Renewed Prospects for Organic Photovoltaics

Chemical Reviews, Год журнала: 2022, Номер 122(18), С. 14180 - 14274

Опубликована: Авг. 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.

Язык: Английский

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Single‐Junction Organic Solar Cells with 19.17% Efficiency Enabled by Introducing One Asymmetric Guest Acceptor

Advanced Materials, Год журнала: 2022, Номер 34(26)

Опубликована: Апрель 19, 2022

The ternary strategy has been widely identified as an effective approach to obtain high-efficiency organic solar cells (OSCs). However, for most OSCs, the nonradiative voltage loss lies between those of two binary devices, which limits further efficiency improvements. Herein, asymmetric guest acceptor BTP-2F2Cl is designed and incorporated into a PM1:L8-BO host blend. Compared with L8-BO neat film, L8-BO:BTP-2F2Cl blend film shows higher photoluminescence quantum yield larger exciton diffusion length. Introducing extends its absorption spectrum, improves molecular packing materials, suppresses charge recombination OSCs. Consequently, power conversion improved up 19.17% (certified value 18.7%), represents highest reported single-junction OSCs so far. results show that improving behaviors promising reducing realizing high-performance

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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Polythiophenes for organic solar cells with efficiency surpassing 17%

Joule, Год журнала: 2022, Номер 6(3), С. 647 - 661

Опубликована: Март 1, 2022

Язык: Английский

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Dimerized small-molecule acceptors enable efficient and stable organic solar cells

Joule, Год журнала: 2023, Номер 7(2), С. 416 - 430

Опубликована: Фев. 1, 2023

Язык: Английский

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High-speed sequential deposition of photoactive layers for organic solar cell manufacturing

Nature Energy, Год журнала: 2022, Номер 7(11), С. 1087 - 1099

Опубликована: Окт. 27, 2022

Язык: Английский

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Linker Engineering of Dimerized Small Molecule Acceptors for Highly Efficient and Stable Organic Solar Cells

ACS Energy Letters, Год журнала: 2023, Номер 8(3), С. 1344 - 1353

Опубликована: Фев. 8, 2023

High power conversion efficiency (PCE) and long-term stability are important requirements for commercialization of organic solar cells (OSCs). In this study, we demonstrate efficient (PCE = 18.60%) stable (t80% lifetime > 4000 h) OSCs by developing a series dimerized small-molecule acceptors (DSMAs). We prepared three different DSMAs (DYT, DYV, DYTVT) using linkers (i.e., thiophene, vinylene, thiophene– vinylene– thiophene), to connect their two Y-based building blocks. find that the crystalline properties glass transition temperature (Tg) can be systematically modulated linker selection. A DYV-based OSC achieves highest PCE (18.60%) among DSMA-based owing appropriate backbone rigidity leading an optimal blend morphology high electron mobility. Importantly, also demonstrates excellent operational under 1-sun illumination, i.e., t80% 4005 h.

Язык: Английский

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Recent progress in low‐cost noncovalently fused‐ring electron acceptors for organic solar cells

Aggregate, Год журнала: 2022, Номер 3(6)

Опубликована: Окт. 13, 2022

Abstract The power conversion efficiencies (PCEs) of organic solar cells (OSCs) have improved considerably in recent years with the development fused‐ring electron acceptors (FREAs). Currently, FREAs‐based OSCs achieved high PCEs over 19% single‐junction OSCs. Whereas relatively synthetic complexity and low yield FREAs typically result production costs, hindering commercial application In contrast, noncovalently (NFREAs) can compensate for shortcomings facilitate large‐scale industrial by virtue simple structure, facile synthesis, yield, cost, reasonable efficiency. At present, based on NFREAs exceeded 15% are expected to reach comparable efficiency as Here, advances this review provide insight into improving performance particular, paper focuses effect chemical structures molecule conformation, aggregation, packing mode. Various molecular design strategies, such core, side‐chain, terminal group engineering, presented. addition, some novel polymer all‐polymer also introduced. end, provides an outlook developing efficient, stable, low‐cost achieving applications.

Язык: Английский

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Harnessing the Structure‐Performance Relationships in Designing Non‐Fused Ring Acceptors for Organic Solar Cells

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(21)

Опубликована: Фев. 17, 2023

Abstract The prerequisite for commercially viable organic solar cells (OSC) is to reduce the efficiency‐stability‐cost gap. Therefore, cost of materials should be reduced by minimizing synthetic steps, yet maintaining molecular planarity and efficiencies achieved fused ring acceptors (FRA). In this respect, developing non‐fused (NFRA) with suitable functionalization favor conformational effective packing beneficial cost‐effective. Presently, power conversion efficiency (PCE) NFRAs around 16 %, lower than 19 % FRAs. Despite their potential, a thorough understanding structural design necessary efficient OSCs. This article pays special attention concept developed in last years analyzed approach toward improvement, an important step technological application.

Язык: Английский

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Unsymmetrically Chlorinated Non‐Fused Electron Acceptor Leads to High‐Efficiency and Stable Organic Solar Cells

Angewandte Chemie International Edition, Год журнала: 2022, Номер 62(5)

Опубликована: Ноя. 26, 2022

Searching the cost-effective organic semiconductors is strongly needed in order to facilitate practice of solar cells (OSCs), yet be fulfilled. Herein, we have succeeded developing two non-fused ring electron acceptors (NFREAs), leading highest efficiency 16.2 % for NFREA derived OSCs. These OSCs exhibit superior operational stabilities under one sun equivalent illumination without ultraviolet (UV) filtration. It revealed that modulation halogen substituents on aromatic side chains, as new structural tool tune intermolecular interaction and optoelectronic properties acceptors, not only promotes interlocked tic-tac-toe frame three-dimensional stacks solid, but also improves charge dynamics enable high-performance stable

Язык: Английский

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