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

Machine Learning Assisted Bithiophene Based Donor Acceptor Selection to Design New Fluoresent Dyes for Photovoltaic Applications DOI
Sadaf Noreen, Sajjad Hussain Sumrra, Abrar U. Hassan

et al.

Journal of Fluorescence, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 11, 2025

Language: Английский

Citations

2
Fluoroalkylated Non-fullerene Acceptor as Surface Segregated Monolayer for Controlling Molecular Orientation of Acceptor Layer in Organic Photovoltaics DOI
Takaho Yokoyama, Keisuke Tajima

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

Published: Jan. 26, 2025

A fluoroalkyl-containing electron acceptor (Y-SSM) is designed and synthesized to control the orientation of benchmark non-fullerene Y6 in thin films. Due low surface energy two fluoroalkyl chains at terminal part Y-SSM, it spontaneously segregates film during spin coating, forming a monolayer edge-on oriented Y-SSM. The Y-SSM leads crystallization underlying induce standing-up bulk films, which strikingly different from pure films that tend be face-on orientation. Solid evidence for provided by two-dimensional grazing incidence wide-angle X-ray scattering optical anisotropy measurements based on variable angle spectroscopic ellipsometry. can partially removed washing with hexane without disrupting Y6, resulting exposure surface. Organic photovoltaics planar heterojunction structure show significant increase short-circuit current density, reaching 2.5 times value compared due improved charge generation efficiency relative respect PM6.

Language: Английский

Citations

1
Green-Solvent-Processed All-Polymer Solar Cells with Enhanced Efficiency and Stability through Molecular Design and Side-Chain Engineering DOI

Changhao Xiang,

Jiaxun Peng,

Danyang Wu

et al.

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

Published: March 12, 2025

Green-solvent-processed all-polymer solar cells (AP-SCs) are regarded as an excellent candidate for renewable energy due to their better stability and eco-friendly features. Two polymers, PYF-U PYF-BO, have been designed by introducing a Y-series derivative with difluoro-substituted dicyanindenone units difluorobenzotriazole the first second electron-deficient (A) units, respectively. The introduction of two additional F atoms on leads more coplanar backbone because noncovalent interactions. Compared polymer undecyl chains thiophene, PYF-BO 2-butyloctyl exhibits stronger intermolecular aggregation during film-forming process, dominant face-on molecular packing, higher crystallinity in films. Therefore, PM6:PYF-BO AP-SC achieves efficiency 15.38%, outperforming that PM6:PYF-U device (14.27%). Moreover, former longer T80 lifetime (1789 h) than latter (826 under thermal aging at 65 °C packing morphology. Our research demonstrates combining interactions enhance coplanarity polymeric side-chain engineering optimize blend-film morphology is one efficient strategies developing high-performance acceptors.

Language: Английский

Citations

0
Ternary Blend Organic Photovoltaics with High Efficiency and Stability Through Energy Transfer and Molecular Packing Induced by an A‐D‐A Small Molecule DOI Creative Commons
Bin Chang,

Chung‐Hao Chen,

Atsushi Yabushita

et al.

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

Published: April 21, 2025

Abstract A novel A‐D‐A type small molecule (DTP‐2EH‐IO2Cl) incorporating dithiophenepyrrole (DTP) core with indene‐dione (IO2Cl) side chain an intermediate band gap and rigid structure is incorporated into polymer donor PM6 one of the three A−DA′D−A acceptor—L8‐BO, BTP‐eC9 or Y6—for ternary‐blend organic photovoltaics (OPVs). The third component DTP‐2EH‐IO2Cl induces not only energy transfer but also stronger molecular packing acceptors, resulting in a larger coherence length enhanced absorption that enhances devices’ power conversion efficiencies (PCE) thermal stability. PCE values champion devices PM6:L8‐BO, PM6:BTP‐eC9, PM6:Y6 are 19.2, 18.3, 17.6%, respectively, versus 16.5, 15.8, 15.4% for their corresponding binary blend devices, displaying relative increases from 14 to 16%. stability (T 80 ) PM6:L8‐BO: ternary device dramatically 568 h 57 PM6:L8‐BO device. These enhancements can be attributed effectiveness as increasing light through inducing intermolecular providing effective way tune morphology boost both OPVs.

