Adding a Third Component with Reduced Miscibility and Higher LUMO Level Enables Efficient Ternary Organic Solar Cells DOI
Ruijie Ma, Tao Liu, Zhenghui Luo

et al.

ACS Energy Letters, Journal Year: 2020, Volume and Issue: 5(8), P. 2711 - 2720

Published: Aug. 3, 2020

It is widely known that the miscibility between donor and acceptor a crucial factor affects morphology thus device performance of nonfullerene organic solar cells (OSCs). In this Letter, we show incorporating third component with lower higher lowest unoccupied molecular orbital (LUMO) level into state-of-the-art PM6:Y6 system can significantly enhance devices. The best results ternary devices are achieved by adding small named ITCPTC (∼5% w/w), which improves power conversion efficiency (PCE) host from 16.44% to 17.42%. LUMO increases open-circuit voltage (VOC), while low enlarges domains leads improved short-circuit current density (JSC) fill (FF). efficacy strategy supported using other components including an asymmetric molecule (N7IT) polymer (PF2-DTC), play same role as boost PCEs 16.96% 17.04%, respectively. Our approach be potentially applied wide range OSC material systems should facilitate development field.

Language: Английский

Machine learning for high performance organic solar cells: current scenario and future prospects DOI
Asif Mahmood, Jin‐Liang Wang

Energy & Environmental Science, Journal Year: 2020, Volume and Issue: 14(1), P. 90 - 105

Published: Nov. 26, 2020

In this review, current research status about the machine learning use in organic solar cell is reviewed. We have discussed challenges anticipating data driven material design.

Language: Английский

Citations

312
Asymmetric Electron Acceptors for High‐Efficiency and Low‐Energy‐Loss Organic Photovoltaics DOI
Shuixing Li, Lingling Zhan, Yingzhi Jin

et al.

Advanced Materials, Journal Year: 2020, Volume and Issue: 32(24)

Published: May 11, 2020

Low energy loss and efficient charge separation under small driving forces are the prerequisites for realizing high power conversion efficiency (PCE) in organic photovoltaics (OPVs). Here, a new molecular design of nonfullerene acceptors (NFAs) is proposed to address above two issues simultaneously by introducing asymmetric terminals. Two NFAs, BTP-S1 BTP-S2, constructed halogenated indandione (A1 ) 3-dicyanomethylene-1-indanone (A2 as different conjugated terminals on central fused core (D), wherein they share same backbone well-known NFA Y6, but at Such NFAs with A1 -D-A2 structure exhibit superior photovoltaic properties when blended polymer donor PM6. Energy analysis reveals that molecule BTP-S2 six chlorine atoms attached enables corresponding devices give an outstanding electroluminescence quantum 2.3 × 10-2 %, one order magnitude higher than based symmetric Y6 (4.4 10-3 %), thus significantly lowering nonradiative devices. Besides, multiple halogen fast hole transfer As result, OPVs PM6:BTP-S2 blend realize PCE 16.37%, (15.79%) PM6:Y6-based OPVs. A further optimization ternary (PM6:Y6:BTP-S2) results best 17.43%, which among highest efficiencies single-junction This work provides effective approach lower promote strategy.

Language: Английский

Citations

305
The principles, design and applications of fused-ring electron acceptors DOI
Jiayu Wang,

Peiyao Xue,

Yiting Jiang

et al.

Nature Reviews Chemistry, Journal Year: 2022, Volume and Issue: 6(9), P. 614 - 634

Published: Aug. 1, 2022

Language: Английский

Citations

298
Desired open-circuit voltage increase enables efficiencies approaching 19% in symmetric-asymmetric molecule ternary organic photovoltaics DOI Creative Commons
Lingling Zhan, Shuixing Li,

Yaokai Li

et al.

Joule, Journal Year: 2022, Volume and Issue: 6(3), P. 662 - 675

Published: Feb. 25, 2022

Language: Английский

Citations

293
A-DA′D-A non-fullerene acceptors for high-performance organic solar cells DOI
Qingya Wei, Wei Liu, Mario Leclerc

et al.

