Interface Engineering for Highly Efficient Organic Solar Cells

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(16)

Published: March 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.

Language: Английский

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Stability of organic solar cells: toward commercial applications

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(5), P. 2350 - 2387

Published: Jan. 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.

Language: Английский

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Improving the Stability of Organic Solar Cells: From Materials to Devices

Solar RRL, Journal Year: 2023, Volume and Issue: 7(20)

Published: Aug. 24, 2023

Organic solar cells (OSCs) are a promising emerging photovoltaic technology for energy conversion. Recently, the power conversion efficiencies of OSCs have been improved to get closer their Schottky–Queisser limit. However, operational stability remains as major challenge ahead deployment practical applications. The main causes OSC instability stem from poor intrinsic materials, metastable morphology multicomponent active layer, unstable interfaces, and sensitivity moisture oxygen. To address these issues, it is necessary comprehensive in‐depth understanding fundamentals develop an integrated solution overcome them. Herein, state‐of‐art strategies used improve aspects material design, device processing, encapsulation techniques, in hope delivering rational solutions, summarized. In end, prospects toward future development efficient stable provided.

Language: Английский

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What is the Limit Size of 2D Conjugated Extension on Central Units of Small Molecular Acceptors in Organic Solar Cells?

Small, Journal Year: 2024, Volume and Issue: 20(32)

Published: March 15, 2024

Abstract 2D conjugated extension on central units of small molecular acceptors (SMAs) has gained great successes in reaching the state‐of‐the‐art organic photovoltaics. Whereas limit size planes and their dominant role constructing 3D intermolecular packing networks are still elusive. Thus, by exploring a series SMAs with gradually enlarged planes, it is demonstrated that, at both single aggerated levels, there an unexpected blue‐shift for film absorption but preferable reorganization energies, exciton lifetimes binding energies enlarging, especially when comparing to Y6 counterpart. More importantly, significance well‐balanced modes involving end first disclosed through systematic crystal analysis, indicating that ratio area/end terminals area no more than 3 likely provides preferred network SMAs. By This work indicates structural profiles ideal may require suitable unit together proper heteroatom replacement instead directly overextending maximum. These results will provide some guidelines future better design.

Language: Английский

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Efficient and stable inverted structure organic solar cells utilizing surface-modified SnO2 as the electron transport layer

Nano Energy, Journal Year: 2023, Volume and Issue: 118, P. 109032 - 109032

Published: Oct. 27, 2023

Language: Английский

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Beyond Conventional Enhancements: Self‐Organization of a Buffer Material on Tin Oxide as a Game‐Changer for Improving the Performance of Inverted Organic Solar Cells

Small, Journal Year: 2024, Volume and Issue: unknown

Published: June 5, 2024

Abstract Inverted organic solar cells (OSCs) have garnered significant interest due to their remarkable stability. In this study, the efficiency and stability of inverted OSCs are enhanced via in situ self‐organization (SO) an interfacial modification material Phen‐NaDPO onto tin oxide (SnO 2 ). During device fabrication, is spin‐coated with active materials all together on SnO . Driven by interactions thermodynamic forces its high surface energy convection flow, spontaneously migrates interface, resulting formation layer This not only effectively reduces work function , but also enhances ordered molecular stacking manipulates vertical morphology layer, which suppress trap‐assisted recombination minimize charge extraction. As a result, SO devices based PM6:Y6 exhibit significantly improved photovoltaic performance power conversion 17.62%. Moreover, improved. Furthermore, ternary PM6:D18:L8‐BO achieved impressive PCE 18.87%, standing as one highest values for single‐junction date.

Language: Английский

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Suppressing Static and Dynamic Disorder for High‐Efficiency and Stable Thick‐Film Organic Solar Cells via Synergistic Dilution Strategy

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 28, 2024

Abstract Developing stable and highly efficient thick‐film organic solar cells (OSCs) is crucial for the large‐scale commercial application of photovoltaics. A novel synergistic dilution strategy to address this issue, using Polymethyl Methacrylate (PMMA) ‐modified zinc oxide (ZnO) as interfacial layer, introduced. This effectively mitigates oxygen defects in ZnO while also regulating self‐assembly process active layer achieve an ordered distribution donors acceptors. In diluted devices, dynamic disorder reduced owing suppression electron‐phonon coupling, static suppressed by improved molecular stacking enhanced intermolecular interactions. Consequently, 300 nm PM6:L8‐BO device post‐synergistic manifests a marked enhancement performance, achieving photovoltaic power conversion efficiency (PCE) >17% with excellent thermal stability. typical ternary system selected explore general applicability strategy, PCE has been significantly from 17.89% 18.72%, which falls within range highest values among inverted single junction OSCs. As practical that depends on pivotal synergy between high stability, approach paves way implementation OSCs ensures cost‐effectiveness.

Language: Английский

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Brominated Perylene Diimides as Cathode Interface Materials for High Efficiency Organic Solar Cells

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 30, 2024

Abstract The cathode interface materials (CIMs) are crucial for organic solar cells (OSCs). Herein, excellent CIMs PDINN‐Br and PDINN‐2Br reported, by bromination of PDINN. Both them have strong work function (WF) tunability, self‐doping properties, film‐forming properties. They show higher electron mobility (over 2 × 10 −4 cm V −1 s ) conductivity (≈5 −5 S than Grazing‐incidence wide‐angle X‐ray scattering measurements (GIWAXS) illustrate that has more ordered arrangement PDINN PDINN‐Br. PDINN, PDINN‐Br, in PM6:Y6‐based OSCs lead to 15.96%, 16.71%, 17.03% power conversion efficiency (PCE), respectively. well performance as the PM6:PYIT D18:L8BO OSCs, PCEs 18.14% 18.98% obtained, respectively, which (16.97% 18.01%).

Language: Английский

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Simple and Low‐Cost Vanadyl Oxalate as Hole Transporting Layer Enables Efficient Organic Solar Cells

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(1)

Published: Sept. 22, 2023

Abstract Organic solar cells (OSCs) with the conventional configuration usually use polyethylenedioxythiophene:polystyrene sulfonate (PEDOT:PSS) as hole‐transporting layer (HTL); however, its acidity tends to affect performance and long‐term stability of devices. Therefore, replacing PEDOT:PSS other more stable HTLs is essential for realizing practical applications OSCs. To achieve this goal, a simple low‐cost vanadyl oxalate (VOC 2 O 4 ) identified HTL facilitate high power conversion efficiencies (PCEs), good stability, thickness tolerance be achieved in The VOC thin film can easily prepared by spin‐coating from aqueous solution onto ITO/glass substrate thermally annealed at 100 °C exhibit transmittance, conductivity, work function. It applied robust wide processing conditions, especially after being heated 200 treated UV‐ozone (UVO) afford very PCE 18.94% This value among highest PCEs obtained binary In addition, derived OSCs better than those based on HTL. These results reveal that an excellent OSCs, having great potential large‐area device applications.

Language: Английский

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A universal three-dimensional metal-organic frameworks assisted strategy facilitates non-covalent interaction of active/interfacial layers for over 19 % efficiency organic photovoltaics

Progress in Organic Coatings, Journal Year: 2025, Volume and Issue: 201, P. 109111 - 109111

Published: Feb. 6, 2025

Language: Английский

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