Renewed Prospects for Organic Photovoltaics

Chemical Reviews, Journal Year: 2022, Volume and Issue: 122(18), P. 14180 - 14274

Published: Aug. 5, 2022

Organic photovoltaics (OPVs) have progressed steadily through three stages of photoactive materials development: (i) use poly(3-hexylthiophene) and fullerene-based acceptors (FAs) for optimizing bulk heterojunctions; (ii) development new donors to better match with FAs; (iii) non-fullerene (NFAs). The application NFAs an A–D–A configuration (where A = acceptor D donor) has enabled devices efficient charge generation small energy losses (Eloss < 0.6 eV), resulting in substantially higher power conversion efficiencies (PCEs) than FA-based devices. discovery Y6-type (Y6 2,2′-((2Z,2′Z)-((12,13-bis(2-ethylhexyl)-3,9-diundecyl-12,13-dihydro-[1,2,5]-thiadiazolo[3,4-e]-thieno[2″,3″:4′,5′]thieno-[2′,3′:4,5]pyrrolo-[3,2-g]thieno-[2′,3′:4,5]thieno-[3,2-b]indole-2,10-diyl)bis(methanylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile) A–DA′ D–A further propelled the PCEs go beyond 15% due smaller Eloss values (∼0.5 eV) external quantum efficiencies. Subsequently, Y6-series single-junction increased >19% may soon approach 20%. This review provides update recent progress OPV following aspects: developments novel donors, understanding structure–property relationships underlying mechanisms state-of-the-art OPVs, tasks underpinning commercialization such as device stability, module development, potential applications, high-throughput manufacturing. Finally, outlook prospects section summarizes remaining challenges technology.

Language: Английский

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Volatilizable Solid Additive‐Assisted Treatment Enables Organic Solar Cells with Efficiency over 18.8% and Fill Factor Exceeding 80%

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(48)

Published: Sept. 27, 2021

Controlling the self-assembling of organic semiconductors to form well-developed nanoscale phase separation in bulk-heterojunction active layer is critical yet challenging for building high-performance solar cells (OSCs). Particularly, similar anisotropic conjugated structures between nonfullerene acceptors and p-type semiconductor donors raise more complexity on manipulating their aggregation toward appropriate separation. Herein, a new approach tune morphology photoactive developed by utilizing synergistic effect dithieno[3,2-b:2',3'-d]thiophene (DTT) 1-chloronaphthalene (CN). The volatilizable solid additive DTT with high crystallinity can restrict over during film casting process, then allowing refining molecular packing simultaneous volatilization under thermal annealing. Consequently, PTQ10:m-BTP-PhC6:PC71 BM-based ternary OSCs processed dual additives CN record notable power-conversion efficiency 18.89%, remarkable FF 80.6%.

Language: Английский

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Progress and prospects of the morphology of non-fullerene acceptor based high-efficiency organic solar cells

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 14(8), P. 4341 - 4357

Published: Jan. 1, 2021

This review summarizes the important morphological characteristics and recent research progress of non-fullerene acceptor based organic solar cells, as well provides insights perspectives on this topic.

Language: Английский

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Recent progress in organic solar cells based on non-fullerene acceptors: materials to devices

Journal of Materials Chemistry A, Journal Year: 2022, Volume and Issue: 10(7), P. 3255 - 3295

Published: Jan. 1, 2022

This review presents the recent progress in organic solar cells based on non-fullerene acceptors, with a wide coverage from material synthesis and processing to interface engineering, device structure, large-area fabrication, stability.

Language: Английский

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

Nature Reviews Materials, Journal Year: 2023, Volume and Issue: 9(1), P. 46 - 62

Published: Dec. 15, 2023

Language: Английский

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A Synergistic Strategy of Manipulating the Number of Selenophene Units and Dissymmetric Central Core of Small Molecular Acceptors Enables Polymer Solar Cells with 17.5 % Efficiency

Angewandte Chemie International Edition, Journal Year: 2021, Volume and Issue: 60(35), P. 19241 - 19252

Published: June 3, 2021

Abstract A dissymmetric backbone and selenophene substitution on the central core was used for synthesis of symmetric or A‐DA′D‐A type non‐fullerene small molecular acceptors (NF‐SMAs) with different numbers selenophene. From S‐YSS‐Cl to A‐WSSe‐Cl S‐WSeSe‐Cl , a gradually red‐shifted absorption larger electron mobility crystallinity in neat thin film observed. exhibit stronger tighter intermolecular π–π stacking interactions, extra S⋅⋅⋅N non‐covalent interactions from benzothiadiazole, better ordered 3D interpenetrating charge‐transfer networks comparison thiophene‐based . The ‐based device has PCE 17.51 %, which is highest value selenophene‐based NF‐SMAs binary polymer solar cells. combination precise replacement effective improve J sc FF without sacrificing V oc

Language: Английский

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Advances in organic photovoltaic cells: a comprehensive review of materials, technologies, and performance

RSC Advances, Journal Year: 2023, Volume and Issue: 13(18), P. 12244 - 12269

Published: Jan. 1, 2023

The paper analyzes the key features, performance, efficiency, and electrical characteristics of organic PV cells to highlight latest trends advancements by using comparative tables a comprehensive SWOT analysis.

Language: Английский

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Alkyl‐Chain Branching of Non‐Fullerene Acceptors Flanking Conjugated Side Groups toward Highly Efficient Organic Solar Cells

Advanced Energy Materials, Journal Year: 2021, Volume and Issue: 11(47)

Published: Oct. 29, 2021

Abstract Side‐chain modifications of non‐fullerene acceptors (NFAs) are essential for harvesting their full potential in organic solar cells (OSC). Here, an effective alkyl‐chain‐branching approach the Y‐series NFAs flanking meta‐substituted phenyl side groups at outer positions is demonstrated. Compared to BTP‐4F‐PC6 with linear m ‐hexylphenyl chains, two new named BTP‐4F‐P2EH and BTP‐4F‐P3EH developed bulkier alkyl chains branched β γ positions, respectively. These result altered molecular packing afford higher open‐circuit voltage devices. Despite blue‐shifted absorption branched‐chain NFAs, blends PBDB‐T‐2F enable improved short‐circuit current density corresponding devices owing more suitable phase separation better exciton dissociation. Consequently, OSCs based on yield enhanced device performance 18.22% 17.57%, respectively, outperforming BTP‐4F‐PC6‐based ones (17.22%). results highlight that side‐chain branching design has great optimizing properties promoting photovoltaic performance.

Language: Английский

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Non-fullerene acceptors with hetero-dihalogenated terminals induce significant difference in single crystallography and enable binary organic solar cells with 17.5% efficiency

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 15(1), P. 320 - 333

Published: Oct. 6, 2021

A synergistic hetero-dihalogenated terminals strategy was systematically employed for the first time to enhance single-crystal packing, boosting device performance of a Y-BO-FCl:PM6 with remarkable PCE 17.52%.

Language: Английский

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Photon management to reduce energy loss in perovskite solar cells

Chemical Society Reviews, Journal Year: 2021, Volume and Issue: 50(12), P. 7250 - 7329

Published: Jan. 1, 2021

We systematically and hierarchically reviewed all of the photon management strategies to overcome energy loss in perovskite solar cells hope guide researchers achieve efficient light-harvesting semiconductor optoelectronic devices.

Language: Английский

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