Molecular interaction induced dual fibrils towards organic solar cells with certified efficiency over 20%

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

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Bioinspired superwetting oil–water separation strategy: toward the era of openness

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(20), P. 10012 - 10043

Published: Jan. 1, 2024

Bioinspired superwetting oil–water separation strategy is summarized from confined-space to open-space, static dynamic devices. Strategies are evaluated and compared current challenges feasible solutions emphasized.

Language: Английский

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Recent Advances in Next‐Generation Textiles

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

Published: Jan. 5, 2025

Textiles have played a pivotal role in human development, evolving from basic fibers into sophisticated, multifunctional materials. Advances material science, nanotechnology, and electronics propelled next-generation textiles beyond traditional functionalities, unlocking innovative possibilities for diverse applications. Thermal management incorporate ultralight, ultrathin insulating layers adaptive cooling technologies, optimizing temperature regulation dynamic extreme environments. Moisture utilize advanced structures unidirectional transport breathable membranes, ensuring exceptional comfort activewear outdoor gear. Protective exhibit enhanced features, including antimicrobial, antiviral, anti-toxic gas, heat-resistant, radiation-shielding capabilities, providing high-performance solutions healthcare, defense, hazardous industries. Interactive integrate sensors monitoring physical, chemical, electrophysiological parameters, enabling real-time data collection responses to various environmental user-generated stimuli. Energy leverage triboelectric, piezoelectric, hygroelectric effects improve energy harvesting storage wearable devices. Luminous display textiles, electroluminescent fiber optic systems, enable visual applications fashion communication. These advancements position at the forefront of materials significantly expanding their potential across wide range

Language: Английский

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20.6% Efficiency Organic Solar Cells Enabled by Incorporating a Lower Bandgap Guest Nonfullerene Acceptor Without Open‐Circuit Voltage Loss

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

Published: Feb. 28, 2025

Abstract Simultaneously mitigating both photovoltage and photocurrent losses is crucial for organic solar cells (OSCs) to approach the Shockley–Queisser limit of ideal efficiency. Incorporating a narrower bandgap nonfullerene acceptor (NFA) as guest component into host donor:NFA system broadens absorption spectrum. However, this can also increase nonradiative decay rate according energy‐gap law. In work, ternary OSCs are constructed by combining narrow AQx‐2F (as NFA) with lower eC9 NFA), significantly enhancing generation without compromising photovoltage. The addition acts crystallization inducer, extending period increasing ordered packing distance. This leads suppressed trap states, elevated dielectric constant, prolonged exciton lifetime, balanced hole/electron transport, reduced recombination loss. Consequently, optimized D18:AQx‐2F:eC9 achieve champion power conversion efficiency (PCE) 20.6% high open‐circuit voltage 0.937 V, short‐circuit current density 27.2 mA cm −2 fill factor 80.8%, validated an independently certified PCE 20.0%, establishing new benchmark bulk heterojunction OSCs. work demonstrates effective method simultaneously mitigate losses, paving way high‐performance

Language: Английский

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Oligomeric Carbazole Phosphonic Acid as Hole‐Transporting Layer for Organic Solar Cells With Efficiency of 19.63%

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

Published: Jan. 24, 2025

Abstract A class of self‐assembly monolayers, distinguished by a carbazole‐conjugated backbone pendant with phosphonic acid (PA) side units, are widely used as hole‐transporting layers (HTL) in organic solar cells (OSCs). However, challenges such pronounced aggregation tendency and low conductivity have hindered their widespread applications. This study addresses these limitations introducing novel oligomeric PA designs to overcome the drawbacks associated monolayer HTLs. The newly synthesized oligomer integrates carbazole backbones units through Suzuki polymerization, showing absorption characteristics similar small molecules, but reduced improved hole transport properties. OSCs using HTL achieve an impressive efficiency 19.63% remarkable stability. These results highlight potential HTLs promising materials for realizing efficient OSCs.