Science China Chemistry, Journal Year: 2020, Volume and Issue: 63(10), P. 1352 - 1366

Published: July 17, 2020

Language: Английский

Citations

266
Compromising Charge Generation and Recombination of Organic Photovoltaics with Mixed Diluent Strategy for Certified 19.4% Efficiency DOI
Tianyi Chen, Shuixing Li,

Yaokai Li

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(21)

Published: March 3, 2023

The ternary blend is demonstrated as an effective strategy to promote the device performance of organic photovoltaics (OPVs) due dilution effect. While compromise between charge generation and recombination remains a challenge. Here, mixed diluent for further improving efficiency OPV proposed. Specifically, high-performance system with polymer donor, i.e., PM6, nonfullerene acceptor (NFA), BTP-eC9, diluted by diluents, which involve high bandgap NFA BTP-S17 low BTP-S16 (similar that BTP-eC9). better miscibility BTP-eC9 can dramatically enhance open-circuit voltage (VOC ), while maximizes or short-circuit current density (JSC ). interplay BTP-17 enables recombination, thus leading 19.76% (certified 19.41%), best among single-junction OPVs. Further analysis on carrier dynamics validates efficacy diluents balancing be attributed more diverse energetic landscapes improved morphology. Therefore, this work provides commercialization.

Language: Английский

Citations

259
n-Type Molecular Photovoltaic Materials: Design Strategies and Device Applications DOI
Qihui Yue,

Wuyue Liu,

Xiaozhang Zhu

et al.

Journal of the American Chemical Society, Journal Year: 2020, Volume and Issue: 142(27), P. 11613 - 11628

Published: May 27, 2020

The use of photovoltaic technologies has been regarded as a promising approach for converting solar energy to electricity and mitigating the crisis, among these, organic photovoltaics (OPVs) have attracted broad interest because their solution processability, flexibility, light weight, potential large-area processing. development OPV materials, especially electron acceptors, one focuses in recent years. Compared with fullerene derivates, n-type non-fullerene molecules some unique merits, such synthetic simplicity, high tunability absorption levels, small loss. In last 5 years, cells based on achieved significant breakthrough power conversion efficiency from approximately 4% over 17%, which is superior those fullerene-based cells; meanwhile, created brand new opportunities application OPVs special situations. This Perspective analyzes key design strategies high-performance molecular materials highlights instructive examples various applications, including ternary tandem cells, high-efficiency semitransparent power-generating building facades windows, indoor driving low-power-consumption devices. Moreover, accelerate pace toward commercialization OPVs, existing challenges future directions are also reviewed perspectives efficiency, stability, fabrication.

Language: Английский

Citations

254
15.34% efficiency all-small-molecule organic solar cells with an improved fill factor enabled by a fullerene additive DOI
Dingqin Hu,

Qianguang Yang,

Haiyan Chen

et al.

Energy & Environmental Science, Journal Year: 2020, Volume and Issue: 13(7), P. 2134 - 2141

Published: Jan. 1, 2020

A fullerene additive adjusts the miscibility between donor and acceptor for morphology optimization reduces bimolecular recombination, assisting significant improvement of fill factor efficiency.

Language: Английский

Citations

245
Approaching 18% efficiency of ternary organic photovoltaics with wide bandgap polymer donor and well compatible Y6 : Y6-1O as acceptor DOI Creative Commons
Xiaoling Ma, An‐Ping Zeng, Jinhua Gao

et al.

National Science Review, Journal Year: 2020, Volume and Issue: 8(8)

Published: Dec. 29, 2020

A series of ternary organic photovoltaics (OPVs) are fabricated with one wide bandgap polymer D18-Cl as donor, and well compatible Y6 Y6-1O acceptor. The open-circuit-voltage (

Language: Английский

Citations

245
Over 19% Efficiency Organic Solar Cells by Regulating Multidimensional Intermolecular Interactions DOI
Chenyu Han, Jianxiao Wang, Shuai Zhang

et al.

Advanced Materials, Journal Year: 2022, Volume and Issue: 35(10)

Published: Dec. 16, 2022

Research on organic solar cells (OSCs) has progressed through material innovation and device engineering. However, well-known ubiquitous intermolecular interactions, particularly their synergistic effects, have received little attention. Herein, the complicated relationship between photovoltaic conversion multidimensional interactions in active layers is investigated. These are dually regulated by side-chain isomerization end-cap engineering of acceptors. The phenylalkyl featured acceptors (LA-series) exhibit stronger crystallinity with preferential face-on relative to alkylphenyl attached isomers (ITIC-series). In addition, PM6 LA-series moderate donor/acceptor compared those strongly interacting PM6/ITIC-series pairs, which helps enhance phase separation charge transport. Consequently, output efficiencies all LA series over 14%. Moreover, show appropriate compatibility, host/guest relationships BTP-eC9, thereby leading uniform well-organized "alloy-like" mixed phases. particular, highly crystalline LA23 further optimizes multiple ternary microstructures, results a high efficiency 19.12%. Thus, these highlight importance performance OSCs.

Language: Английский

Citations

244