A Steric Camphane-Functionalized Fused-Ring Electron Acceptor for Efficient Ternary Non-Fullerene Organic Solar Cells DOI
Wenlong Xu, Jie Fang, Dongdong Xia

et al.

ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: 7(22), P. 10662 - 10669

Published: Nov. 9, 2024

Functionalization of Y-type non-fullerene acceptors (Y-NFAs) with bulky units at the alkyl chains, terminal IC ends, or central cores has been an efficient route to boosting efficiency NFA-based organic solar cells (OSCs). Single-crystal structure analysis a powerful tool provide detailed information, such as bending conjugated backbone and packing formats molecules in solid, which can supply valuable insight into performance relation direct further molecular design new NFAs. However, growth high-quality single crystals NFAs groups is often challenging. Herein, we designed synthesized NFA, Norb-Y, decorated steric camphane unit on core through fused quinoxaline bridge. Norb-Y was successfully characterized by single-crystal analysis, revealing well-fined atomic intermolecular stacking format. Notably, displays better coplanarity small dihedral angle 18° between two groups. Moreover, three kinds π–π modes corresponding J-aggregation were identified, including end-to-end, arm-to-arm, tail-to-tail modes, all contributed segment from thiophene end. Meanwhile, H-aggregation associating suppressed units, drives assembly C–H···F H bonds instead. This kind significance for reducing voltage loss increasing OSCs' open circuit voltage, finally verified PM6:BTP-eC9:Norb-Y- D18:N3:Norb-Y-based ternary OSCs.

Language: Английский

Perhaloacylation of α-Carbonyl Sulfoxonium Ylides DOI
Varun Anand, Namrata Rastogi

The Journal of Organic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 2, 2025

A mild and efficient protocol for the perhaloacylation of α-carbonyl sulfoxonium ylides has been developed. The commercially available perfluoro- perchloroacid anhydrides were used as acylating agents in catalyst- additive-free reactions to access α-carbonyl-α'-perhaloacyl high yields. reaction offers a simple method prepare valuable polyfluorinated organosulfur molecules.

Language: Английский

Citations

0
Polynorbornenes Bearing Cyclic Fluoroalkyl Side Groups for Achieving High Glass Transition Temperature and Low Refractive Index DOI

Makoto Uno,

Masafumi Sugiyama,

Takashi Okazoe

et al.

Macromolecules, Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

Language: Английский

Citations

0
Conjugated π-Extension of Small Molecular Nonfullerene Acceptor for Efficient Ternary Organic Solar Cells with an Efficiency of 19.10% DOI
Cheng Luo, Dongdong Xia,

Jie Wu

et al.

Energy & Fuels, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 14, 2025

In this study, we have successfully incorporated a small molecular acceptor, Y-LC, with conjugated π-extension as secondary acceptor in the PM6:BTP-eC9-based organic photovoltaics. The performance of device was significantly promoted from 18.45% binary system PM6:BTP-eC9 to over 19% ternary minimal Y-LC loading. This enhancement can be attributed alloy-like structures acceptors and optimized active layer morphology, which leads improved hole electron mobilities, thereby suppressing charge recombination, finally resulting higher photocurrent solar cells. Furthermore, complementary absorption is observed PM6 BTP-eC9, broaden spectrum photoactive enable more photons sunlight absorbed. Additionally, facilitates efficient transfer donor by forming cascade energy levels between BTP-eC9. These advantages collectively contribute superior obtained work also highlights that adoption nonfullerene suitable π-extensions minor additive photovoltaics powerful approach for achieving state-of-the-art

Language: Английский

Citations

0
Asymmetric Alkyl Chain Engineering of Non-fullerene Acceptors for Efficient Organic Solar Cells DOI

Cong Zhen Qiao,

Qian Xie, Jie Fang

et al.

Chinese Journal of Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

Language: Английский

Citations

0
A Steric Camphane-Functionalized Fused-Ring Electron Acceptor for Efficient Ternary Non-Fullerene Organic Solar Cells DOI
Wenlong Xu, Jie Fang, Dongdong Xia

et al.

ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: 7(22), P. 10662 - 10669

Published: Nov. 9, 2024

Functionalization of Y-type non-fullerene acceptors (Y-NFAs) with bulky units at the alkyl chains, terminal IC ends, or central cores has been an efficient route to boosting efficiency NFA-based organic solar cells (OSCs). Single-crystal structure analysis a powerful tool provide detailed information, such as bending conjugated backbone and packing formats molecules in solid, which can supply valuable insight into performance relation direct further molecular design new NFAs. However, growth high-quality single crystals NFAs groups is often challenging. Herein, we designed synthesized NFA, Norb-Y, decorated steric camphane unit on core through fused quinoxaline bridge. Norb-Y was successfully characterized by single-crystal analysis, revealing well-fined atomic intermolecular stacking format. Notably, displays better coplanarity small dihedral angle 18° between two groups. Moreover, three kinds π–π modes corresponding J-aggregation were identified, including end-to-end, arm-to-arm, tail-to-tail modes, all contributed segment from thiophene end. Meanwhile, H-aggregation associating suppressed units, drives assembly C–H···F H bonds instead. This kind significance for reducing voltage loss increasing OSCs' open circuit voltage, finally verified PM6:BTP-eC9:Norb-Y- D18:N3:Norb-Y-based ternary OSCs.

Language: Английский

Citations

0