Ternary Blend Organic Solar Cells: Understanding the Morphology from Recent Progress

Advanced Materials, Journal Year: 2021, Volume and Issue: 34(46)

Published: Nov. 19, 2021

Ternary blend organic solar cells (TB-OSCs) incorporating multiple donor and/or acceptor materials into the active layer have emerged as a promising strategy to simultaneously improve overall device parameters for realizing higher performances than binary devices. Whereas introducing also results in more complicated morphology their counterparts. Understanding is crucially important further improving performance of TB-OSC. This review introduces solubility and miscibility that affect ternary blends. Then, this summarizes recent processes study on blends from aspects molecular crystallinity, packing orientation, domain size purity, directly observation morphology, vertical phase separation well morphological stability. Finally, summary prospects TB-OSCs are concluded.

Language: Английский

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Achieving high efficiency and well-kept ductility in ternary all-polymer organic photovoltaic blends thanks to two well miscible donors

Matter, Journal Year: 2022, Volume and Issue: 5(2), P. 725 - 734

Published: Jan. 4, 2022

Language: Английский

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High-Efficiency Ternary Organic Solar Cells with a Good Figure-of-Merit Enabled by Two Low-Cost Donor Polymers

ACS Energy Letters, Journal Year: 2022, Volume and Issue: 7(8), P. 2547 - 2556

Published: July 13, 2022

Here, we combine two donor polymers with a relatively short synthesis method and fabricate ternary organic solar cells (OSCs) high efficiency decent figure-of-merit. A series of characterizations show that the optimal morphology blend is result coupling competition PTQ10 PTVT-T, where molecular packing phase separation motif broken but strong aggregation PTVT-T suppressed, resulting in efficient charge transport collection, as well suppressed bimolecular recombination. Moreover, previously reported solvent-vapor-assisted casting method, taken an understanding-guided optimization, pushes system's to 19.11%. Furthermore, PTVT-T-containing systems clearly better light soaking thermal stability than binary control system, benefiting from durable polymer matrix. Our work provides useful approach for developing efficient, stable, low-cost OSCs based on state-of-the-art donor/acceptor through design.

Language: Английский

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Unveiling the Morphological and Physical Mechanism of Burn‐in Loss Alleviation by Ternary Matrix Toward Stable and Efficient All‐Polymer Solar Cells

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(18)

Published: Feb. 10, 2023

All-polymer solar cells (All-PSCs) are considered the most promising candidate in achieving both efficient and stable organic photovoltaic devices, yet field has rarely presented an in-depth understanding of corresponding device stability while efficiency is continuously boosted via innovation polymer acceptors. Herein, a ternary matrix built for all-PSCs with optimized morphology, improved film ductility importantly, better operational than its parental binary counterparts, as platform to study underlying mechanism. The target system PQM-Cl:PTQ10:PY-IT (0.8:0.2:1.2) exhibits alleviated burn-in loss morphology under light soaking, which supports promoted lifetime. comprehensive characterizations fresh light-soaked active layers lead clear illustration opposite morphological physical degradation direction PQM-Cl PTQ10, thus resulting delicate balance at optimal system. Specifically, enlarging tendency shrinking preference PTQ10 terms phase separation leads their mixing phase; hole transfer kinetics PQM-Cl:PY-IT host stabilized by incorporating PTQ10. This work succeeds reaching deep insight into all-PSC's promotion rational design, booms prospect gaining high-performance all-PSCs.

Language: Английский

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Over 17.4% Efficiency of Layer‐by‐Layer All‐Polymer Solar Cells by Improving Exciton Utilization in Acceptor Layer

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(28)

Published: March 27, 2023

Abstract Layer‐by‐layer all‐polymer solar cells (LbL all‐PSCs) are prepared with PM6 and PY‐IT by using sequential spin coating method. The exciton dissociation efficiency in acceptor layer near electrode is rather low due to the limited diffuse distance impossible energy transfer from narrow bandgap wide donor. In this study, less incorporated into enhance electrode. A power conversion (PCE) of 17.45% achieved LbL all‐PSCs incorporating 10 wt% layer, which much larger than 16.04% PCE PM6/PY‐IT‐based all‐PSCs. Over 8% enhancement can be realized attributed enhanced utilization layers confirmed quenched photoluminescence (PL) emission PY‐IT:PM6 films. Meanwhile, charge transport optimized PM6, as molecular arrangement. This study indicates that strategy donor has great potential fabricating efficient improving

Language: Английский

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Recent Progress in π-Conjugated Polymers for Organic Photovoltaics: Solar Cells and Photodetectors

Progress in Polymer Science, Journal Year: 2023, Volume and Issue: 143, P. 101711 - 101711

Published: June 25, 2023

Language: Английский

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Recent Developments of Polymer Solar Cells with Photovoltaic Performance over 17%

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(14)

Published: Jan. 22, 2023

Abstract With the emergence of ADA'DA‐type (Y‐series) non‐fullerene acceptors (NFAs), power conversion efficiencies (PCEs) organic photovoltaic devices have been constantly refreshed and gradually reached 20% in recent years (19% for single junction tandem device). The possess specific design concept, which greatly enrich NFA types excellent compatibility with many donor materials. It is gratifying to note that previously underperforming materials combine these regulated shine again. Nowadays, concept modular widely used research donors, injecting new vitality into field photovoltaics. Furthermore, also promote multicomponent devices, bilayer processing solvent engineering, additive engineering. Herein, latest progresses polymer solar cells efficiency over 17% are briefly reviewed from aspects active material design, interface development, device technology. At last, opportunities challenges commercialization future discussed.

Language: Английский

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Photovoltaic properties and enhancement in near-infrared light absorption capabilities of acceptor materials for organic solar cell applications: A quantum chemical perspective via DFT

Journal of Physics and Chemistry of Solids, Journal Year: 2022, Volume and Issue: 171, P. 110996 - 110996

Published: Sept. 14, 2022

Language: Английский

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Recent research progress of all-polymer solar cells based on PSMA-type polymer acceptors

Chem, Journal Year: 2023, Volume and Issue: 9(7), P. 1702 - 1767

Published: June 21, 2023

Language: Английский

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Two Compatible Acceptors as an Alloy Model with a Halogen-Free Solvent for Efficient Ternary Polymer Solar Cells

ACS Applied Materials & Interfaces, Journal Year: 2022, Volume and Issue: 14(7), P. 9386 - 9397

Published: Feb. 11, 2022

A ternary strategy of halogen-free solvent processing can open up a promising pathway for the preparation polymer solar cells (PSCs) on large scale and effectively improve power conversion efficiency with an appropriate third component. Herein, green o-xylene (o-XY) is used as main solvent, non-fullerene acceptor Y6-DT-4F component introduced into PBB-F:IT-4F binary system to broaden spectral absorption optimize morphology achieve efficient PSCs. The component, Y6-DT-4F, compatible IT-4F form "alloy acceptor", which synergistically photon capture, carrier transport, collection capabilities device. Meanwhile, has strong crystallinity, so when enhance crystallization, conducive charge transport. Consequently, optimal based PBB-F:IT-4F:Y6-DT-4F achieved 15.24%, higher than that device (13.39%).

Language: Английский

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