Recent Progress of Solution‐Processed Thickness‐Insensitive Cathode Interlayers for High‐Performance Organic Solar Cells

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

Published: Jan. 5, 2025

Abstract Organic solar cells (OSCs) have shown great applications potential in flexible/wearable electronics, indoor photovoltaics and so on. The efficiencies of single‐junction OSCs exceeded 19%, making the commercialization brighter. Large‐area printing fabrication is a key way to OSCs, solution‐processed thickness‐insensitive cathode interlayers (CILs) are urgently needed for large‐area fabrication. High electron mobility interfacial materials (CIMs) critical enable CILs. N‐type self‐doped characteristics can endow organic CIMs with high mobility. Different type n‐type show different applicability conventional inverted OSCs. External dopants further increase hybrid blends. Particularly, ZnO doped dyes achieve superior photoconductivity This review focuses on CILs high‐performance In small molecules polymers, external n‐doped blends as summarized. small‐molecular electrolytes polyelectrolytes, PEI‐/PEIE‐based (including organic‐organic ZnO‐organic) summarized relationships between particular functions chemical structures highlighted. Finally, summary outlook provided.

Language: Английский

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Synergistically Modulating the Bay and Amid Sites of a Perylene Diimide Cathode Interface Layer for High-Efficiency and High-Stability Organic Solar Cells

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(30), P. 11385 - 11395

Published: July 12, 2024

Simultaneously enhancing the power conversion efficiency (PCE) and stability of organic solar cells (OSCs) is a pivotal issue to advance their commercial feasibility. The frequently used cathode interface layer (CIL) based on perylene diimide (PDI) derivatives usually causes some problems, such as unmatched surface energies (γs) with an active layer, strong aggregation, poor stability. Herein, bay amide position synergistically benzoyl hydrazide-functionalized PDI-based CILs, namely PDI-4NOPN PDINN-NOPN, have been designed synthesized. Compared PCE 14.85%, PDINN-NOPN-applied OSCs display higher 17.37% (PM6: BTP-eC9) more excellent device stabilities under diverse conditions. Furthermore, PDINN-NOPN demonstrates impressive level insensitivity thickness, maintaining over 92% even when thickness up 19 nm, which attributed powerful self-doping effect, superior work function (Wf) modulating capability, morphology proper crystallinity, low impedance PDINN-NOPN. inferior performance observed in ascribed decrease electron cloud distribution resulting from excess carbonyl groups. Carbonyl groups intensify electron-withdrawing characteristic groups, consequently impeding charge transfer process. Thus, collaboratively optimizing amid sites PDI represents practical approach for achieving high-efficiency, high-stability, thickness-insensitive OSCs.

Language: Английский

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A small molecule based on dithieno[3,2-f:2’,3’-h]phthalimide enabling 19.22% efficiency by depressing non-radiative energy loss in ternary organic solar cells

Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

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Optimizing interface properties of perylene-diimide-based cathode interlayer material by reducing 2-hydroxyethyl groups to achieve organic solar cells with efficiency over 19%

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110799 - 110799

Published: Feb. 1, 2025

Language: Английский

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Subtly Modulating Bay Sites of Perylene Diimide Cathode Interface Layer for High‐Performance and High‐Stability Non‐Fullerene Organic Solar Cells

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

Published: Dec. 26, 2024

Abstract Cathode interface layers (CILs) are crucial for optimizing the power conversion efficiency (PCE) and stability of organic solar cells (OSCs). Two small molecule CILs, PDINN‐TS PDINN‐BS developed, by modifying bay sites perylene diimide (PDI) with thieno [3,2‐b] thiophene 2,2′‐bithiophene, separately. Due to better electron‐donating capacity longer conjugate length exhibits a stronger self‐doping effect superior compatibility compared PDINN‐TS. Consequently, in PM6: Y6 OSCs, achieved an elevated PCE 16.95%, surpassing 16.66%. Meanwhile, excellent universality. When employing BTP‐eC9 PM6:L8‐BO systems, PDINN‐BS‐based device yielded 18.02% 18.95%, outperforming 17.51% 18.38%, respectively. Furthermore, tests revealed that after being stored glovebox 1500 h, retained 90% its pristine PCE, 86% showed 80% decay (T 80 ) 150 h air, 200 at 70 °C heating N 2 , 500 under 1 sun immersion, 120, 130, 380 This demonstrates displayed complicated environment. this study provides significative guidance exploitation high‐performance high‐stability OSCs.

Language: Английский

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Optimizing Interface Properties of Perylene-Diimide-Based Cathode Interlayer Material by Reducing 2-Hydroxyethyl Groups to Achieve Organic Solar Cells with Efficiency Over 19%

Published: Jan. 1, 2024

Language: Английский

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Optimizing Interface Properties of Perylene-Diimide-Based Cathode Interlayer Material by Reducing 2-Hydroxyethyl Groups to Achieve Organic Solar Cells with Efficiency Over 19%

Published: Jan. 1, 2024

Language: Английский

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