Rational Regulation of Layer‐by‐Layer Processed Active Layer via Trimer‐Induced Pre‐Swelling Strategy for Efficient and Robust Thick‐Film Organic Solar Cells DOI

Shenzheng Gao,

Shanlei Xu,

Cheng Sun

et al.

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

Published: May 8, 2025

Abstract Thick‐film (>300 nm) organic solar cells (OSCs) have garnered intensifying attention due to their compatibility with commercial roll‐to‐roll printing technology for the large‐scale continuous fabrication process. However, uncontrollable donor/acceptor (D/A) arrangement in thick‐film condition, restricted exciton splitting and severe carrier traps significantly impede photovoltaic performance operability. Herein, combined layer‐by‐layer deposition technology, a twisted 3D star‐shaped trimer (BTT‐Out) is synthesized develop trimer‐induced pre‐swelling (TIP) strategy, where BTT‐Out incorporated into buried D18 donor layer enable of OSCs. The integrated approach characterizations reveal that exceptional configuration spontaneous self‐organization behavior could pre‐swell network facilitate acceptor's infiltration accelerate formation D/A interfaces. This enhancement triggers elevated polarons amplified hole‐transfer kinetics, which essential augmented efficiency. Furthermore, regulated swelling process can initiate favorable self‐assembly L8‐BO acceptors, would ameliorate transport channels mitigate traps. As result, TIP‐modified thin‐film OSC devices achieve champion 20.3% (thin‐film) 18.8% (thick‐film) upgraded stability, among one highest performances reported

Language: Английский

Efficient and stable high-entropy organic photovoltaics DOI
Ming Zhang, Lei Zhu,

Jun Yan

et al.

Joule, Journal Year: 2025, Volume and Issue: unknown, P. 101851 - 101851

Published: March 1, 2025

Language: Английский

Citations

2
Dimerized small-molecule acceptors with electron withdrawing linker for efficient organic solar cells DOI

Jianan Niu,

Mingxin Sun,

Fuzhen Bi

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160416 - 160416

Published: Feb. 1, 2025

Language: Английский

Citations

1
Deuteration solid additive strategy for high-performance and thermally robust organic solar cells DOI
Bowen Li, Xia Hao, Ruijie Ma

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162655 - 162655

Published: April 1, 2025

Language: Английский

Citations

0
Rationalizing Star‐Shaped Nonfullerene Acceptors in Ternary Organic Solar Cells: Morphology Mediation Facilitates Exciton and Carrier Dynamics DOI
Zhiyuan Wu, Weiyi Wang, Hui Qian

et al.

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

Published: May 7, 2025

Abstract Star‐shaped trimeric acceptors have garnered increasing attention in organic solar cells (OSCs), yet a mechanistic gap exists on regulation of morphology and carrier dynamics. Herein, nonfullerene acceptor named BTF‐Trimer bearing benzotrifuran core with more electronegative oxygen atoms is newly designed, which fosters intermolecular interactions both polymer donors small‐molecule acceptors. possesses reduced aggregation tendencies high glass transition temperature, are conducive to inhibiting excessive phases stabilizing film morphology, respectively. Notably, as mediator strengthened host donor‐acceptor compatibility ternary blend active layers, forming dual‐fibril interpenetrating networks that promoted exciton dissociation hole transfer well alleviated bimolecular recombination devices. Consequently, the power conversion efficiency T 70 (the time required reach 70% initial efficiency) lifetime OSCs an Ar atmosphere achieved 19.13% ≈2800 h, This study highlights distinctive merits star‐shaped suppress over‐crystallization enhance phase continuity, offering insights into interplay phase‐separated dynamics, plays critical role

Language: Английский

Citations

0
Rational Regulation of Layer‐by‐Layer Processed Active Layer via Trimer‐Induced Pre‐Swelling Strategy for Efficient and Robust Thick‐Film Organic Solar Cells DOI

Shenzheng Gao,

Shanlei Xu,

Cheng Sun

et al.

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

Published: May 8, 2025

Abstract Thick‐film (>300 nm) organic solar cells (OSCs) have garnered intensifying attention due to their compatibility with commercial roll‐to‐roll printing technology for the large‐scale continuous fabrication process. However, uncontrollable donor/acceptor (D/A) arrangement in thick‐film condition, restricted exciton splitting and severe carrier traps significantly impede photovoltaic performance operability. Herein, combined layer‐by‐layer deposition technology, a twisted 3D star‐shaped trimer (BTT‐Out) is synthesized develop trimer‐induced pre‐swelling (TIP) strategy, where BTT‐Out incorporated into buried D18 donor layer enable of OSCs. The integrated approach characterizations reveal that exceptional configuration spontaneous self‐organization behavior could pre‐swell network facilitate acceptor's infiltration accelerate formation D/A interfaces. This enhancement triggers elevated polarons amplified hole‐transfer kinetics, which essential augmented efficiency. Furthermore, regulated swelling process can initiate favorable self‐assembly L8‐BO acceptors, would ameliorate transport channels mitigate traps. As result, TIP‐modified thin‐film OSC devices achieve champion 20.3% (thin‐film) 18.8% (thick‐film) upgraded stability, among one highest performances reported

Language: Английский

Citations

0