Tuning polymer-backbone coplanarity and conformational order to achieve high-performance printed all-polymer solar cells DOI Creative Commons
Yilei Wu, Yue Yuan, Diego Sorbelli

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: March 9, 2024

All-polymer solar cells (all-PSCs) offer improved morphological and mechanical stability compared with those containing small-molecule-acceptors (SMAs). They can be processed a broader range of conditions, making them desirable for printing techniques. In this study, we report high-performance polymer acceptor design based on bithiazole linker (PY-BTz) that are par SMAs. We demonstrate induces more coplanar ordered conformation to bithiophene due the synergistic effect non-covalent backbone planarization reduced steric encumbrances. As result, PY-BTz shows significantly higher efficiency 16.4% in comparison acceptors commonly used thiophene-based linkers (i.e., PY-2T, 9.8%). Detailed analyses reveal improvement is associated enhanced conjugation along closer interchain π-stacking, resulting charge mobilities, suppressed recombination, energetic disorder. Remarkably, an 14.7% realized all-PSCs solution-sheared ambient which among highest devices prepared under conditions relevant scalable This work uncovers strategy promoting emerging lead superior all-PSCs.

Language: Английский

A Vinylene‐Linker‐Based Polymer Acceptor Featuring a Coplanar and Rigid Molecular Conformation Enables High‐Performance All‐Polymer Solar Cells with Over 17% Efficiency DOI
Han Yu, Yan Wang, Ha Kyung Kim

et al.

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(27)

Published: March 22, 2022

State-of-art Y-series polymer acceptors are typically based on a mono-thiophene linker, which can cause some twisted molecular conformations and thus limit the performance of all-polymer solar cells (all-PSCs). Here, high-performance acceptor vinylene linkers is reported, leads to surprising changes in polymers' conformations, optoelectronic properties, enhanced photovoltaic performance. It found that thiophene or bithiophene (PY-T-γ PY-2T-γ) display significant twisting between end-groups linker units, while vinylene-based (PY-V-γ) exhibits more coplanar rigid conformation. As result, PY-V-γ demonstrates better conjugation tighter interchain stacking, results higher mobility reduced energetic disorder. Furthermore, detailed morphology investigations reveal PY-V-γ-based blend high domain purity fill factor its all-PSCs. With these, efficiency 17.1% achieved all-PSCs, highest reported for binary all-PSCs date. This work vinylene-linker superior unit build with chain conformation, beneficial aggregation efficient

Language: Английский

Citations

204
Recent progress in organic solar cells based on non-fullerene acceptors: materials to devices DOI
Dou Luo, Woongsik Jang, Dickson D. Babu

et al.

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

Citations

171
Advantages, challenges and molecular design of different material types used in organic solar cells DOI
Jicheng Yi, Guangye Zhang, Han Yu

et al.

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

Published: Dec. 15, 2023

Language: Английский

Citations

162
Dimerized small-molecule acceptors enable efficient and stable organic solar cells DOI Creative Commons

Cheng Sun,

Jin‐Woo Lee, Changyeon Lee

et al.

Joule, Journal Year: 2023, Volume and Issue: 7(2), P. 416 - 430

Published: Feb. 1, 2023

Language: Английский

Citations

150
Material Design and Device Fabrication Strategies for Stretchable Organic Solar Cells DOI
Jin Su Park,

Geon‐U Kim,

Seungjin Lee

et al.

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(31)

Published: June 28, 2022

Abstract Recent advances in the power conversion efficiency (PCE) of organic solar cells (OSCs) have greatly enhanced their commercial viability. Considering technical standards (e.g., mechanical robustness) required for wearable electronics, which are promising application platforms OSCs, development fully stretchable OSCs (f‐SOSCs) should be accelerated. Here, a comprehensive overview f‐SOSCs, aimed to reliably operate under various forms stress, including bending and multidirectional stretching, is provided. First, requirements terms tensile cohesion/adhesion properties, summarized along with experimental methods evaluate those properties. Second, essential studies make each layer f‐SOSCs efficient discussed, emphasizing strategies simultaneously enhance photovoltaic properties active layer, ranging from material design fabrication control. Key improvements other components/layers (i.e., substrate, electrodes, interlayers) also covered. Lastly, considering that f‐SOSC research its infancy, current challenges future prospects explored.

