Triadic Halobenzene Processing Additive Combined Advantages of Both Solvent and Solid Types for Efficient and Stable Organic Solar Cells DOI
Jaeyeong Park, Seonghun Jeong, Zhe Sun

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 3, 2024

Solvent additives with a high boiling point (BP) and low vapor pressure (VP) have formed key handle for improving the performance of organic solar cells (OSCs). However, it is not always clear whether they remain in active-layer film after deposition, which can negatively affect reproducibility stability OSCs. In this study, an easily removable solvent additive (4-chloro-2-fluoroiodobenzene (CFIB)) BP VP introduced, behaving like volatile solid that be completely removed during device fabrication process. In-depth studies CFIB addition into D18-Cl donor N3 acceptor validate its dominant non-covalent intermolecular interactions through effective electrostatic interactions. Such phenomena improve charge dynamics kinetics by optimizing morphology, leading to enhanced D18-Cl:N3-based devices power conversion efficiency 18.54%. The CFIB-treated exhibits exceptional thermal (T80 lifetime = 120 h) at 85 °C compared CFIB-free device, because morphological robustness evolving no residual film. features combination advantages (easy application) (high volatility) additives, demonstrating great potential use commercial mass production

Language: Английский

19.7% efficiency binary organic solar cells achieved by selective core fluorination of nonfullerene electron acceptors DOI Creative Commons
Kerui Liu, Yuanyuan Jiang, Guangliu Ran

et al.

Joule, Journal Year: 2024, Volume and Issue: 8(3), P. 835 - 851

Published: Jan. 30, 2024

Language: Английский

Citations

152
1,5-Diiodocycloctane: a cyclane solvent additive that can extend the exciton diffusion length in thick film organic solar cells DOI

Fengbo Sun,

Xufan Zheng, Tianyu Hu

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(5), P. 1916 - 1930

Published: Jan. 1, 2024

The addition of cyclane 1,5-diiodocycloctane (DICO) provides critical roles in extending exciton diffusion length within active layer, consequently contributing to the improvement power conversion. efficiency thick film organic solar cells.

Language: Английский

Citations

55
Isomerized Green Solid Additive Engineering for Thermally Stable and Eco‐Friendly All‐Polymer Solar Cells with Approaching 19% Efficiency DOI Open Access
Bin Liu,

Wan Xu,

Ruijie Ma

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(49)

Published: Oct. 12, 2023

Laboratory-scale all-polymer solar cells (all-PSCs) have exhibited remarkable power conversion efficiencies (PCEs) exceeding 19%. However, the utilization of hazardous solvents and nonvolatile liquid additives poses challenges for eco-friendly commercialization, resulting in trade-off between device efficiency operation stability. Herein, an innovative approach based on isomerized solid additive engineering is proposed, employing volatile dithienothiophene (DTT) isomers to modulate intermolecular interactions facilitate molecular stacking within photoactive layers. Through elucidating underlying principles DTT-induced polymer assembly level, a PCE 18.72% achieved devices processed with environmentally benign solvents, ranking it among highest record values all-PSCs. Significantly, such superiorities DTT-isomerized strategy afford excellent compatibility large-area blade-coating techniques, offering promising pathway industrial-scale manufacturing Moreover, these demonstrate enhanced thermal stability extrapolated T80 lifetime 14 000 h, further bolstering their potential sustainable technological advancement.

Language: Английский

Citations

53
Alkoxythiophene‐Directed Fibrillization of Polymer Donor for Efficient Organic Solar Cells DOI
Chenhao Liu,

Yiwei Fu,

Jinpeng Zhou

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(6)

Published: Nov. 24, 2023

Abstract Realizing fibrillar molecular framework is highly encouraged in organic solar cells (OSCs) due to the merit of efficient charge carrier transport. This however mainly achieved via chemical structural design photovoltaic semiconductors. In this work, through utilization three alkoxythiophene additives, T‐2OMe, T‐OEH, and T‐2OEH, intermolecular interactions among a series BDT‐type polymer donors, i.e., PM6, D18, PBDB‐T, PTB7‐Th, are tuned self‐assemble into nanofibrils during solution casting. X‐ray technique dynamics simulation reveal that with (2‐ethylhexyl)oxy (─OEH) chains can attach on 2‐ethylhexyl (EH) these donors promote their self‐assembly 1D nanofibrils, neat films as well blends L8‐BO. By adapting construct pseudo‐bulk heterojunction (P‐BHJ) OSCs layer‐by‐layer deposition, generally improved device performance seen, power conversion efficiencies enhanced from 18.2% 19.2% (certified 18.96%) 17.9% 18.7% for PM6/L8‐BO D18/L8‐BO devices, respectively. work provides physical approach transport channels photovoltaics.

