Selenization Strategy of Phenazine‐based Non‐Fullerene Acceptors Promotes Photon Harvesting and Reduces Voltage Loss in Organic Solar Cells DOI

Xiyun Li,

Ruixiang Peng,

Yi Qiu

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 26, 2024

Abstract Phenazine‐based small molecular acceptors (SMAs), which benefit from the reduced energy loss ( E ), have emerged as promising candidates for achieving high‐efficiency organic solar cells (OSCs). Nevertheless, potential advancements of phenazine‐based photovoltaic devices are hindered by constrained short‐circuit current J sc ). Though incorporation selenium (Se) atoms has been proven effective in enhancing , it simultaneously introduces disorder stacking and charge recombination. Based on desire to harness full phenazine structure benefits Se substitution, a series Se‐substituted SMAs, namely PzIC‐SSe‐4F PzIC‐SeSe‐4F meticulously synthesized. Due increased photon harvesting capabilities, device using demonstrated significantly 27.73 mA cm −2 . Remarkably, PzIC‐SeSe‐4F‐based displayed an astonishing open circuit voltage V oc ) 0.873 V, representing highest recorded among all reported symmetric Y‐series SMAs‐based devices. Thanks synergistic effect central cores PM6:PzIC‐SeSe‐4F‐based achieves power conversion efficiency (PCE) 17.69%. The findings serve pivotal reference further development

Language: Английский

The Development of Quinoxaline‐Based Electron Acceptors for High Performance Organic Solar Cells DOI
Hongxing Liu, Yanfang Geng, Zuo Xiao

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(33)

Published: June 19, 2024

In the recent advances of organic solar cells (OSCs), quinoxaline (Qx)-based nonfullerene acceptors (QxNFAs) have attracted lots attention and enabled recorded power conversion efficiency approaching 20%. As an excellent electron-withdrawing unit, Qx possesses advantages many modifiable sites, wide absorption range, low reorganization energy, so on. To develop promising QxNFAs to further enhance photovoltaic performance OSCs, it is necessary systematically summarize reported far. this review, all focused are classified into five categories as following: SM-Qx, YQx, fused-YQx, giant-YQx, polymer-Qx according molecular skeletons. The design concepts, relationships between structure optoelectronic properties, intrinsic mechanisms device discussed in detail. At end, kind materials summed up, direction prospected, challenges faced by given, constructive solutions existing problems advised. Overall, review presents unique viewpoints conquer challenge thus boost OSCs development toward commercial applications.

Language: Английский

Citations

33
Quinoxaline-based nonfullerene acceptors with powerful core-functionalization ability enabling efficient solar energy utilization DOI
Kerui Liu, Yuanyuan Jiang,

Feng Liu

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(14), P. 4944 - 4967

Published: Jan. 1, 2024

Quinoxaline-based nonfullerene acceptors show highly tunable photoelectric properties and superior performance for sunlight utilization enabled by their powerful core-functionalization ability.

Language: Английский

Citations

17
Halogenation Engineering of Solid Additives Enables 19.39% Efficiency and Stable Binary Organic Solar Cells via Manipulating Molecular Stacking and Aggregation of Both Donor and Acceptor Components DOI

Wenyan Su,

Xuming Zhou,

Qiang Wu

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 3, 2024

Abstract By selectively interacting with acceptor components, various typed solid additives achieve boosted power conversion efficiency (PCE) in organic solar cells (OSCs). However, due to the efficient active layer being composed of donor and materials, it is difficult obtain desired morphology by manipulating component alone, limiting further improvement PCEs. Herein, two a same backbone thiophene‐benzene‐thiophene (halogen‐free D1‐H) but different halogen substituents (fluorinated D1‐F chlorinated D1‐Cl) are developed probe working mechanism halogenated variation OSCs. Unlike D1‐H continuous charge distributions, D1‐Cl show isolated positive distribution benzene‐core negative thiophene, offering stronger non‐covalent interactions both (PM6) (L8‐BO), especially D1‐Cl. Consequently, D1‐Cl‐treated obtains an optimized phase separation improved molecular packing, boosting PCE 18.59% device stability OSCs, 17.62% for D1‐H‐treated counterparts. Moreover, using D18:L8‐BO D18:BTP‐eC9 as layers, binary OSCs impressive PCEs 19.29% 19.39%, respectively. This work indicates that halogenation engineering can effectively regulate improving elucidates underlying mechanism.

Language: Английский

Citations

10
Enhancing Organic Solar Cell Efficiency with Ester-Based Quinoxaline Non-Fullerene Acceptors in Ternary Blends DOI
Zhixin Liu,

Chunguang Zhu,

Jianpeng Xu

et al.

