Halogenation Strategy of Thiophene Derived Solvent Additives Enables Optimized Morphology for Organic Solar Cells with 19.17% Efficiency DOI

Wenyan Su,

Xuming Zhou,

Ze‐Fan Yao

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер 34(19)

Опубликована: Янв. 14, 2024

Abstract As simple and versatile tools, additives have been widely used to refine active layer morphology played a crucial role in boosting the power conversion efficiency (PCE) of organic solar cells (OSCs). Herein, three novel solvent named Th‐FSi, Th‐ClSi, Th‐BrSi with same backbone 2,5‐bis(trimethylsilyl)thiophene are designed synthesized by substituting different halogens fluorine, chlorine, bromine, respectively. Notably, Th‐ClSi exhibits more significant dipole moment engages non‐covalent interactions small‐molecule acceptor (SMA) L8‐BO, which slight adjustments intermolecular interaction, crystallinity, molecular packing PM6:L8‐BO layer. Consequently, OSCs incorporating outperform their Th‐FSi counterparts photo‐capturing, reduced energy loss, superior exciton dissociation, charge transfer properties, out‐coming yields an enhanced PCE 18.29%. Moreover, integrating near‐infrared absorbing SMA (BTP‐eC9) guest into matrix, absorption spectrum span 880–930 nm, resultant ternary achieve commendable 19.17%, ranking among highest efficiencies reported date is expanded. These findings underscore promise halogenated thiophene‐based as potent avenue for morphological fine‐tuning consequent enhancement OSCs.

Язык: Английский

Organic Solar Cells with Over 19% Efficiency Enabled by a 2D‐Conjugated Non‐Fullerene Acceptor Featuring Favorable Electronic and Aggregation Structures DOI
Kerui Liu, Yuanyuan Jiang, Feng Liu

и другие.

Advanced Materials, Год журнала: 2023, Номер 35(32)

Опубликована: Май 27, 2023

The π-expansion of non-fullerene acceptors is a promising method for boosting the organic photovoltaic performance by allowing fine-tuning electronic structures and molecular packing. In this work, highly efficient solar cells (OSCs) are fabricated using 2D strategy to design new acceptors. Compared with quinoxaline-fused cores AQx-16, π-expanded phenazine-fused AQx-18 induce more ordered compact packing between adjacent molecules, affording an optimized morphology rational phase separation in blend film. This facilitates exciton dissociation inhibited charge recombination. Consequently, power conversion efficiency (PCE) 18.2% simultaneously increasing Voc , Jsc fill factor achieved AQx-18-based binary OSCs. Significantly, ternary devices via two-in-one alloy acceptor exhibit superior PCE 19.1%, one highest values ever reported OSCs, along high 0.928 V. These results indicate importance delicate regulation crystalline behaviors achieve performance, aimed at significantly promoting further development

Язык: Английский

Процитировано

149
Donor–acceptor mutually diluted heterojunctions for layer-by-layer fabrication of high-performance organic solar cells DOI
Liang Wang, Chen Chen,

Yiwei Fu

и другие.

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

Опубликована: Янв. 9, 2024

Язык: Английский

Процитировано

136
In Situ Removable Additive Assisted Organic Solar Cells Achieving Efficiency over 19% and Fill Factor Exceeding 81% DOI

Lingchen Kong,

Zesheng Zhang, Ningjiu Zhao

и другие.

Advanced Energy Materials, Год журнала: 2023, Номер 13(25)

Опубликована: Май 24, 2023

Abstract Additive engineering can precisely regulate the bulk‐heterojunction active layer morphology with ideal domain size and purity, playing a critical role in development of organic solar cells (OSCs). Herein, two solid additives, 1,4‐dichlorobenzene (DCB) 1‐chloro‐4‐iodobenzene (CIB), low melting point (mp.) ≈52 °C, are investigated comprehensively comparison to 1,4‐diiodobenzene (DIB, mp. 131 °C). After spin‐coating, DIB residue is found as‐cast PM6:BTP‐eC9 based blend film, whereas DCB CIB completely removed during showing situ removable properties that enable convenient processing. In OSCs, DCB‐ CIB‐processed layers afford power‐conversion efficiencies (PCEs) 18.2% 18.4%, respectively, all higher than 17.8% for DIB. Among three most effective enhancements absorption coefficients donor acceptor, affording fast more balanced carrier transports, suppressing recombination. Of particular note, provide some universality as an additive, on its elevations PCEs several binary PM6:D18‐Cl:L8‐BO ternary layers. Impressively, prominent PCE 19.1% remarkable fill factor 81.1% achieved layer. This work demonstrates potential additive high‐efficiency OSCs.

Язык: Английский

Процитировано

104
Electrostatic force promoted intermolecular stacking of polymer donors toward 19.4% efficiency binary organic solar cells DOI Creative Commons

Zirui Gan,

Liang Wang,

Jinlong Cai

и другие.