Language: Английский

Citations

43
Cyano-functionalized pyrazine: an electron-deficient unit as a solid additive enables binary organic solar cells with 19.67% efficiency DOI

Lijun Tu,

Hao Wang,

Weixu Duan

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(10), P. 3365 - 3374

Published: Jan. 1, 2024

A strong electron-deficient unit CNPz as a solid additive was developed in PTQ10/ m -BTP-PhC6 binary organic solar cells. high PCE of 19.67% achieved with significant increase the J SC and FF (81.8%).

Language: Английский

Citations

38
Defining Solid Additive's Pivotal Role on Morphology Regulation in Organic Solar Cells Produced by Layer‐by‐layer Deposition DOI Creative Commons
Weiwei Wu, Yongmin Luo, Top Archie Dela Peña

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(22)

Published: March 8, 2024

Abstract Herein, two emerging device optimization methods, solid additive and layer‐by‐layer (LBL) process, for organic solar cells (OSCs) are simultaneously studied. Through traditional blend cast recently proposed identical solvent LBL cast, BDCB (2‐monobromo‐1,3‐dichloro‐bezene), a benzene derivative, is used to improve the performance based on celebrity combination PM6:L8‐BO. The results reveal that finely optimized concentration in PM6 solution can push efficiency of 19.03% compared with only 18.12% while power conversion (PCE) changing trend determined by BDCB's ratio L8‐BO's precursor. morphology characterizations confirm there exists no significant stratification LBL‐processed devices, supported previously reported swelling‐intercalation‐phase separation (SIPS) model. Thereby, additive's 2D considered smart strategy tuning SIPS which various final states. This work not reports cutting‐edge binary OSCs, but also new insight deep understanding method‐based development.

Language: Английский

Citations

32
Oligothiophene Additive‐Assisted Morphology Control and Recombination Suppression Enable High‐Performance Organic Solar Cells DOI
Wenting Liang, Lu Chen, Zhibo Wang

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(11)

Published: Jan. 9, 2024

Abstract Tuning the morphology through processing additives represents one of most promising strategies to boost performance organic solar cells (OSCs). However, it remains unclear how oligothiophene‐based solid influence molecular packing and OSCs. Here, two namely 2T 4T, are introduced into state‐of‐the‐art PM6:Y6‐based OSCs understand they film formation process, nanoscale morphology, photovoltaic performance. It is found that additive can improve both donor polymer non‐fullerene acceptor, resulting in lower Urbach energy reduced loss. Furthermore, blend with treatment displays enhanced domain purity a more favorable distribution acceptor materials vertical direction, which enhance charge extraction efficiency while simultaneously suppressing recombination. Consequently, processed realize 18.1% for devices. general applicability demonstrated, an impressive 18.6% PM6:L8‐BO‐based achieved. These findings highlight uncomplicated oligothiophenes have excellent potential fine‐adjustment active layer crucial future development

Language: Английский

Citations

31
Polymer Donor with a Simple Skeleton and Minor Siloxane Decoration Enables 19% Efficiency of Organic Solar Cells DOI
Xing Chen,

Mingqing Chen,

Jiahao Liang

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(16)

Published: Jan. 18, 2024

Abstract Development of polymer donors with simple chemical structure and low cost is great importance for commercial application organic solar cells (OSCs). Here, side‐chain random copolymer PMQ‐Si605 a simply 6,7‐difluoro‐3‐methylquinoxaline‐thiophene backbone 5% siloxane decoration side chain synthesized in comparison its alternating PTQ11. Relative to molecular weight ( M n ) 28.3 kg mol −1 PTQ11, the minor beneficial achieving higher up 51.1 . In addition, can show stronger aggregation ability faster charge mobility as well more efficient exciton dissociation active layer revealed by femtosecond transient absorption spectroscopy. With L8‐BO‐F acceptor, based OSCs display power conversion efficiency (PCE) 18.08%, much than 16.21% PTQ11 devices. another acceptor BTP‐H2 optimize photovoltaic performance PMQ‐Si605, further elevated PCEs 18.50% 19.15% be achieved binary ternary OSCs, respectively. Furthermore, layers are suitable processing high humidity air, an important factor massive production OSCs. Therefore, on promising, affording high‐performing candidate.

Language: Английский

Citations

31
Over 19.2% efficiency of layer-by-layer organic photovoltaics enabled by a highly crystalline material as an energy donor and nucleating agent DOI

Hongyue Tian,

Yuheng Ni,

Wenqing Zhang

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(14), P. 5173 - 5182

Published: Jan. 1, 2024

By introducing highly crystalline material D18A into donor layer acting as energy and nucleating agent, an optimal PCE of 19.25% was achieved for PM1 : D18A/L8-BO based OPVs.

Language: Английский

Citations

30
Regulation of molecular orientation in organic solar cells DOI
Qiuju Liang,

Mingzhi Duan,

Ziqi Geng

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 488, P. 150783 - 150783

Published: March 28, 2024

Language: Английский

Citations

28