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110801 - 110801

Published: Feb. 1, 2025

Language: Английский

Citations

1
Optimizing non-fullerene acceptor molecules constituting fluorene core for enhanced performance in organic solar cells: a theoretical methodology DOI
Walid Taouali, K. Alimi

Journal of Molecular Modeling, Journal Year: 2024, Volume and Issue: 30(10)

Published: Sept. 19, 2024

Language: Английский

Citations

5
Utilizing Zinc Oxide and Fluorescent Agent as a Versatile Electron Transport Layer for Highly Efficient and Stable Inverted Polymer Solar Cells DOI
Jin-Xiang Chen, Meng Wang, Ping Cai

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: May 13, 2025

The development of excellent electron transport layers (ETLs) is crucial for high-performance organic solar cells (OSCs). In this work, we have developed a novel, versatile ETL composed zinc oxide (ZnO) and fluorescent agent to enhance the photovoltaic performance photostability OSCs. Unlike bulk doping ZnO interlayer, use conjugated small-molecule agent, sodium 2,2'-([1,1'-biphenyl]-4,4'-diyldivinylene)-bis(benzenesulfonate) (CBS), modify surface thus construct ZnO/CBS bilayer structure. shows lower work function, which beneficial extraction. Moreover, photoinduced transfer from CBS increases conductivity ZnO. Notably, fluorescence generated by can also be quenched active layer, indicating existence exciton or charge between layer. bidirectional layer synergistically improves enhances performance. Consequently, PM6:eC9 PM6:L8-BO based OSCs with as achieve power conversion efficiencies 17.42 18.16%, respectively, are among highest levels in inverted thickness insensitivity PM6:eC9-based still exhibit high PCE 15.66% at thick-film 130 nm 20 CBS. addition, modification efficiently blocks ultraviolet light reduces catalytic activity thereby enhancing

Language: Английский

Citations

0
Cyanobenzene‐Modified Quinoxaline‐Based Acceptors with Optimal Excitonic Behavior Enable Efficient Organic Solar Cells DOI

Xinya Ran,

Chi Zhang,

Dingding Qiu

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 22, 2025

Abstract Cyanogroup (‐CN) is a strongly electron‐withdrawing and highly polar functional group; therefore, cyanation has been extensively utilized to optimize the terminal groups of high‐performance small‐molecule acceptors (SMAs) in organic solar cells (OSCs). Herein, by regulating cyanobenzene substitution central core for first time, four novel SMAs are synthesized, named phCN‐F, phCN‐Cl, 2phCN‐F, 2phCN‐Cl. Theoretical experimental analyses have shown that asymmetric symmetric cyanobenzene‐substitution core, coupled with selective groups, can significantly affect intrinsic excitonic properties molecule. Blends based on molecules possess tighter molecular packing more suitable phase separation facilitate exciton dissociation, charge transport, extraction. The optimal device performance phCN‐F‐based OSC reaches 20.16%, which higher than symmetrically substituted OSCs. Furthermore, devices prepared phCN‐F maintain over 90% their initial efficiency after being heated at 85°C 3000 h, demonstrating excellent thermal stability. This study elucidates potential mechanisms optimizing through providing valuable insights further design record‐breaking SMAs.

Language: Английский

Citations

0
Fluorination of central cores and end groups in non-fullerene acceptors for efficient organic solar cells DOI
Yaxin Zhai, Yanan Shi,

Kaiming Yang

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 164193 - 164193

Published: May 1, 2025

Language: Английский

Citations

0
Selenization Strategy of Phenazine‐based Non‐Fullerene Acceptors Promotes Photon Harvesting and Reduces Voltage Loss in Organic Solar Cells DOI

Xiyun Li,

Ruixiang Peng,

Yi Qiu

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 26, 2024

Abstract Phenazine‐based small molecular acceptors (SMAs), which benefit from the reduced energy loss ( E ), have emerged as promising candidates for achieving high‐efficiency organic solar cells (OSCs). Nevertheless, potential advancements of phenazine‐based photovoltaic devices are hindered by constrained short‐circuit current J sc ). Though incorporation selenium (Se) atoms has been proven effective in enhancing , it simultaneously introduces disorder stacking and charge recombination. Based on desire to harness full phenazine structure benefits Se substitution, a series Se‐substituted SMAs, namely PzIC‐SSe‐4F PzIC‐SeSe‐4F meticulously synthesized. Due increased photon harvesting capabilities, device using demonstrated significantly 27.73 mA cm −2 . Remarkably, PzIC‐SeSe‐4F‐based displayed an astonishing open circuit voltage V oc ) 0.873 V, representing highest recorded among all reported symmetric Y‐series SMAs‐based devices. Thanks synergistic effect central cores PM6:PzIC‐SeSe‐4F‐based achieves power conversion efficiency (PCE) 17.69%. The findings serve pivotal reference further development

Language: Английский

Citations

2