Recent Advances in Single‐Junction Organic Solar Cells

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(37)

Published: July 20, 2022

Single-junction organic solar cells (OSCs) have made significant progress in recent years. Innovations material design and device optimization improved the power conversion efficiencies to over 19 %. In this Minireview, based on advances, we discuss molecular strategies tune absorption spectrum, energy level, intermolecular aggregation as well highlight role of electrostatic potential decreasing loss. Then, introduce latest four types OSCs composed different donor:acceptor combinations: polymer donor:small-molecule acceptor, all-polymer, all-small-molecule, small-molecule donor:polymer acceptor. Finally, challenges practical applications, including cost, stability, multi-function integration, are discussed.

Language: Английский

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Intrinsically Stretchable, Highly Efficient Organic Solar Cells Enabled by Polymer Donors Featuring Hydrogen‐Bonding Spacers

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(50)

Published: Sept. 25, 2022

Intrinsically stretchable organic solar cells (IS-OSCs), consisting of all layers, are attracting significant attention as a future power source for wearable electronics. However, most the efficient active layers OSCs mechanically brittle due to their rigid molecular structures designed high electrical and optical properties. Here, series new polymer donors (PD s, PhAmX) featuring phenyl amide (N1 ,N3 -bis((5-bromothiophen-2-yl)methyl)isophthalamide, PhAm)-based flexible spacer (FS) inducing hydrogen-bonding (H-bonding) interactions is developed. These PD s enable IS-OSCs with conversion efficiency (PCE) 12.73% excellent stretchability (PCE retention >80% initial value at 32% strain), representing best performances among reported date. The incorporation PhAm-based FS enhances ordering well Y7 acceptor, enhancing mechanical properties simultaneously. It also found that in OSCs, PhAm5:Y7 blend achieves much higher PCE 17.5% compared reference PM6:Y7 blend. impact PhAm-FS linker on photovoltaic thoroughly investigated.

Language: Английский

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Harnessing the Structure‐Performance Relationships in Designing Non‐Fused Ring Acceptors for Organic Solar Cells

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(21)

Published: Feb. 17, 2023

Abstract The prerequisite for commercially viable organic solar cells (OSC) is to reduce the efficiency‐stability‐cost gap. Therefore, cost of materials should be reduced by minimizing synthetic steps, yet maintaining molecular planarity and efficiencies achieved fused ring acceptors (FRA). In this respect, developing non‐fused (NFRA) with suitable functionalization favor conformational effective packing beneficial cost‐effective. Presently, power conversion efficiency (PCE) NFRAs around 16 %, lower than 19 % FRAs. Despite their potential, a thorough understanding structural design necessary efficient OSCs. This article pays special attention concept developed in last years analyzed approach toward improvement, an important step technological application.

Language: Английский

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Recent Developments of Polymer Solar Cells with Photovoltaic Performance over 17%

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(14)

Published: Jan. 22, 2023

Abstract With the emergence of ADA'DA‐type (Y‐series) non‐fullerene acceptors (NFAs), power conversion efficiencies (PCEs) organic photovoltaic devices have been constantly refreshed and gradually reached 20% in recent years (19% for single junction tandem device). The possess specific design concept, which greatly enrich NFA types excellent compatibility with many donor materials. It is gratifying to note that previously underperforming materials combine these regulated shine again. Nowadays, concept modular widely used research donors, injecting new vitality into field photovoltaics. Furthermore, also promote multicomponent devices, bilayer processing solvent engineering, additive engineering. Herein, latest progresses polymer solar cells efficiency over 17% are briefly reviewed from aspects active material design, interface development, device technology. At last, opportunities challenges commercialization future discussed.