Nature Communications, Год журнала: 2023, Номер 14(1)

Опубликована: Окт. 9, 2023

Conjugated polymers are generally featured with low structural order due to their aromatic and irregular units, which limits light absorption charge mobility in organic solar cells. In this work, we report a conjugated molecule INMB-F that can act as molecular bridge via electrostatic force enhance the intermolecular stacking of BDT-based polymer donors toward efficient stable Molecular dynamics simulations synchrotron X-ray measurements reveal electronegative adsorb on electropositive main chain increase donor-donor interactions, leading enhanced shortened π-π distance consequently transport ability. Casting non-fullerene acceptor layer top modified donor fabricate cells layer-by-layer deposition evidences significant power conversion efficiency boosts range photovoltaic systems. A 19.4% (certified 18.96%) is realized PM6/L8-BO binary devices, one highest reported efficiencies material system. The by also leads six-fold enhancement operational stability

Язык: Английский

Процитировано

101
Controlling Morphology and Voltage Loss with Ternary Strategy Triggers Efficient All-Small-Molecule Organic Solar Cells DOI

Mengyun Jiang,

Hong‐Fu Zhi,

Bao Zhang

и другие.

ACS Energy Letters, Год журнала: 2023, Номер 8(2), С. 1058 - 1067

Опубликована: Янв. 23, 2023

Herein, an emerging acceptor L8-BO as the third component was combined with B1:BO-4Cl system for constructing efficient ternary all-small-molecule organic solar cells (ASM-OSCs). Theoretical, morphological, and crystallographic studies reveal that BO-4Cl possess good compatibility, resulting in alloy-like state formation of two acceptors blends. The synergistic effect is conducive to forming favorable phase separation molecular stacking promoting charge splitting extraction, which contributes simultaneously boosting short-circuit current density fill factor. Furthermore, higher lowest unoccupied orbital energy level assist ASM-OSCs achieving lower voltage loss respect binary devices. optimal 20 wt % deliver a top-level efficiency 17.10%. This work demonstrates not only morphology but also small matrix can be well-manipulated by employing strategy.

Язык: Английский

Процитировано

97
Geometry design of tethered small-molecule acceptor enables highly stable and efficient polymer solar cells DOI Creative Commons
Yang Bai, Ze Zhang, Qiuju Zhou

и другие.

Nature Communications, Год журнала: 2023, Номер 14(1)

Опубликована: Май 22, 2023

With the power conversion efficiency of binary polymer solar cells dramatically improved, thermal stability small-molecule acceptors raised main concerns on device operating stability. Here, to address this issue, thiophene-dicarboxylate spacer tethered are designed, and their molecular geometries further regulated via thiophene-core isomerism engineering, affording dimeric TDY-α with a 2, 5-substitution TDY-β 3, 4-substitution core. It shows that processes higher glass transition temperature, better crystallinity relative its individual acceptor segment isomeric counterpart TDY-β, more stable morphology donor. As result, based delivers 18.1%, most important, achieves an extrapolated lifetime about 35000 hours retaining 80% initial efficiency. Our result suggests proper geometry design, can achieve both high

Язык: Английский

Процитировано

97
Non-covalent interactions (NCIs) in π-conjugated functional materials: advances and perspectives DOI Creative Commons
Ashanul Haque, Khalaf M. Alenezi, Muhammad S. Khan

и другие.

Chemical Society Reviews, Год журнала: 2023, Номер 52(2), С. 454 - 472

Опубликована: Янв. 1, 2023

We describe the role of non-covalent intermolecular interactions in design π-conjugated functional materials. highlight opto-electronic applications these materials related to their structural and photophysical properties.

Язык: Английский

Процитировано

92
Restrained energetic disorder for high-efficiency organic solar cells via a solid additive DOI

Zhihao Chen,

Huifeng Yao, Jingwen Wang

и другие.

Energy & Environmental Science, Год журнала: 2023, Номер 16(6), С. 2637 - 2645

Опубликована: Янв. 1, 2023

A new morphology regulation approach using solid additive, 1,3,5-trimethoxybenzene, can restrict energetic disorder and optimize the nanoscale of organic solar cells, achieves a high power conversion efficiency 19.30%.

Язык: Английский

Процитировано

92
Improved Molecular Ordering in a Ternary Blend Enables All‐Polymer Solar Cells over 18% Efficiency DOI Open Access

Yunhao Cai,

Cong Xie, Qian Li

и другие.

Advanced Materials, Год журнала: 2022, Номер 35(8)

Опубликована: Дек. 3, 2022

Although all-polymer solar cells (all-PSCs) show great commercialization prospects, their power conversion efficiencies (PCEs) still fall behind small molecule acceptor-based counterparts. In blends, the optimized morphology and high molecular ordering are difficult to achieve since there is troublesome competition between crystallinity of polymer donor acceptor during film-formation process. Therefore, it challenging improve performance all-PSCs. Herein, a ternary strategy adopted modulate an blend, in which PM6:PY-82 selected as host blend PY-DT employed guest component. Benefiting from favorable miscibility two acceptors higher regularity PY-DT, matrix features well-defined fibrillar improved ordering. Consequently, champion PM6:PY-82:PY-DT device produces record-high PCE 18.03%, with simultaneously open-circuit voltage, short-circuit current fill factor comparison binary devices. High-performance large-area (1 cm2 ) thick-film (300 nm) all-PSCs also successfully fabricated PCEs 16.35% 15.70%, respectively.Moreover, 16.5 organic module affords encouraging 13.84% when using non-halogenated solvent , showing potential "Lab-to-Fab" transition

Язык: Английский

Процитировано

80
Recent Developments of Polymer Solar Cells with Photovoltaic Performance over 17% DOI
Jianghao Jin,

Qiao Wang,

Kaige Ma

и другие.

Advanced Functional Materials, Год журнала: 2023, Номер 33(14)

Опубликована: Янв. 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.

Язык: Английский

Процитировано

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