Recent progress in organic solar cells (Part II device engineering)

Science China Chemistry, Год журнала: 2022, Номер 65(8), С. 1457 - 1497

Опубликована: Май 26, 2022

Язык: Английский

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Realizing 17.5% Efficiency Flexible Organic Solar Cells via Atomic-Level Chemical Welding of Silver Nanowire Electrodes

Journal of the American Chemical Society, Год журнала: 2022, Номер 144(19), С. 8658 - 8668

Опубликована: Апрель 26, 2022

Solution processable flexible transparent electrodes (FTEs) are urgently needed to boost the efficiency and mechanical stability of organic solar cells (OSCs) on a large scale. However, how balance optoelectronic properties meanwhile achieve robust behavior FTEs is still huge challenge. Silver nanowire (AgNW) electrodes, exhibiting easily tuned optoelectronic/mechanical properties, attracting considerable attention, but their poor contacts at junction site AgNWs increase sheet resistance reduce stability. In this study, an ionic liquid (IL)-type reducing agent containing Cl- dihydroxyl group was employed control reduction process silver (Ag) in AgNW-based precisely. The IL regulates Ag+ concentration through formation dissolution AgCl, whereas slowly reduces released form metal Ag. reduced Ag grew situ twin-crystal growth mode, facilitating atomic-level contact between This enforced decreased resistance, enhanced FTEs. As result, single-junction OSCs based chemically welded FTE achieved record power conversion efficiencies 17.52% (active area: 0.062 cm2) 15.82% 1.0 cm2). These devices also displayed bending peeling durability even under extreme test conditions.

Язык: Английский

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Achieving Record-Efficiency Organic Solar Cells upon Tuning the Conformation of Solid Additives

Journal of the American Chemical Society, Год журнала: 2022, Номер 144(32), С. 14731 - 14739

Опубликована: Июль 20, 2022

Volatile solid additives (SADs) are considered as a simple yet effective approach to tune the film morphology for high-performance organic solar cells (OSCs). However, structural effects of SADs on photovoltaic performance still elusive. Herein, two volatilizable were designed and synthesized. One is SAD1 with twisted conformation, while other one planar SAD2 S···O noncovalent intramolecular interactions (NIIs). The theoretical experimental results revealed that smaller space occupation can more easily insert between Y6 molecules, which beneficial form tighter intermolecular packing mode after thermal treatment. As result, SAD2-treated OSCs exhibited less recombination loss, balanced charge mobility, higher hole transfer rate, favorable morphology, resulting in record power conversion efficiency (PCE) 18.85% (certified PCE: 18.7%) single-junction binary OSCs. universality this study shed light understanding conformation performances

Язык: Английский

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Isomerization strategy on a non-fullerene guest acceptor for stable organic solar cells with over 19% efficiency

Energy & Environmental Science, Год журнала: 2023, Номер 16(7), С. 3119 - 3127

Опубликована: Янв. 1, 2023

Isomeric non-fullerene acceptor guest with large π-conjugation skeleton is used to construct stable organic solar cells efficiencies over 19%.

Язык: Английский

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Recent Progress of Y6‐Derived Asymmetric Fused Ring Electron Acceptors

Advanced Functional Materials, Год журнала: 2022, Номер 32(35)

Опубликована: Июль 5, 2022

Abstract Symmetric conjugated molecules can be broken through suitable synthetic strategies to construct novel asymmetric molecules, which largely broaden the material library. In field of organic solar cells, fused‐ring electron acceptors (FREAs) with A‐DA'D‐A type backbone structure have attracted much attention and enabled power conversion efficiencies (PCE) exceeding 18%. Among them, Y6 is one most classic FREAs that derive many symmetric exhibit unique optoelectronic properties. Thus, in this review, focus on recent progress Y6‐derived containing a dipyrrolobenzothiadiazole segment, classified as following three categories: end group, central core side chain. The relationship molecular structure, properties, device performance discussed detail. Finally, future design directions challenges faced by kind photovoltaic materials are given.

Язык: Английский

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Advantages, challenges and molecular design of different material types used in organic solar cells

Nature Reviews Materials, Год журнала: 2023, Номер 9(1), С. 46 - 62

Опубликована: Дек. 15, 2023

Язык: Английский

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Interface Engineering for Highly Efficient Organic Solar Cells

Advanced Materials, Год журнала: 2023, Номер 36(16)

Опубликована: Март 3, 2023

Organic solar cells (OSCs) have made dramatic advancements during the past decades owing to innovative material design and device structure optimization, with power conversion efficiencies surpassing 19% 20% for single-junction tandem devices, respectively. Interface engineering, by modifying interface properties between different layers OSCs, has become a vital part promote efficiency. It is essential elucidate intrinsic working mechanism of layers, as well related physical chemical processes that manipulate performance long-term stability. In this article, advances in engineering aimed pursue high-performance OSCs are reviewed. The specific functions corresponding principles summarized first. Then, anode layer, cathode layer interconnecting devices discussed separate categories, engineering-related improvements on efficiency stability analyzed. Finally, challenges prospects associated application emphasis large-area, high-performance, low-cost manufacturing.

Язык: Английский

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Enhancing Photon Utilization Efficiency for High‐Performance Organic Photovoltaic Cells via Regulating Phase‐Transition Kinetics

Advanced Materials, Год журнала: 2023, Номер 35(16)

Опубликована: Янв. 30, 2023

Efficient photon utilization is key to achieving high-performance organic photovoltaic (OPV) cells. In this study, a multiscale fibril network morphology in PBQx-TCl:PBDB-TF:eC9-2Cl-based system constructed by regulating donor and acceptor phase-transition kinetics. The distinctive process crystal size are systematically investigated. PBQx-TCl eC9-2Cl form structures with diameters of ≈25 nm ternary films. Additionally, fine fibrils assembled PBDB-TF uniformly distributed over the networks eC9-2Cl. ideal enables achieve superior charge transfer transport processes compared binary systems; these improvements promote enhanced efficiency. Finally, high power conversion efficiency 19.51% single-junction OPV cell achieved. external quantum optimized exceeds 85% wide range 500-800 nm. A tandem also fabricated increase solar absorption. has an excellent PCE more than 20%. This study provides guidance for constructing improving

Язык: Английский

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High‐Pressure Fabrication of Binary Organic Solar Cells with High Molecular Weight D18 Yields Record 19.65 % Efficiency

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(50)

Опубликована: Окт. 26, 2023

In this work, inspired by the principles of a pressure cooker, we utilized high-pressure method to address processing challenges associated with high molecular weight polymers. Through approach, successfully dissolved D18 in chloroform at 100 °C within pressure-tight vial. The increased steam raised boiling point and dissolving capacity chloroform, enabling creation hybrid film superior properties, including more ordered arrangement, crystallinity, extended exciton diffusion length, improved phase morphology. Organic solar cells (OSCs) based on : L8-BO prepared using achieved an outstanding power conversion efficiency 19.65 %, setting new record for binary devices date. Furthermore, was applied fabricate OSCs other common systems, leading significant enhancements device performance. summary, research introduces universal materials, ultimately resulting highest performance reported organic cells.

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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