Language: Английский

Citations

0
Tailoring selenium alkyl chain-containing small molecule donor enables efficient ternary solar cells with reduced charge recombination DOI

Gengsui Tian,

Yao Chen,

Dingqin Hu

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 513, P. 163009 - 163009

Published: April 23, 2025

Language: Английский

Citations

0
Lowering Toxicity of Solvent in Organic Solar Cells Manufacturing for 20% Efficiency DOI

Rui Zeng,

Qianqian Zhang, Wenkai Zhong

et al.

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

Published: April 23, 2025

Abstract Thin film organic photovoltaics (OPVs) aim to harness solar energy environmentally friendly, highly efficient, and cost‐effective means, thereby offering a sustainable solution for production ecological preservation. Efforts are undertook optimize engineering preparation technology OPV devices mini‐modules, through the development of low‐ecological‐impact solvent processing method. A newly developed strategy employing benign o ‐xylene (OXY) with synergistic dual additives (DIM DIB) achieved an optimal power conversion efficiency (PCE) 20.0% ( J SC 26.6 mA cm −2 , V OC 0.935 V, FF 80.3%) alongside exceptional stability metrics (82%–1500h). The mini‐module processed optimized TCE:OXY (1:3 v/v) demonstrated scalable performance reaching 17.6% (18.4 2 ), representing highest in safe based OPVs. Suitable microscale patterns contributed broader range receiving angles, enabling more flexible installation geometries building‐integrated applications.

Language: Английский

Citations

0
Organic Solar Cell with Efficiency of 20.49% Enabled by Solid Additive and Non‐Halogenated Solvent DOI
Longfei Liu, Hui Li,

Juxuan Xie

et al.

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

Published: April 26, 2025

Abstract Recently, benzene‐based solid additives (BSAs) have emerged as pivotal components in modulating the morphology of blend film organic solar cells (OSCs). However, since almost all substituents on BSAs are weak electron‐withdrawing groups and contain halogen atoms, study with non‐halogenated strong has received little attention. Herein, an additive strategy is proposed, involving incorporation benzene ring. An effective BSA, 4‐nitro‐benzonitrile (NBN), selected to boost efficiency devices. The results demonstrate that NBN‐treated device exhibits enhanced light absorption, superior charge transport performance, mitigated recombination, more optimal compared additive‐free OSC. Consequently, D18:BTP‐eC9+NBN‐based binary D18:L8‐BO:BTP‐eC9+NBN‐based ternary OSC processed by solvent achieved outstanding efficiencies 20.22% 20.49%, respectively. Furthermore, universality NBN also confirmed different active layer systems. In conclusion, this work demonstrates introduction electron‐absorbing moieties ring a promising approach design BSAs, which can tune achieve highly efficient devices, certain guiding significance for development BSAs.

Language: Английский

Citations

0
Dual-asymmetric backbone constructed polymerized small molecule acceptors for efficient all-polymer solar cells DOI

Wenyan Su,

Tao Sun,

Guangyu Qi

et al.

Journal of Materials Chemistry A, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Dual-asymmetric polymer acceptors with finely-tailored molecular energy levels, crystallinity, and packing are developed for the first time, achieving an efficiency of 17.28% in all-polymer solar cells.

Language: Английский

Citations

0
Brominated isomerization engineering of 1-chloronaphthalene derived solid additives enables 19.68% efficiency organic solar cells DOI

Han Liu,

Hairui Bai,

Yibo Zhou

et al.

Materials Science and Engineering R Reports, Journal Year: 2024, Volume and Issue: 162, P. 100879 - 100879

Published: Nov. 18, 2024

Language: Английский

Citations

2
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