A dendritic hexamer acceptor enables 19.4% efficiency with exceptional stability in organic solar cells

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Янв. 20, 2025

Язык: Английский

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Recent development in solid additives enables high-performance organic solar cells

EnergyChem, Год журнала: 2024, Номер 6(4), С. 100129 - 100129

Опубликована: Июнь 15, 2024

Язык: Английский

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Asymmetrified Benzothiadiazole‐Based Solid Additives Enable All‐Polymer Solar Cells with Efficiency Over 19 %

Angewandte Chemie International Edition, Год журнала: 2024, Номер 64(1)

Опубликована: Авг. 24, 2024

Disordered polymer chain entanglements within all-polymer blends limit the formation of optimal donor-acceptor phase separation. Therefore, developing effective methods to regulate morphology evolution is crucial for achieving morphological features in organic solar cells (APSCs). In this study, two isomers, 4,5-difluorobenzo-c-1,2,5-thiadiazole (SF-1) and 5,6-difluorobenzo-c-1,2,5-thiadiazole (SF-2), were designed as solid additives based on widely-used electron-deficient benzothiadiazole unit nonfullerene acceptors. The incorporation SF-1 or SF-2 into PM6 : PY-DT blend induces stronger molecular packing via interaction, leading continuous interpenetrated networks with suitable phase-separation vertical distribution. Furthermore, after treatment SF-2, exciton diffusion lengths films are extended over 40 nm, favoring charge transport. asymmetrical characterized by an enhanced dipole moment, increases power conversion efficiency (PCE) PY-DT-based device 18.83 % due electrostatic interactions. Moreover, a ternary strategy boosts PCE SF-2-treated APSC 19 %. This work not only demonstrates one best performances APSCs but also offers approach manipulate using rational-designed additives.

Язык: Английский

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Solid Additive Engineering for Next‐generation Organic Photovoltaics

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 22, 2024

Abstract Solution‐processed bulk heterojunction (BHJ) organic solar cells (OSCs) have emerged as a promising next‐generation photovoltaic technology. In this emerging field, there is growing trend of employing solid additives (SAs) to fine‐tune the BHJ morphology and unlock full potential OSCs. SA engineering offers several significant benefits for commercialization, including ability i) control film‐forming kinetics expedite high‐throughput fabrication, ii) leverage weak noncovalent interactions between materials enhance efficiency stability OSCs, iii) simplify procedures facilitate cost‐effective production scaling‐up. These features make key catalyst accelerating development Recent breakthroughs shown that can achieve an 19.67% in single‐junction demonstrating its effectiveness promoting commercialization devices. This review provides comprehensive overview pivotal contributions SAs, focusing on their roles governing dynamics, stabilizing phase separation, addressing other crucial aspects. The rationale design rules SAs highly efficient stable OSCs are also discussed. Finally, remaining challenges summarized, perspectives future advances offered.

Язык: Английский

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In-situ understanding on the formation of fibrillar morphology in green solvent processed all-polymer solar cells

National Science Review, Год журнала: 2024, Номер 11(12)

Опубликована: Ноя. 4, 2024

ABSTRACT Solid additive engineering has been intensively explored on morphology tuning for highly efficient all-polymer solar cells (all-PSCs), a promising photovoltaic technology towards multi-scenario application. Although the nano-fibrillar network of active layer induced by treatment is confirmed as key factor power conversion efficiency (PCE) all-PSCs, its formation mechanism not clearly revealed, lack precise and convincing real-time observation crystallization phase separation during liquid-to-solid transition process spin-coating. Herein we report an in-situ grazing incidence wide-angle/small-angle X-ray scattering (GIWAXS/GISAXS) screening that reveals fact naphthalene derived solid additives can suppress aggregation polymer acceptor (PY-IT) at beginning stage spin coating, which provides sufficient time space donor (PM6) to form fibril structure. Moreover, guided this knowledge, ternary system proposed, achieves cutting-edge level PCEs both small-area (0.04 cm2) (also decent operational stability) large-area (1 devices.

Язык: Английский

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A systematic investigation on pyridine derived solid additives inducing fibrillar morphology for highly efficient organic solar cells with over 20 % efficiency

Materials Science and Engineering R Reports, Год журнала: 2025, Номер 164, С. 100977 - 100977

Опубликована: Март 18, 2025

Язык: Английский

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Enhancing Organic Solar Cell Efficiency with Ester-Based Quinoxaline Non-Fullerene Acceptors in Ternary Blends

Nano Energy, Год журнала: 2025, Номер unknown, С. 110801 - 110801

Опубликована: Фев. 1, 2025

Язык: Английский

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Balancing carrier mobility with solvent-solid hybrid additives for high-performance non-fullerene organic solar cells

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161037 - 161037

Опубликована: Фев. 1, 2025

Язык: Английский

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Volatile Imide Additives with Large Dipole and Special Film Formation Kinetics Enable High‐Performance Organic Solar Cells

Angewandte Chemie International Edition, Год журнала: 2025, Номер unknown

Опубликована: Март 6, 2025

Large dipole moment additives have strong interactions with the host materials, which can optimize morphology and improve photovoltaic performance of organic solar cells (OSCs). However, these are difficult to remove due their intermolecular interactions, may impair stability. Developing volatile large moments is challenging. Herein, we first report imide that could effectively OSCs through modification. Three N-(o-chlorophenyl)phthalimide (oClPA), N-(m-chlorophenyl)phthalimide (mClPA), N-(p-chlorophenyl)phthalimide (pClPA) were screened investigate effort positional isomerization on molecular configuration interaction. These (ClPAs) larger (2.0664 Debye for oClPA, 4.2361 mClPA, 4.7896 pClPA) compared reported solid additives. In contrast traditional simultaneous nucleation crystal growth, ClPAs induce acceptor nucleate then grow, contributes forming high-quality domains better crystallinity. To our knowledge, this unique film formation kinetics was first. The power conversion efficiency (PCE) based PM6:BTP-eC9 treated pClPA improved from 16.13 % 18.58 %. Additive also performed well in PM6:L8-BO, PM6:Y6, D18:L8-BO systems, a high PCE 19.04 achieved. Our results indicate using unit construct simple effective strategy, halogen atom has effect performance.

Язык: Английский

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Suppressed Non-Radiative Loss and Efficient Hole Transfer at Small Highest Occupied Molecular Orbital Offset Enables 19.73% Efficiency Binary Organic Solar Cells with Small Efficiency-Cost Gap

Energy & Environmental Science, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 15, 2024

Two novel acceptors are designed and synthesized, the PTQ11:PEH-F binary system is highly promising for industrial cost-effective organic photovoltaics.

Язык: Английский

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