Language: Английский

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Poly(dimethylsiloxane)‐block‐PM6 Polymer Donors for High‐Performance and Mechanically Robust Polymer Solar Cells

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(24)

Published: March 17, 2023

High power conversion efficiency (PCE) and stretchability are the dual requirements for wearable application of polymer solar cells (PSCs). However, most efficient photoactive films mechanically brittle. In this work, highly (PCE = 18%) robust (crack-onset strain (COS) PSCs acheived by designing block copolymer (BCP) donors, PM6-b-PDMSx (x 5k, 12k, 19k). these BCP stretchable poly(dimethylsiloxane) (PDMS) blocks covalently linked with PM6 to effectively increase stretchability. The donors increases a longer PDMS block, PM6-b-PDMS19k :L8-BO PSC exhibits high PCE (18%) 9-times higher COS value compared that (COS 2%) PM6:L8-BO-based PSC. PM6:L8-BO:PDMS12k ternary blend shows inferior (5%) (1%) due macrophase separation between active components. intrinsically PSC, significantly greater mechanical stability PCE80% ((80% initial PCE) at 36% strain) than those PM6:L8-BO (PCE80% 12% PM6:L8-BO:PDMS 4% strain). This study suggests an effective design strategy PD achieve PSCs.

Language: Английский

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Rigid- and soft-block-copolymerized conjugated polymers enable high-performance intrinsically stretchable organic solar cells

Joule, Journal Year: 2023, Volume and Issue: 8(1), P. 204 - 223

Published: Dec. 1, 2023

Language: Английский

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Design of Star‐Shaped Trimer Acceptors for High‐Performance (Efficiency > 19%), Photostable, and Mechanically Robust Organic Solar Cells

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(8)

Published: Jan. 2, 2024

Abstract High power conversion efficiency (PCE), long‐term stability, and mechanical robustness are prerequisites for the commercial applications of organic solar cells (OSCs). In this study, a new star‐shaped trimer acceptor (TYT‐S) is developed high‐performance OSCs with PCE 19.0%, high photo‐stability ( t 80% lifetime = 2600 h under 1‐sun illumination), crack‐onset strain (COS) 21.6% achieved. The isotropic molecular structure TYT‐S affords efficient multi‐directional charge transport electron mobility. Furthermore, its amorphous prevents formation brittle crystal‐to‐crystal interfaces, significantly enhancing properties OSC. As result, TYT‐S‐based demonstrate higher (19.0%) stretchability (COS 21.6%) than linear‐shaped (TYT‐L)‐based (PCE 17.5% COS 6.4%) small‐molecule (MYT)‐based 16.5% 1.3%). addition, increased size TYT‐S, relative to that MYT dimer (DYT), suppresses diffusion kinetics molecules, substantially improving photostability OSCs. Finally, effectively potential intrinsically stretchable (IS)‐OSCs constructed. IS‐OSCs exhibit device (strain at 31%) 14.4%.

Language: Английский

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Recent progress and prospects of dimer and multimer acceptors for efficient and stable polymer solar cells

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(9), P. 4674 - 4706

Published: Jan. 1, 2024

This review summarizes the recent progress, key design principles and prospects of dimer multimer acceptors for developing polymer solar cells (PSCs) with high efficiency long-term stability.

Language: Английский

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Polymer Donor with a Simple Skeleton and Minor Siloxane Decoration Enables 19% Efficiency of Organic Solar Cells

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(16)

Published: Jan. 18, 2024

Abstract Development of polymer donors with simple chemical structure and low cost is great importance for commercial application organic solar cells (OSCs). Here, side‐chain random copolymer PMQ‐Si605 a simply 6,7‐difluoro‐3‐methylquinoxaline‐thiophene backbone 5% siloxane decoration side chain synthesized in comparison its alternating PTQ11. Relative to molecular weight ( M n ) 28.3 kg mol −1 PTQ11, the minor beneficial achieving higher up 51.1 . In addition, can show stronger aggregation ability faster charge mobility as well more efficient exciton dissociation active layer revealed by femtosecond transient absorption spectroscopy. With L8‐BO‐F acceptor, based OSCs display power conversion efficiency (PCE) 18.08%, much than 16.21% PTQ11 devices. another acceptor BTP‐H2 optimize photovoltaic performance PMQ‐Si605, further elevated PCEs 18.50% 19.15% be achieved binary ternary OSCs, respectively. Furthermore, layers are suitable processing high humidity air, an important factor massive production OSCs. Therefore, on promising, affording high‐performing candidate.

Language: Английский

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A high-efficiency and stable organic solar cell with balanced crystallization kinetics

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(6), P. 2182 - 2192

Published: Jan. 1, 2024

In this work, we present a conceptual strategy based on multi-acceptor components to realize balanced crystallization kinetics in organic solar cells (OSC) that deliver 19.35% power conversion efficiency with superior photostability.

Language: Английский

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