Language: Английский

Citations

140
18.2%-efficient ternary all-polymer organic solar cells with improved stability enabled by a chlorinated guest polymer acceptor DOI Creative Commons
Rui Sun, Tao Wang, Qunping Fan

et al.

Joule, Journal Year: 2023, Volume and Issue: 7(1), P. 221 - 237

Published: Jan. 1, 2023

Language: Английский

Citations

130
Linker Engineering of Dimerized Small Molecule Acceptors for Highly Efficient and Stable Organic Solar Cells DOI
Jin‐Woo Lee,

Cheng Sun,

Changyeon Lee

et al.

ACS Energy Letters, Journal Year: 2023, Volume and Issue: 8(3), P. 1344 - 1353

Published: Feb. 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.

Language: Английский

Citations

101
Controlling Morphology and Voltage Loss with Ternary Strategy Triggers Efficient All-Small-Molecule Organic Solar Cells DOI

Mengyun Jiang,

Hong‐Fu Zhi,

Bao Zhang

et al.

ACS Energy Letters, Journal Year: 2023, Volume and Issue: 8(2), P. 1058 - 1067

Published: Jan. 23, 2023

Herein, an emerging acceptor L8-BO as the third component was combined with B1:BO-4Cl system for constructing efficient ternary all-small-molecule organic solar cells (ASM-OSCs). Theoretical, morphological, and crystallographic studies reveal that BO-4Cl possess good compatibility, resulting in alloy-like state formation of two acceptors blends. The synergistic effect is conducive to forming favorable phase separation molecular stacking promoting charge splitting extraction, which contributes simultaneously boosting short-circuit current density fill factor. Furthermore, higher lowest unoccupied orbital energy level assist ASM-OSCs achieving lower voltage loss respect binary devices. optimal 20 wt % deliver a top-level efficiency 17.10%. This work demonstrates not only morphology but also small matrix can be well-manipulated by employing strategy.

Language: Английский

Citations

95
High performance polymerized small molecule acceptor by synergistic optimization on π-bridge linker and side chain DOI Creative Commons
Guangpei Sun,

Xin Jiang,

Xiaojun Li

et al.

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Sept. 7, 2022

The polymerized small-molecule acceptors have attracted great attention for application as polymer acceptor in all-polymer solar cells recently. modification of small molecule building block and the π-bridge linker is an effective strategy to improve photovoltaic performance acceptors. In this work, we synthesized a new PG-IT2F which representative PY-IT by replacing its upper linear alkyl side chains on with branched attaching difluorene substituents thiophene linker. Through synergistic optimization, possesses more suitable phase separation, increased charge transportation, better exciton dissociation, lower bimolecular recombination, longer transfer state lifetime than their PM6 donor. Therefore, devices based PM6:PG-IT2F demonstrated high power conversion efficiency 17.24%, one highest reported binary all date. This work indicates that regulation plays key role designing developing highly efficient

Language: Английский

Citations

90
Achieving 15.81% and 15.29% efficiency of all-polymer solar cells based on layer-by-layer and bulk heterojunction structures DOI
Wenjing Xu, Xixiang Zhu, Xiaoling Ma

et al.

Journal of Materials Chemistry A, Journal Year: 2022, Volume and Issue: 10(25), P. 13492 - 13499

Published: Jan. 1, 2022

PCEs of 15.81% and 15.29% are achieved in LbL BHJ all-PSCs with polymer donor PM6, acceptor PY-IT CN as an additive. Over 15% PCE improvement can be obtained active layers.

Language: Английский

Citations

88