Mitigating the Energy Loss in Ternary Organic Photovoltaics with a Conjugated Terpolymer

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

Published: Feb. 5, 2025

We investigated the performance of a terpolymer, PM1, as third component in two donor–one acceptor-based ternary organic photovoltaics (OPVs). derivative PM6, incorporates 20% thiophene-thiazolothiazole (TTz) monomers, expanding its structural diversity and featuring lower highest occupied molecular orbital (HOMO) energy level compared to that PM6. To investigate impact we fabricated p–i–n-structured OPVs with following layer configuration: ITO/PEDOT:PSS/PM6:Y6 (or BTP-eC9) or without PM1/PFN-Br/Ag. By examining miscibility blend film morphology, explored how these factors influence carrier dynamics ultimately OPV performance. The high compatibility between PM1 PM6 (χPM6-PM1 = 0.003) facilitated formation well-mixed donor phase, akin an alloy. This homogeneous promoted efficient charge transport suppressed trap-assisted recombination within film. Consequently, PM1-based exhibited reduced nonradiative recombination, leading increased open-circuit voltage (VOC) overall device efficiency. optimal power conversion efficiencies using Y6 BTP-eC9 acceptors reached 17.09 17.60%, respectively. Our findings highlight potential terpolymers promising materials for OPVs, paving way innovative polymer design strategies.

Language: Английский

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Transforming Reactive Crystallization from Batch to Continuous: A Case Study of 1-Phenyl-3-methyl-5-pyrazolone Synthesis

ACS Sustainable Chemistry & Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: April 2, 2025

Language: Английский

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Advancements in morphology controllable ternary organic solar cells for active layers

Renewable and Sustainable Energy Reviews, Journal Year: 2025, Volume and Issue: 216, P. 115673 - 115673

Published: April 8, 2025

Language: Английский

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Tailoring selenium alkyl chain-containing small molecule donor enables efficient ternary solar cells with reduced charge recombination

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 513, P. 163009 - 163009

Published: April 23, 2025

Language: Английский

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The Effects of Polymer Molecular Weight on Morphology and the Device Efficiency: Progress and Prospects for Organic Solar Cells

Macromolecular Chemistry and Physics, Journal Year: 2025, Volume and Issue: unknown

Published: April 28, 2025

Abstract Organic solar cells (OSCs) are developing as a crucial technology for sustainable energy, attaining power conversion efficiencies (PCEs) of over 20%. The morphology the active layer is essential in influencing PCE, but its exact manipulation difficult because complex interactions between donor and acceptor molecules. molecular weight ( M w ) polymers parameter that significantly affects morphological development, including domain size, purity, crystallinity, orientation. Here trade‐offs regulation examined, emphasizing high‐ improve stability crystallinity may hinder phase separation. In contrast, low‐ promote finer separation at cost mechanical integrity. Moreover, current achievements synthesized to clarify methodologies optimizing achieve balanced features, enhance design, maximize potential OSCs. These insights facilitate resolution existing difficulties advancements OSCs toward useful applications.

Language: Английский

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19.5% Efficiency organic solar cells enabled by a direct C–H arylation-derived wide-bandgap small-molecule guest donor

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(20), P. 7803 - 7815

Published: Jan. 1, 2024

A tin-free asymmetric small-molecule guest donor ( o PhFO) with a wide bandgap allows PM6: PhFO:BTP-ec9 ternary OSCs to reach champion efficiency of 19.5% by optimizing blend morphology and vertical phase separation as well reducing energy loss.

Language: Английский

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