Donor–acceptor mutually diluted heterojunctions for layer-by-layer fabrication of high-performance organic solar cells

Nature Energy, Год журнала: 2024, Номер 9(2), С. 208 - 218

Опубликована: Янв. 9, 2024

Язык: Английский

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Stability of organic solar cells: toward commercial applications

Chemical Society Reviews, Год журнала: 2024, Номер 53(5), С. 2350 - 2387

Опубликована: Янв. 1, 2024

Organic solar cells (OSCs) have attracted a great deal of attention in the field clean energy due to their advantages transparency, flexibility, low cost and light weight. Introducing them market enables seamless integration into buildings windows, while also supporting wearable, portable electronics internet-of-things (IoT) devices. With development photovoltaic materials optimization fabrication technology, power conversion efficiencies (PCEs) OSCs rapidly improved now exceed 20%. However, there is significant lack focus on material stability device lifetime, causing severe hindrance commercial applications. In this review, we carefully review important strategies employed improve over past three years from perspectives design engineering. Furthermore, analyze discuss current progress terms air, light, thermal mechanical stability. Finally, propose future research directions overcome challenges achieving highly stable OSCs. We expect that will contribute solving problem OSCs, eventually paving way for applications near future.

Язык: Английский

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Perovskite–organic tandem solar cells

Nature Reviews Materials, Год журнала: 2024, Номер 9(3), С. 202 - 217

Опубликована: Янв. 31, 2024

Язык: Английский

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Non‐halogenated Solvent‐Processed Organic Solar Cells with Approaching 20 % Efficiency and Improved Photostability

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(22)

Опубликована: Март 25, 2024

The development of high-efficiency organic solar cells (OSCs) processed from non-halogenated solvents is crucially important for their scale-up industry production. However, owing to the difficulty regulating molecular aggregation, there a huge efficiency gap between and halogenated solvent OSCs. Herein, we fabricate o-xylene OSCs with approaching 20 % by incorporating trimeric guest acceptor named Tri-V into PM6:L8-BO-X host blend. incorporation effectively restricts excessive aggregation L8-BO-X, regulates packing optimizes phase-separation morphology, which leads mitigated trap density states, reduced energy loss suppressed charge recombination. Consequently, PM6:L8-BO-X:Tri-V-based device achieves an 19.82 %, representing highest solvent-processed reported date. Noticeably, addition Tri-V, ternary shows improved photostability than binary PM6:L8-BO-X-based device, maintains 80 initial after continuous illumination 1380 h. This work provides feasible approach fabricating high-efficiency, stable, eco-friendly OSCs, sheds new light on large-scale industrial production

Язык: Английский

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Hot‐Casting Strategy Empowers High‐Boiling Solvent‐Processed Organic Solar Cells with Over 18.5% Efficiency

Advanced Materials, Год журнала: 2023, Номер 36(3)

Опубликована: Авг. 9, 2023

Abstract Most top‐rank organic solar cells (OSCs) are manufactured by the halogenated solvent chloroform, which possesses a narrow processing window due to its low‐boiling point. Herein, based on two high‐boiling solvents, chlorobenzene (CB) and non‐halogenated green ortho‐xylene (OX), preparing active layers with hot solution is put forward enhance performance of OSCs. In situ test morphological characterization clarify that hot‐casting strategy assists in fast synchronous molecular assembly both donor acceptor layer, contributing preferable donor/acceptor ratio, vertical phase separation, stacking, beneficial charge generation extraction. Based PM6:BO‐4Cl, OSCs wide achieve efficiencies 18.03% CB 18.12% OX, much higher than devices processed room temperature solution. Moreover, PM6:BTP‐eC9 deliver remarkable fill factor 80.31% efficiency 18.52% representing record value among binary solvent. This work demonstrates facile manipulate distribution arrangement for boosting solvents.

Язык: Английский

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Halogenated Nonfused Ring Electron Acceptor for Organic Solar Cells with a Record Efficiency of over 17%

Advanced Materials, Год журнала: 2023, Номер 36(4)

Опубликована: Ноя. 23, 2023

Abstract Three nonfused ring electron acceptors (NFREAs), namely, 3TT‐C2‐F , 3TT‐C2‐Cl and 3TT‐C2 are purposefully designed synthesized with the concept of halogenation. The incorporation F or/and Cl atoms into molecular structure ( ) enhances π–π stacking, improves mobility, regulates nanofiber morphology blend films, thus facilitating exciton dissociation charge transport. In particular, films based on D18: demonstrate a high an extended diffusion distance, well‐formed network. These factors contribute to devices remarkable power conversion efficiency 17.19%, surpassing that (16.17%) (15.42%). To best knowledge, this represents highest achieved in NFREA‐based up now. results highlight potential halogenation NFREAs as promising approach enhance performance organic solar cells.

