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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Synchronous Regulation of Donor and Acceptor Microstructure using Thiophene‐Derived Non‐Halogenated Solvent Additives for Efficient and Stable Organic Solar Cells

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

Published: March 29, 2024

Abstract Solvent additives are pivotal for enhancing the morphology, efficiency, and stability of organic solar cells (OSCs). However, widely used additive, 1,8‐diiodooctane (DIO), has drawbacks like harmful halogen content potential OSC degradation. To address these issues, novel non‐halogenated, thienyl‐alkyl‐thienyl structural solvent additives—DTP, DTH, DTN—featuring varying alkyl linker lengths (CH 2 ) 3 , 6 9 respectively introduced. Additives with longer linkers, DTH DTN, effectively dissolve strongly interact both donor polymer PM6 acceptor L8‐BO. This dual interaction enables precise tuning their microstructures, resulting in enhanced crystallinity. Upon incorporating as an additive OSCs (PM6:L8‐BO), a minimal voltage loss is observed, leading to impressive efficiency 18.51%, surpassing 17.90% achieved DIO. Furthermore, DTH‐based devices demonstrated superior photostability. In ternary blend system (PM6:D18‐Cl:L8‐BO), 19.07% attained, outperforming previous non‐halogenated additive‐based OSCs. employing processing combination toluene carbon disulfide, high PCE 18.82% achieved. These results underscore efficacy designing aromatic units, enabling tailored interactions acceptor, thereby presenting robust strategy optimizing performance stability.

Language: Английский

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Calix[6]arene-functionalized titanium-oxo clusters for photocatalytic cycloaddition of carbon dioxide to epoxides

Inorganic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(13), P. 3755 - 3764

Published: Jan. 1, 2024

We synthesized the largest calixarene-stabilized titanium-oxo clusters reported to date, Ti28-TBC6A. It exhibits excellent photoelectronic performance and superior photocatalytic activity for CO 2 fixation.

Language: Английский

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Non-fused polymerized small-molecular acceptors containing thieno[3,4-c]pyrrole-4,6-dione core for all-polymer solar cells

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 459, P. 141659 - 141659

Published: Feb. 2, 2023

Language: Английский

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Effects of alkyl chains of benzothiadiazole-based conjugated polymers on the photovoltaic performance of non-fullerene organic solar cells

Polymer Chemistry, Journal Year: 2023, Volume and Issue: 14(5), P. 616 - 622

Published: Jan. 1, 2023

Donor polymers based on benzothiadiazole have shown a higher power conversion efficiency of 15.5% in organic solar cells.

Language: Английский

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Ligand and band engineering-induced covalent organic framework-embedded Ti32 Oxo-cluster gels-based Z-scheme heterojunction for boosting the photocatalytic degradation performance of tetracycline

Applied Surface Science, Journal Year: 2024, Volume and Issue: 660, P. 159968 - 159968

Published: March 24, 2024

Language: Английский

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Ferrocene‐Terminated Perylene Diimide‐Based Small Molecular Electrolyte as Electron‐Transport Layer for Efficient Organic Solar Cells

Solar RRL, Journal Year: 2023, Volume and Issue: 8(1)

Published: Nov. 9, 2023

The electron‐transport layer (ETL) is essential for achieving high performance and stability of organic solar cells (OSCs). However, most ETLs suffer from low conductivity, electron mobility, difficult modification, resulting in mitigation charge collection transport. Metal–organic complex, such as ferrocene, a promising candidate to improve ETL due their excellent film‐forming property, easy preparation, electrical properties. Herein, small molecule, PDIN‐Fc, based on PDIN modified by ferrocene designed, which can be synthesized environmentally friendly esterification quaternization reactions. PDIN‐Fc displays outstanding alcohol solubility tunable work function. Interestingly, introducing the group lead increased self‐doping PDIN‐Fc. As result, shows significantly improved transport conductivity compared PDIN. When using PM6:L8‐BO photoactive layer, OSCs with achieve remarkable power conversion efficiency 18.45% exhibit notable light stability. This study demonstrates an effective strategy design efficient incorporating metal complexes, enable thickness insensitivity, good stability, high‐performance photovoltaic devices.

Language: Английский

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Molecularly tailorable metal oxide clusters ensured robust interfacial connection in inverted perovskite solar cells

Science Advances, Journal Year: 2024, Volume and Issue: 10(50)

Published: Dec. 11, 2024

Interfacial recombination and ion migration between perovskite electron-transporting materials have been the persisting challenges in further improving efficiency stability of solar cells (PVSCs). Here, we design a series molecularly tailorable clusters as an interlayer that can simultaneously enhance interaction with C 60 perovskite. These precisely controlled structures, decent charge carrier mobility, considerable solubility, suitable energy levels, functional ligands, which help passivate surface defects, form uniform capping net to immobilize , build robust coupling . The target inverted PVSCs achieve impressive power conversion (PCE) 25.6% without need for additional passivation. Crucially, unencapsulated device displays excellent under light, heat, bias, maintaining 98% its initial PCE after 1500 hours maximum point tracking. results show great promise development advanced interfacial highly efficient photovoltaics.

Language: Английский

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A Thiol‐Michael Approach Towards Versatile Functionalized Cyclic Titanium‐Oxo Clusters

Chemistry - A European Journal, Journal Year: 2023, Volume and Issue: 29(63)

Published: Aug. 16, 2023

In expanding our research activities of superlattice engineering, designing new giant molecules is the necessary first step. One attempt to use inorganic transition metal clusters as building blocks. Efficient functionalization chemically precise clusters, however, remains a great challenge material scientists. Herein, we report an efficient thiol-Michael addition approach for modifications cyclic titanium-oxo cluster (CTOC). Several advantages, including high efficiency, mild reaction condition, capability complete addition, atom economy, well functional group tolerance were demonstrated. This can afford yields fully functionalized CTOCs, which provides powerful platform achieving versatile and further applications.

Language: Английский

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