Reducing the Depletion Region Width at the Anode Interface via a Highly Doped Conjugated Polyelectrolyte Composite for Efficient Organic Solar Cells

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(3), С. 3744 - 3754

Опубликована: Янв. 15, 2024

In the realm of organic solar cells (OSCs), width depletion region at anode interface is a critical factor that adversely impacts open-circuit voltage (Voc) and power conversion efficiency (PCE). To address this challenge, novel approach involving conjugated polyelectrolyte (CPE)-based composite, PCP-2F–Li:POM, has been developed. This composite serves as solution-processed hole transport layer (HTL), effectively minimizing in high-performance OSCs. The innovative aspect PCP-2F–Li:POM lies its "mutual doping" mechanism. Polyoxometalate (POM) utilized dopant, facilitating formation p-doped CPE n-doped POM within composite. results substantial increase doping density, nearly 2 orders magnitude higher than observed unmodified CPE. Consequently, markedly reduced, shrinking from 76.4 to 6.0 nm. reduction plays pivotal role enhancing via tunneling effect. practical impact development notable. It leads an Voc 0.84 0.86 V, thereby contributing significantly impressive PCE 18.04% Moreover, compatibility with large-area processing techniques underscores potential viable HTL material for future applications. Additionally, contribution enhanced long-term stability OSCs further bolsters suitability

Язык: Английский

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Dynamics Parameter Correction for Predicting the Long-Term Stability of Organic Photovoltaics

Macromolecules, Год журнала: 2024, Номер 57(14), С. 6548 - 6558

Опубликована: Июль 15, 2024

Язык: Английский

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Monophenyl-featured side-chain-random terpolymers for organic solar cells with an efficiency beyond 19%

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(31), С. 20459 - 20468

Опубликована: Янв. 1, 2024

A new asymmetric benzodithiophene-dione unit is designed to construct a series of skeleton-fixed side-chain-random terpolymers. The terpolymer PhEH10-based ternary device achieves champion efficiency more than 19% with fill factor over 80%.

Язык: Английский

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Siloxane as Humidity‐Resistant and Stabilizing Additive for Ambient‐Processed Organic Solar Cells

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 8, 2024

Abstract High‐performing organic solar cells (OSCs) being processed in ambient conditions and possessing long‐term stability are desired toward commercialization. Here, resultantly bifunctional additive is proposed for active layer, which can greatly enhance humidity endurance during the air‐processing of layer device meantime. Intriguingly, with 1% octamethyltrisiloxane (3Si) as additive, casting PM6:L8‐BO even 90% relative (RH) air could show comparable efficiency to that N 2 condition. Furthermore, 3Si‐processed layers also display remarkably enhanced thermal light stabilities conventional OSCs. After aging at 85 °C 1000 h simulated UV band 100 mW cm −2 55°C h, binary OSCs maintain 91.6% 86.1% initial efficiency, leading final averaged efficiencies 16.17% 15.42%, respectively. The results represent most stable based on strategy. universality siloxane a humidity‐resistant stabilizing agent confirmed other systems, paving way broader application additive.

Язык: Английский

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Diverse siloxane-terminated side chain ameliorated simple polymer donors towards efficient and stable air-processed organic solar cells

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 158404 - 158404

Опубликована: Дек. 1, 2024

Язык: Английский

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