Thienyltriazine Triamides: Thickness Insensitive Interlayer Materials Featuring Fine‐Tuned Optoelectronic and Aggregation Characters for Efficient Organic Solar Cells DOI
Wenxu Liu,

Junjie Wen,

Haicheng Yu

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 137(1)

Published: Aug. 17, 2024

Abstract A novel class of thienyltriazine triamides (TTTAs) was facile synthesized and firstly used as cathode interlayers (CILs) for organic solar cells (OSCs). By utilizing different aromatic arms pendant polar groups, their optoelectronic properties aggregation behaviors were effectively modulated. The combination (TT) core, naphthylamide arm imidazole group endows TT−N−M with suitable energy levels, intensified work function tunability, higher conductivity, well‐balanced crystallinity film‐forming ability, boosting both the performance stability OSCs significantly. Remarkably, cell efficiency remains stable at around 90 % optimal even interlayer thickness varied from 5 to 95 nm, demonstrating its insensitivity thickness. Moreover, exhibits compatibility various active layer systems, achieving a maximum 19.60 single‐junction cell. Its exceptional tolerance fluctuations establishes new benchmark multi‐armed CIL‐based OSCs, also positioning them among most high‐performing CIL materials documented thus far. This not only broadens scope but offers deep insights into design strategies structure‐properties relationships, being beneficial future development more efficient applications.

Language: Английский

High‐Performance Aqueous Zinc‐Organic Battery with a Photo‐Responsive Covalent Organic Framework Cathode DOI
Shoucheng Wang, Congcong Zhu,

Jiale Ji

et al.

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

Published: July 2, 2024

Abstract Covalent organic framework (COF) materials, known for their robust porous character, sustainability, and abundance, have great potential as cathodes aqueous Zn‐ion batteries (ZIBs). However, application is hindered by low reversible capacity discharge voltage. Herein, a donor–acceptor configuration COF (NT‐COF) utilized the cathode ZIBs. The cell exhibits high voltage plateau of ≈1.4 V 214 mAh g −1 at 0.2 A when utilizing Mn 2+ electrolyte additive in ZnSO 4 electrolyte. synergistic combination mechanism proposed, involving deposition/dissolution reactions Zn SO (OH) 6 ·4H 2 O co‐(de)insertion H + 2− NT‐COF. Meanwhile, NT‐COF with facilitates efficient generation separation electron‐hole pairs upon light exposure, thereby enhancing electrochemical within battery. This leads to reduction charging internal overvoltage, ultimately minimizing electricity consumption. Under ambient weather conditions, an average 430 on sunny days maintains consistent cycling stability duration 200 cycles (≈19 days) . research inspires advancement Zn‐organic high‐energy‐density energy storage systems or photo‐electrochemical batteries.

Language: Английский

Citations

8
Thienyltriazine Triamides: Thickness Insensitive Interlayer Materials Featuring Fine‐Tuned Optoelectronic and Aggregation Characters for Efficient Organic Solar Cells DOI
Wenxu Liu,

Junjie Wen,

Haicheng Yu

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 64(1)

Published: Aug. 17, 2024

A novel class of thienyltriazine triamides (TTTAs) was facile synthesized and firstly used as cathode interlayers (CILs) for organic solar cells (OSCs). By utilizing different aromatic arms pendant polar groups, their optoelectronic properties aggregation behaviors were effectively modulated. The combination (TT) core, naphthylamide arm imidazole group endows TT-N-M with suitable energy levels, intensified work function tunability, higher conductivity, well-balanced crystallinity film-forming ability, boosting both the performance stability OSCs significantly. Remarkably, cell efficiency remains stable at around 90 % optimal even interlayer thickness varied from 5 to 95 nm, demonstrating its insensitivity thickness. Moreover, exhibits compatibility various active layer systems, achieving a maximum 19.60 single-junction cell. Its exceptional tolerance fluctuations establishes new benchmark multi-armed CIL-based OSCs, also positioning them among most high-performing CIL materials documented thus far. This not only broadens scope but offers deep insights into design strategies structure-properties relationships, being beneficial future development more efficient applications.

Language: Английский

Citations

5
An Arginine-Doped Cathode Interlayer Enables Enhanced Efficiency in Organic Solar Cells DOI

Yuanjian Chen,

Zhengli Zhang, Ruirui Cui

et al.

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

Published: Jan. 15, 2025

The appearance of the cathode interlayer (CIL), a transition bridge between and organic photoactive layer (OPL), provides new pathway for performance improvement solar cells (OSCs). PFN-Br is widely employed in many optoelectronic devices, including nonfullerene OSCs, to transport electrons improve charge injection at interface. However, due relatively low conductivity PFN-Br, thickness CIL prepared with usually less than 10 nm, which evidently contradicts requirements large-scale roll-to-roll manufacturing. Herein, strategy using N-α-carbobenzyloxy-d-Arginine (NA) as doping material proposed PFN-Br. homogeneous distribution NA can modify work function (WF) facilitate an interface dipole arrangement that favorable transfer, resulting binary CILs tunable WF increased conductivity. To verify this method, series devices were PBDB-T:IT-M or PM6:Y6 OPL different proportions CIL. use PFN-Br:NA (0.75:0.06, weight%) helps morphology, making it exhibit trend fiber network structure, leading higher fill factor short circuit current density. Consequently, optimal power conversion efficiency (PCE) based on from 10.5% 11.1% 15.4% 16.0%, respectively. In addition, NA-doped device exhibits better nitrogen stability after 360 h dark storage compared control. discovery these modification approaches insight into hybrid interlayers required efficient reliable OSCs.