Language: Английский

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Loofah‐Inspired Ultralight and Superelastic Micro/Nanofibrous Aerogels for Highly Efficient Thermal Insulation

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

Published: July 25, 2024

Abstract Extreme cold events are becoming more frequent and intense around the world, imposing a huge burden on human health global economy. However, developing fibrous materials featuring ultralight weight, high shape retention, thermal insulation to withstand extreme conditions remains great challenge. Herein, inspired by natural porous loofah, an superelastic micro/nanofibrous aerogel (MNFA) that integrates hierarchical pores stable physical entanglements is directly synthesized via gelation electrospinning technology. By manipulating solution/water molecules interaction of charged jets, structure consisting networks microfibers developed, which endows MNFA with porosity (99.7%). Benefiting from entanglement between rigid flexible nanofibers, resulting can large tensile stress (4000 times its weight) 1000 compression cycles without being damaged. Moreover, exhibits feature (3 mg cm −3 ) performance (low conductivity 25.3 mW m −1 K ), making promising contender for highly efficient insulation. This work offer fresh perspectives design advancement advanced aerogels variety uses.

Language: Английский

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Flexible near-infrared organic photodetectors for emergent wearable applications

Wearable electronics., Journal Year: 2024, Volume and Issue: 1, P. 53 - 77

Published: May 13, 2024

With the evolution of Industry 4.0, next-generation wearable devices have come under spotlight, where organic electronics are playing an important role due to their flexible form factor, high performance, and integration capability. Designed conform soft dynamic surfaces, photodetectors (OPDs) integrated arrays stand out for application potential in non-invasive biosensing bio-imaging, with inherent advantages mitigating motion artifacts – a notable limitation traditional, rigid photodetector systems. Leveraging near-infrared (NIR) spectrum's capability deep skin penetration minimal scattering human tissues, NIR OPDs especially capable precise diagnostics enhanced signal quality. The adaptable factor further broadens applications human-environment interaction, marking shift towards more responsive intelligent technologies. This review summarizes latest challenges breakthroughs OPDs, emphasizing effective strategies toward high-performance device units We discuss remaining outlook on vast reshaping our interaction surroundings.

Language: Английский

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Ultrathin aerogel-structured micro/nanofiber metafabric via dual air-gelation synthesis for self-sustainable heating

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

Published: July 30, 2024

Incorporating passive heating structures into personal thermal management technologies could effectively mitigate the escalating energy crisis. However, current materials struggle to balance thickness and insulating capability, resulting in compromised comfort, space efficiency, limited thermoregulatory performance. Here, a dual air-gelation strategy, is developed directly synthesize ultrathin self-sustainable metafabric with 3D dual-network structure during electrospinning. Controlling interactions among polymer, solvent, water enables microphase separation of charged jets, while adjusting distribution carbon black nanoparticles within fluids form fibrous networks composed interlaced aerogel micro/nanofibers heat storage capabilities. With low 0.18 mm, integrated exhibits exceptional insulation performance (15.8 mW m−1K−1), superhydrophobicity, enhanced mechanical properties, high breathability maintaining radiative ability (long-lasting warming 8.8 °C). This strategy provides rich possibilities develop advanced for smart textiles management. Aerogels have application due their fragility poor processability. authors an aerogel-structured micro/nanofiber self-sustained by developing strategy.

Language: Английский

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Advanced cooling textile technologies for personal thermoregulation

Materials Today Physics, Journal Year: 2024, Volume and Issue: 41, P. 101334 - 101334

Published: Jan. 11, 2024

Language: Английский

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Bioinspired Wearable Thermoelectric Device Constructed with Soft‐Rigid Assembly for Personal Thermal Management

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(37)

Published: May 7, 2024

Abstract The development of high‐performance thermoelectric devices (TEDs) with personal thermoregulation is crucial for the advancement next‐generation wearable technologies. Most efforts focus on optimizing mechanical flexibility in fully encapsulated devices, but parasitic heat loss induced by layer‐packed polymer matrices high thermal impedance typically leads to degradation sensing and bidirectional conversion capabilities. Here, a bioinspired architectural strategy proposed this problem that demonstrates feasibility single‐sided assembly based soft‐rigid “skin‐spine” configuration improve utilization efficiency. With active TE units connected via serpentine electrodes, skin‐spine‐structured (SSSW‐TEDs) are successfully fabricated enabling temperature heat‐to‐electricity under mild forced convection. This contributes significant enhancements power delivery (by 300%) cost‐benefit analysis 100%) through efficient air convection dissipation. Moreover, SSSW‐TED enables regulation harnessing body heat, cooling skin, perceiving behaviors such as touching blowing. study not only provides novel insights TEDs also lays foundation widespread implementation skin thermoregulation.

Language: Английский

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