Язык: Английский

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Tunable Donor Aggregation Dominance in a Ternary Matrix of All‐Polymer Blends with Improved Efficiency and Stability

Advanced Materials, Год журнала: 2023, Номер 36(15)

Опубликована: Июль 7, 2023

Abstract Using two structurally similar polymer acceptors in constructing high‐efficiency ternary all‐polymer solar cells is a widely acknowledged strategy; however, the focus thus far has not been on how acceptor(s) would tune aggregation of donors, and furthermore film morphology device performance (efficiency stability). Herein, it reported that matching celebrity acceptor PY‐IT donor PBQx‐TCl results enhanced H ‐ PBQx‐TCl, which can be finely tuned by controlling amount second PY‐IV. Consequently, efficiency‐optimized PY‐IV weight ratio (0.2/1.2) leads to state‐of‐the‐art power conversion efficiency 18.81%, wherein light‐illuminated operational stability also along with well‐protected thermal stability. Such enhancements stabilities attributed optimization desired glass transition temperature target active layer based comprehensive characterization. In addition being high‐power case for cells, these are successful attempt using combined toward optimal morphology, provides theoretical basis construction other types organic photovoltaics beyond cells.

Язык: Английский

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A Pyrene‐Fused Dimerized Acceptor for Ternary Organic Solar Cells with 19% Efficiency and High Thermal Stability

Angewandte Chemie International Edition, Год журнала: 2023, Номер 63(1)

Опубликована: Ноя. 21, 2023

A pyrene-fused dimerized electron acceptor has been successfully synthesized and subsequently incorporated as the third component in ternary organic solar cells (OSCs). Diverging from traditional acceptors with a linear configuration, this novel displays distinctive "butterfly-like" structure, comprising two Y-acceptors wings fused pyrene-based backbone. The extended π-conjugated backbone electron-donating nature of pyrene enable new to show low solubility, elevated glass transition temperature (Tg ), low-lying frontier energy levels. Consequently, seamlessly integrates into OSCs, enhancing transporting properties, reducing non-radiative voltage loss, elevating open-circuit voltage. These merits have enabled OSCs an exceptional efficiency 19.07%, marked improvement compared 17.6% attained binary OSCs. More importantly, high Tg exhibited by helps stabilize morphology photoactive layer thermal-treated at 70 °C, retaining 88.7% over 600 hours. For comparison, experience decline 73.7% after same duration. results indicate that design incorporation unit is promising strategy development for

Язык: Английский

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1,5-Diiodocycloctane: a cyclane solvent additive that can extend the exciton diffusion length in thick film organic solar cells

Energy & Environmental Science, Год журнала: 2024, Номер 17(5), С. 1916 - 1930

Опубликована: Янв. 1, 2024

The addition of cyclane 1,5-diiodocycloctane (DICO) provides critical roles in extending exciton diffusion length within active layer, consequently contributing to the improvement power conversion. efficiency thick film organic solar cells.

Язык: Английский

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Solid Additive Delicately Controls Morphology Formation and Enables High‐Performance in Organic Solar Cells

Advanced Functional Materials, Год журнала: 2023, Номер 33(49)

Опубликована: Июнь 26, 2023

Abstract Volatile solid additives are an effective strategy for optimizing morphology and improving the power conversion efficiencies (PCEs) of organic solar cells (OSCs). Much research has been conducted to understand role in active layer morphology. However, it is crucial delve deeper how affect entire evolution process, from solution state film thermal annealing stage, which remains unclear. Herein, use a highly crystalline additive, phenoxathiin (Ph), D18‐Cl:N3‐based OSCs study its impact on formation photovoltaic performance presented. Owing good miscibility with acceptor N3, Ph additive can not only extend time form state, but also provide sufficient aggregation. After annealing, volatilizes better aligned N3 molecules formed favorable hybrid Consequently, D18‐Cl:N3–based OSC exhibited outstanding PCE 18.47%, enhanced short‐circuit current 27.50 mA cm −2 fill factor 77.82%. This spurring development high‐performance using that allow fine control during development.

Язык: Английский

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