scholarly journals High efficiency phosphorescence light-emitting diodes with conjugated polymer host

2009 ◽  
Vol 58 (12) ◽  
pp. 8630
Author(s):  
Niu Qiao-Li ◽  
Zhang Yong ◽  
Fan Guang-Han
Keyword(s):  
Conjugated Polymer ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Polymer Host

High efficiency all phosphorescent white light-emitting diodes based on conjugated polymer host

2011 ◽  
Vol 161 (19-20) ◽  
pp. 2149-2153 ◽  
Author(s):  
Qiaoli Niu ◽  
Junbiao Peng ◽  
Yong Zhang ◽  
Yong Zhang ◽  
Bo Liang
Keyword(s):  
White Light ◽  
Conjugated Polymer ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
White Light Emitting Diodes ◽  
Polymer Host

The DFT study on non-conjugated polymer host materials based on styrene derivatives for phosphorescent polymer light-emitting diodes

2015 ◽  
Vol 28 (8) ◽  
pp. 554-563 ◽  
Author(s):  
Xiaguang Zhang ◽  
Wei Shen ◽  
Huili Sun ◽  
Pei Yu ◽  
Rongxing He ◽  
...  
Keyword(s):  
Conjugated Polymer ◽  
Light Emitting Diodes ◽  
Dft Study ◽  
Light Emitting ◽  
Host Materials ◽  
Polymer Light Emitting Diodes ◽  
Styrene Derivatives ◽  
Polymer Host

scholarly journals High-efficiency conjugated-polymer-hosted blue phosphorescent light-emitting diodes

2012 ◽  
Vol 57 (27) ◽  
pp. 3639-3643 ◽  
Author(s):  
QiaoLi Niu ◽  
Yong Zhang ◽  
YongLi Wang ◽  
Xin Wang ◽  
Miao He
Keyword(s):  
Conjugated Polymer ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Blue Phosphorescent

Benzonitrile-based AIE polymer host with simple synthesis process for high-efficiency solution-processable green and blue TADF organic light emitting diodes

2022 ◽  
Author(s):  
Tao Zhou ◽  
Kaizhi Zhang ◽  
Qingpeng Cao ◽  
Hui Xu ◽  
Xinxin Ban ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Synthesis Process ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light ◽  
Polymer Host

Polymer host material have great potential for enable small molecular thermally activated delayed fluorescence (TADF) emitters to construct solution-processed organic light-emitting diodes (OLEDs). Herein, four novel benzonitrile-based polymer host, P4CzCN-PA,...

High-efficiency red polymer light-emitting diodes based on optimizing blend polymer host

2009 ◽  
Vol 159 (12) ◽  
pp. 1234-1237 ◽  
Author(s):  
Y. Zhang ◽  
Q. Hou ◽  
Y.Q. Mo
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Polymer Light Emitting Diodes ◽  
Blend Polymer ◽  
Polymer Host

Dendritic Self-Host Phosphorescent Iridium Materials for High-Efficiency Organic Light-Emitting Diodes

2018 ◽  
Vol 22 (6) ◽  
pp. 590-599 ◽  
Author(s):  
Chuang Yao ◽  
Cuifeng Jiang ◽  
Jinshan Wang
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light

High-efficiency, long-lifetime deep-blue organic light-emitting diodes

2021 ◽  
Vol 15 (3) ◽  
pp. 208-215 ◽  
Author(s):  
Soon Ok Jeon ◽  
Kyung Hyung Lee ◽  
Jong Soo Kim ◽  
Soo-Ghang Ihn ◽  
Yeon Sook Chung ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Deep Blue ◽  
Organic Light ◽  
Long Lifetime

scholarly journals High efficiency blue organic light-emitting diodes with below-bandgap electroluminescence

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Maria Vasilopoulou ◽  
Abd. Rashid bin Mohd Yusoff ◽  
Matyas Daboczi ◽  
Julio Conforto ◽  
Anderson Emanuel Ximim Gavim ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
High Mobility ◽  
Organic Light Emitting Diodes ◽  
Triplet Energy ◽  
Material Interface ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light ◽  
Hole Transporting

AbstractBlue organic light-emitting diodes require high triplet interlayer materials, which induce large energetic barriers at the interfaces resulting in high device voltages and reduced efficiencies. Here, we alleviate this issue by designing a low triplet energy hole transporting interlayer with high mobility, combined with an interface exciplex that confines excitons at the emissive layer/electron transporting material interface. As a result, blue thermally activated delay fluorescent organic light-emitting diodes with a below-bandgap turn-on voltage of 2.5 V and an external quantum efficiency (EQE) of 41.2% were successfully fabricated. These devices also showed suppressed efficiency roll-off maintaining an EQE of 34.8% at 1000 cd m−2. Our approach paves the way for further progress through exploring alternative device engineering approaches instead of only focusing on the demanding synthesis of organic compounds with complex structures.

scholarly journals Efficient and large-area all vacuum-deposited perovskite light-emitting diodes via spatial confinement

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Peipei Du ◽  
Jinghui Li ◽  
Liang Wang ◽  
Liang Sun ◽  
Xi Wang ◽  
...  
Keyword(s):  
High Resolution ◽  
Large Scale ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Scale Production ◽  
Nonradiative Recombination ◽  
Large Area ◽  
Spatial Confinement ◽  
Light Emitting ◽  
Large Scale Production

AbstractWith rapid advances of perovskite light-emitting diodes (PeLEDs), the large-scale fabrication of patterned PeLEDs towards display panels is of increasing importance. However, most state-of-the-art PeLEDs are fabricated by solution-processed techniques, which are difficult to simultaneously achieve high-resolution pixels and large-scale production. To this end, we construct efficient CsPbBr3 PeLEDs employing a vacuum deposition technique, which has been demonstrated as the most successful route for commercial organic LED displays. By carefully controlling the strength of the spatial confinement in CsPbBr3 film, its radiative recombination is greatly enhanced while the nonradiative recombination is suppressed. As a result, the external quantum efficiency (EQE) of thermally evaporated PeLED reaches 8.0%, a record for vacuum processed PeLEDs. Benefitting from the excellent uniformity and scalability of the thermal evaporation, we demonstrate PeLED with a functional area up to 40.2 cm2 and a peak EQE of 7.1%, representing one of the most efficient large-area PeLEDs. We further achieve high-resolution patterned perovskite film with 100 μm pixels using fine metal masks, laying the foundation for potential display applications. We believe the strategy of confinement strength regulation in thermally evaporated perovskites provides an effective way to process high-efficiency and large-area PeLEDs towards commercial display panels.

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