Solid Additive Engineering for Next‐generation Organic Photovoltaics

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

Published: Oct. 22, 2024

Abstract Solution‐processed bulk heterojunction (BHJ) organic solar cells (OSCs) have emerged as a promising next‐generation photovoltaic technology. In this emerging field, there is growing trend of employing solid additives (SAs) to fine‐tune the BHJ morphology and unlock full potential OSCs. SA engineering offers several significant benefits for commercialization, including ability i) control film‐forming kinetics expedite high‐throughput fabrication, ii) leverage weak noncovalent interactions between materials enhance efficiency stability OSCs, iii) simplify procedures facilitate cost‐effective production scaling‐up. These features make key catalyst accelerating development Recent breakthroughs shown that can achieve an 19.67% in single‐junction demonstrating its effectiveness promoting commercialization devices. This review provides comprehensive overview pivotal contributions SAs, focusing on their roles governing dynamics, stabilizing phase separation, addressing other crucial aspects. The rationale design rules SAs highly efficient stable OSCs are also discussed. Finally, remaining challenges summarized, perspectives future advances offered.

Language: Английский

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Organic photovoltaics surpass the 20% efficiency milestone

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

Published: Jan. 17, 2025

Language: Английский

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Triplet State Suppression for Energy Loss Reduction in 20% Nonhalogenated Solvent Processed Binary Organic Solar Cells

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

Published: March 16, 2025

Abstract Boosting power conversion efficiency (PCE) of organic solar cells (OSCs) has been restricted by its undesirably high energy loss, especially for those nonhalogenated solvent‐processed ones. Here,a dichloro‐methoxylated terminal group in an asymmetric small molecular acceptor design, which realizes a significantly reduced non‐radiative loss (0.179 eV) compared to symmetric counterpart (0.202 eV), is reported. Consequently, the device improved up 20% PM6:BTP‐eC9‐4ClO, without sacrificing photon harvest or charge transport ability control system PM6:BTP‐eC9. Further characterizations reveal BTP‐eC9‐4ClO's blend film demonstrates suppressed triplet state formation, enabled enhanced electron delocalization. In addition, BTP‐eC9‐4ClO found be thermally stabler than BTP‐eC9, and thus providing stability, whose T80 value reaches > 7800 h under 80 °C anneal N 2 via linear extrapolation. This work represents state‐of‐the‐art performance binary OSCs with certified results (19.45%).

Language: Английский

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Organic Solar Cells: Principles, materials and working mechanism

Current Opinion in Colloid & Interface Science, Journal Year: 2024, Volume and Issue: unknown, P. 101893 - 101893

Published: Dec. 1, 2024

Language: Английский

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