Language: Английский

Citations

0
Non-conjugated polymer as printable electron transport layer for efficient and stable organic photovoltaic cells DOI

Hao Hou,

Qian Kang, Yafei Wang

et al.

Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

Citations

0
Enhancing the Built‐in Electric Field of Thickness‐Insensitive Small Molecule Cathode Interlayers for High‐Efficiency and Stable Organic Solar Cells DOI
Yuxing Wang,

Junjie Wen,

Zhe Shang

et al.

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: April 28, 2025

The built-in electric field (BEF) is proposed as a critical design parameter for optimizing small-molecule cathode interlayer materials (SM-CIMs) in organic solar cells (OSCs). By strategically transforming imidazole-functionalized triads from donor-acceptor-donor (D-A-D) to an A-D-A configuration and replacing the A unit with more electron-deficient moiety, we developed three triads: (TBT)2NDI, (NDI)2TBT, (PDI)2TBT, each exhibiting progressively enhanced BEF, along improved conductivity, work function (WF) adjustability, energy level alignment, crystallinity. Additionally, facilitate superior electronic communication both non-fullerene acceptors (NFAs) polymer donors, enhancing photoexcitation utilization reducing triplet state formation. Consequently, transitioning (TBT)2NDI (NDI)2TBT then (PDI)2TBT significantly boosts OSC efficiency operational stability. Notably, devices retain 85.0% 82.3% of their peak efficiencies, respectively, far exceeding (TBT)2NDI-based device (65.9%) at thickness approximately 105 nm. Furthermore, exhibits excellent compatibility various active layers, outstanding performance 20.10% recorded PM6:L8-BO:BTP-eC9 system. This comprehensive study, encompassing molecular design, theoretical simulation, fabrication, fundamental physics, highlights importance strategic donor-acceptor (D-A) framework modifications enhance thereby advancing development sophisticated SM-CIMs OSCs.

Language: Английский

Citations

0
Enhancing the Built‐in Electric Field of Thickness‐Insensitive Small Molecule Cathode Interlayers for High‐Efficiency and Stable Organic Solar Cells DOI
Yuxing Wang,

Junjie Wen,

Zhe Shang

et al.

Angewandte Chemie, Journal Year: 2025, Volume and Issue: unknown

Published: April 28, 2025

Abstract The built‐in electric field (BEF) is proposed as a critical design parameter for optimizing small‐molecule cathode interlayer materials (SM‐CIMs) in organic solar cells (OSCs). By strategically transforming imidazole‐functionalized triads from donor‐acceptor‐donor (D‐A‐D) to an A‐D‐A configuration and replacing the A unit with more electron‐deficient moiety, we developed three triads: (TBT) 2 NDI, (NDI) TBT, (PDI) each exhibiting progressively enhanced BEF, along improved conductivity, work function (WF) adjustability, energy level alignment, crystallinity. Additionally, facilitate superior electronic communication both non‐fullerene acceptors (NFAs) polymer donors, enhancing photoexcitation utilization reducing triplet state formation. Consequently, transitioning NDI TBT then significantly boosts OSC efficiency operational stability. Notably, devices retain 85.0% 82.3% of their peak efficiencies, respectively, far exceeding NDI‐based device (65.9%) at thickness approximately 105 nm. Furthermore, exhibits excellent compatibility various active layers, outstanding performance 20.10% recorded PM6:L8‐BO:BTP‐eC9 system. This comprehensive study, encompassing molecular design, theoretical simulation, fabrication, fundamental physics, highlights importance strategic donor–acceptor (D‐A) framework modifications enhance thereby advancing development sophisticated SM‐CIMs OSCs.

Language: Английский

Citations

0
Small molecule perylene diimide derivatives with different bay site modifications as cathode interface layers for organic solar cells DOI

Yanyan Wang,

Dan Zhou,

Senmei Lan

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 496, P. 154206 - 154206

Published: July 22, 2024

Language: Английский

Citations

2
Thienyltriazine Triamides: Thickness Insensitive Interlayer Materials Featuring Fine‐Tuned Optoelectronic and Aggregation Characters for Efficient Organic Solar Cells DOI
Wenxu Liu,

Junjie Wen,

Haicheng Yu

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 137(1)

Published: Aug. 17, 2024

Abstract A novel class of thienyltriazine triamides (TTTAs) was facile synthesized and firstly used as cathode interlayers (CILs) for organic solar cells (OSCs). By utilizing different aromatic arms pendant polar groups, their optoelectronic properties aggregation behaviors were effectively modulated. The combination (TT) core, naphthylamide arm imidazole group endows TT−N−M with suitable energy levels, intensified work function tunability, higher conductivity, well‐balanced crystallinity film‐forming ability, boosting both the performance stability OSCs significantly. Remarkably, cell efficiency remains stable at around 90 % optimal even interlayer thickness varied from 5 to 95 nm, demonstrating its insensitivity thickness. Moreover, exhibits compatibility various active layer systems, achieving a maximum 19.60 single‐junction cell. Its exceptional tolerance fluctuations establishes new benchmark multi‐armed CIL‐based OSCs, also positioning them among most high‐performing CIL materials documented thus far. This not only broadens scope but offers deep insights into design strategies structure‐properties relationships, being beneficial future development more efficient applications.

Language: Английский

Citations

0