Results 71 to 80 of about 1,849 (205)

Carbonyl lock enables multi‐resonant organoboron framework with substantially enhanced spin‐flip and reduced emission bandwidth

FlexMat, EarlyView.
Integrating carbonyl lock onto multi‐resonant organoboron emitters is found to go beyond conventional bridge unit. It can not only suppress the molecular relaxation as conventional bridge, but also substantially affect electronic engineering via carbonyl integration, activating multiple up‐conversion channels, thus leading to an accelerated spin‐flip ...
Tingfeng Chen, Xin Xiong, Rajat Walia, Xiaochun Fan, Wei Liu, Xiankai Chen, Jia Yu, Kai Wang   +7 more
wiley   +1 more source

Highly efficient blue crystalline organic light‐emitting diodes enabled by a hot exciton sensitizer PyPO

FlexMat, EarlyView.
Two different sensitization structures (hot exciton sensitizer type and exciton nanoaggregate type) were integrated into crystalline host matrix. The resulting crystalline organic light‐emitting diodes exhibit low Joule heat loss ratio and high photon output.
Hao Hu, Bo Yu, Ping Lu, Feng Zhu, Donghang Yan   +4 more
wiley   +1 more source

Deep red to near‐infrared thermally activated delayed fluorescence conjugated polymers toward highly efficient solution‐processible deep red and near‐infrared organic light‐emitting diodes

FlexMat, EarlyView.
A series of deep red (DR) and near‐infrared (NIR) thermally activated delayed fluorescence conjugated polymers are prepared, their solution‐processible organic light‐emitting diodes exhibit DR emission with maximum external quantum efficiency (EQEmax) of 6.4%, high luminance of 4254 cd m−2 and emission peak at 678 nm, and a NIR device with EQEmax of 2 ...
Tao Wang, Hongyang Zhang, Liping Jin, Peng Tao, Yanxiang Cheng, Wai‐Yeung Wong   +5 more
wiley   +1 more source

Flexible plasma‐sintered transparent conducting electrodes fabricated from particle free gold inks

FlexMat, EarlyView.
Thin gold electrodes fabricated via particle free metal organic decomposition inks provide a promising alternative to indium tin oxide for flexible devices. Low temperature plasma sintering enables compatibility with polymer substrates while maintaining transparency and sufficient electrical conductivity for optoelectronic applications.
Michael Hengge, Felix Hermerschmidt, Nicolas Fratzscher, Konstantin Livanov, Natalia Zamoshchik, Emil J. W. List‐Kratochvil   +5 more
wiley   +1 more source

Counter‐ion modulation: A facile approach toward quenching‐resistant multi‐resonance emitters for efficient narrowband electroluminescence

FlexMat, EarlyView.
Quenching‐resistant carbocation‐based multi‐resonance emitters are developed via a facile counter‐ion modulation strategy, giving much narrowed emission bands under high doping concentrations, and greatly improved device efficiency for solution‐processed narrowband OLEDs by simply increasing the size of counter ions.
Tao Li, Guimin Zhao, Yuanyuan Li, Zhihua Ma, Zhicai Chen, Fangfang Huang, Ronghao Yang, Wei Jiang, Xin Ai, Shiyang Shao   +9 more
wiley   +1 more source

Recent advances and prospects for high‐efficiency blue hot exciton organic light‐emitting diodes

FlexMat, EarlyView.
Blue organic light‐emitting diodes (OLEDs) face great challenges in achieving the balance between color purity, device efficiency, and stability. Hot exciton materials offer a solution by rapidly converting non‐emissive triplet excitons into singlet ones through a high‐lying reverse intersystem crossing process.
Xiaoen Shi, Shuyuan Ge, Futong Liu, Ping Lu   +3 more
wiley   +1 more source

Tin‐based perovskite light‐emitting diodes: Progress and perspective

InfoScience, EarlyView.
This review assesses tin‐based perovskite light‐emitting diodes (PeLEDs), focusing on the limitations of Sn2+ oxidation–induced defects and uncontrolled crystallization. By evaluating advanced device engineering and structural innovations, this article highlights their viability in narrowband pure‐red displays and near‐infrared optical communication ...
Wenhao Bai, Tongtong Xuan, Guanhua Ren, Ting Gong, Kunjie Song, Jiaxin Duan, Huili Li, Rong‐Jun Xie   +7 more
wiley   +1 more source

Plastic luminescence in mechanoluminescent composites

InfoMat, EarlyView.
Through compression tests and numerical simulations, this study demonstrates that the luminescence of a mechanoluminescent (ML) composite is strongly associated with plastic strain, thereby providing new insight into deformation‐induced luminescence during the plastic stage.
Jianbo Fei, Jun Xiao, Dengfeng Peng, Xiangsheng Chen   +3 more
wiley   +1 more source

Efficient near‐infrared light‐emitting diodes via enlarging grains of tin‐based perovskites

InfoMat, EarlyView.
In this work, penicillamine molecules are introduced into Sn‐based perovskites to slow crystallization, yielding large‐grain films with reduced grain boundaries and passivated defects. The resulting perovskite light‐emitting diodes achieve a maximum external quantum efficiency of 17.5% at 894 nm and an operational half‐lifetime of 0.95 h under current ...
Piaoyang Shen, Shuo Ding, Shaowen Chen, Chang Gu, Chaoyu Xiang   +4 more
wiley   +1 more source

A novel n‐type dimer dopant for semiconducting polymers

Polymer International, EarlyView.
A novel molecular n‐type dopant (1) with superior capacity to dope conjugated polymers is introduced. After charge transfer the product (2) remains in the polymer. Abstract Efficient and stable doping of organic semiconductors is crucial for adjusting their electrical properties.
Andreas Opitz, Nele Merten, Vasu Malhotra, Anukul Jana, Norbert Koch   +4 more
wiley   +1 more source