimization.

Language: Английский

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Carboxylating Elastomer via Thiol‐Ene Click Reaction to Improve Miscibility with Conjugated Polymers for Mechanically Robust Organic Solar Cells with Efficiency of 19%

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(19)

Published: Feb. 7, 2024

Incorporating flexible insulating polymers is a straightforward strategy to enhance the mechanical properties of rigid conjugated polymers, enabling their use in electronic devices. However, maintaining characteristics simultaneously challenging due poor miscibility between and polymers. This study introduces carboxylation as an effective with via surface energy modulation hydrogen bonding. The carboxylated elastomer, synthesized thiol-ene click reaction, closely matches polymer. significantly improves properties, achieving high crack-onset strain 21.48%, surpassing that (5.93%) unmodified elastomer:conjugated polymer blend. Upon incorporating elastomer into PM6:L8-BO-based organic solar cells, impressive power conversion efficiency 19.04% attained, which top-performs among polymer-incorporated devices outperforms or neat PM6:L8-BO. superior attributed optimized microstructures enhanced crystallinity for efficient balanced charge transport, suppressed recombination. Furthermore, 5% exhibit stability, retaining ≈88.9% initial after 40 000 bending cycles at 1 mm radius, ≈83.5% elastomer.

Language: Английский

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A comprehensive review on crosslinked network systems of zinc oxide-organic polymer composites

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 274, P. 133250 - 133250

Published: June 20, 2024

Language: Английский

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Bioinspired Antiwear Poly(urea‐imide) Composites: Influence of Tribology on Polymer Crystal Structure

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 9, 2025

Abstract Polymer composite materials encounter considerable challenges in sustaining superior tribological properties at high rotational speeds. Inspired by the microstructure of dragonfly wings, a novel thermally stable and ambient pressure curing poly(urea‐imide) resin (PURI) with excellent has been eco‐friendly synthesis using bio‐based greener solvents. Furthermore, The PURI composites enhanced polyether ether ketone (PEEK) Polytetrafluoroethylene (PTFE) blended fabrics demonstrate mechanical, tensile strengths exceeding 175 MPa. synthesized green solvent dimethyl isosorbide (DMI) exhibit an average friction coefficient 0.1160 wear rate 2.7 × 10 −14 m 3 (N·m) −1 800 r min . performance is primarily attributed to molecular chain rearrangement during friction, which leads formation crystalline structures certain regions, phenomenon known as friction‐induced crystallization. This process entropy‐reducing mechanism that absorbs other forms energy, such frictional heat, process. Moreover, PTFE fibers underwent tribochemical reactions resulting changes lattice spacing contributing tribofilm. study provides new evidence regarding mechanisms polymer composites, beneficial for designing high‐performance wear‐resistant composites.

Language: Английский

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Ultra-flexible high-efficiency organic solar cells based on polyimide electrodes and all-polymer blends

Applied Physics Letters, Journal Year: 2025, Volume and Issue: 126(10)

Published: March 1, 2025

Ultra-flexible all-polymer solar cells (all-PSCs) are increasingly attracting attention as a complementary technology to traditional cells. This study developed mechanically durable ultra-flexible transparent conducting electrodes (TCEs) made of polyimide (PI)/silver nanowire (AgNW), which were integrated into all-PSCs. Tensile and bending tests showed that the PI/AgNW TCE displayed higher flexibility stability than commercial polyethylene terephthalate (PET)/indium tin oxide (ITO) with R0/R30000 1.0, Young modulus 176.7 MPa, elongation at break 12.8%. When combined non-fullerene polymer acceptor, 9′-(2,12-di-tert-butyl-5,9-dioxa-13b-boranaphtho[3,2,1-de]anthracen-7-yl)-9,9′′-diphenyl-9H,9′H,9′′H-3,3′:6′,3′′-tercarbazole (PM6):regio-regular acceptor (PYF-T-o) device exhibited highly improved flexibility, maintaining power conversion efficiency 12.42% by 99.3% after 800 cycles. performance far surpassed small molecule PM6: 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 (Y6) devices using PET/ITO TCEs. The toughening mechanisms TCEs further analyzed through finite element simulations, highlighting importance optimizing mechanical properties both active layer. underscores significant potential PI/AgNW-based all-PSCs in field

Language: Английский

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Intrinsically Stretchable Organic Solar Cells and Sensors Enabled by Extensible Composite Electrodes

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

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Synthesis of UV-resistant and colorless polyimide films for optoelectrical applications

npj Materials Degradation, Journal Year: 2024, Volume and Issue: 8(1)

Published: Jan. 11, 2024

Abstract Due to their excellent mechanical properties and intrinsic flexibility, polyimides (PIs) are promising candidates for optoelectrical applications under harsh conditions such as flexible organic solar cells well smart windows, etc. Much progress has been made on optical transmittance; however, there remain significant concerns about environmental stability, particularly UV resistance. Herein, 4 types of colorless (CPIs) with different molecular structures containing trifluoromethyl, ethers, or fluorenes carefully designed, the dependence resistance is explored systematically. It found that introduction isopropylidene, ethers effectively enhances CPI its initial performance (optical transparency, thermal toughness) simultaneously a result subtle manipulation conjugation structures. Specifically, optimized polyimide film shows decent ( $${T}_{550{\rm{nm}}}$$ T 550 nm ~ 88%, yellowness index ~3.26), stability $${T}_{5 \% }$$ 5 % 503 °C in N 2 atmosphere, $${T}_{{\rm{g}}}$$ g 312 °C). Moreover, after high-intensity irradiation, not only maintains over 90% but also retains 88%) 506 The design strategy paves way enhancing durability PIs energy conversion electronic resisting conditions.

Language: Английский

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The cooperatively crosslinking between GO-COOH/TiO2 @PAO microcapsules and polyimide to improve the mechanical and tribological properties of PEEK/PI composites

Tribology International, Journal Year: 2023, Volume and Issue: 191, P. 109209 - 109209

Published: Dec. 19, 2023

Language: Английский

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Lignin enhanced shape memory polyimide with superior mechanical property and performance

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 507, P. 160374 - 160374

Published: Feb. 7, 2025

Language: Английский

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Enhancing polyimide hybrid functionality through optimized alkaline hydrolysis modification

Journal of Polymer Research, Journal Year: 2025, Volume and Issue: 32(4)

Published: April 1, 2025

Language: Английский

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