Highly efficient homojunction organic light-emitting diodes

2015 ◽  
Vol 3 (26) ◽  
pp. 6862-6867 ◽  
Author(s):  
Qiang Wang ◽  
Yali Zhao ◽  
Panlong Qiu ◽  
Chao Wu ◽  
Jiangshan Chen ◽  
...  
Keyword(s):  
High Performance ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Device Structure ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light

Two types of high-performance homojunction OLEDs, blue p–i–n TOLEDs and bottom-emitting WOLEDs, were realized by meticulous optimization of the device structure.

Manipulating MLCT transition character with ppy-type four-coordinate organoboron skeleton for highly efficient long-wavelength Ir-based phosphors in organic light-emitting diodes

2021 ◽  
Author(s):  
Zhao Feng ◽  
Yue Yu ◽  
Xiaolong Yang ◽  
Yuanhui Sun ◽  
Daokun Zhong ◽  
...  
Keyword(s):  
High Performance ◽  
Light Emitting Diodes ◽  
Molecular Design ◽  
Design Strategy ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Long Wavelength ◽  
Highly Efficient ◽  
Mlct Transition ◽  
Organic Light

Inspired by the intriguing optoelectronic characteristics of 2-phenylpyridine-type (ppy-type) four-coordinate organoboron skeleton, we envisage a molecular design strategy through manipulating MLCT transition character to develop high-performance long-wavelength Ir-based phosphors with...

scholarly journals Embryonic development of fully biocompatible organic light-emitting diodes

2021 ◽  
Author(s):  
Bruno F.E. Matarese
Keyword(s):  
Light Source ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Light Emitting Diode ◽  
Organic Light Emitting Diodes ◽  
Device Structure ◽  
Light Emitting ◽  
Organic Light ◽  
Biological Environment

Prototype fully biocompatible organic light-emitting diodes are investigated, with a view to creating a suitable and high-performance light source as a medical implant device. A selection of organic LED materials that have potential suitability for the biological environment are examined. First, the biocompatibility of selected OLED materials was evaluated by the study of cell adhesion and cytotoxicity of HeLa cells cultured on the candidate materials. Thus it was possible to design a device structure composed entirely of biocompatible materials. Second, the characterization of the electroluminescence properties of the prototype OLED is shown and its limitation evaluated. Third, the aqueous stability of the fully biocompatible light source is examined. There is strong evidence that fully biocompatible and stable light-emitting implant devices can be easily constructed. This is the first time a fully biocompatible organic light-emitting diode, albeit embryonic, is reported, with the hope that it may lead to further research to optimize the device performance. Some suggestions on suitable device properties towards in vivo transition are provided.

Sublimable cationic iridium(iii) complexes with large steric hindrance for high-performance organic light-emitting diodes

2019 ◽  
Vol 48 (26) ◽  
pp. 9669-9675 ◽  
Author(s):  
Ruihuan Liu ◽  
Dongxin Ma ◽  
Chen Zhang ◽  
Lian Duan
Keyword(s):  
Steric Hindrance ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light

Highly efficient sublimable cationic iridium(iii) complexes with bulky ancillary and major ligands.

Highly efficient electroluminescence from evaporation- and solution-processable orange–red thermally activated delayed fluorescence emitters

2019 ◽  
Vol 7 (39) ◽  
pp. 12321-12327 ◽  
Author(s):  
Binyan Wang ◽  
Hannan Yang ◽  
Yaxing Zhang ◽  
Guohua Xie ◽  
Huijuan Ran ◽  
...  
Keyword(s):  
High Performance ◽  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Highly Efficient ◽  
Organic Light ◽  
Solution Processable

Orange and red thermally activated delayed fluorescence emitters have been developed for high performance vacuum-deposited and solution-processable organic light-emitting diodes.

High-performance hybrid white organic light-emitting diodes with simple emitting structures and low efficiency roll-off based on blue thermally activated delayed fluorescence emitters with bipolar transport characteristics

2018 ◽  
Vol 6 (35) ◽  
pp. 9510-9516 ◽  
Author(s):  
Chenyang Zhao ◽  
Tianmu Zhang ◽  
Jiangshan Chen ◽  
Donghang Yan ◽  
Dongge Ma
Keyword(s):  
High Performance ◽  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Highly Efficient ◽  
Organic Light ◽  
Low Efficiency

Highly efficient and low efficiency roll-off WOLEDs by simple insertion of multi-ultrathin phosphorescent layers within blue TADF emitters.

Precise manipulation of the carrier recombination zone: a universal novel device structure for highly efficient monochrome and white phosphorescent organic light-emitting diodes with extremely small efficiency roll-off

2018 ◽  
Vol 6 (30) ◽  
pp. 8122-8134 ◽  
Author(s):  
Yanqin Miao ◽  
Kexiang Wang ◽  
Long Gao ◽  
Bo Zhao ◽  
Hua Wang ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Theoretical Limit ◽  
Device Structure ◽  
Light Emitting ◽  
Novel Device ◽  
Highly Efficient ◽  
Carrier Recombination ◽  
Organic Light ◽  
Recombination Zone

The OLEDs, having mixed hosts sandwiched between hole- and electron-transporting hosts, exhibit an EQE exceeding the theoretical limit and extremely small efficiency roll-off.

Novel Carbazole-based Multifunctional Materials with Hybridized Local and Charge-Transfer Excited State Acting as Deep Blue Emitters and Phosphorescent Hosts for Highly Efficient Organic Light-Emitting Diodes

2021 ◽  
Author(s):  
Haitao Zhou ◽  
Mengna Yin ◽  
Zhenhong Zhao ◽  
Yanqin Miao ◽  
Xin Jin ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Multifunctional Materials ◽  
Light Emitting ◽  
Highly Efficient ◽  
Deep Blue ◽  
Organic Light ◽  
Blue Emitters

In this work, two carbazole- and benzo[d]oxazole-based novel multifunctional materials with hybridized local and charge-transfer (HLCT) characteristic, namely OCI and OCT, which could act as deep-blue fluorophors and phosphorescent hosts,...

Ultra-smooth and robust graphene-based hybrid anode for high-performance flexible organic light-emitting diodes

2021 ◽  
Author(s):  
zhikun zhang ◽  
lianlian xia ◽  
Lizhao Liu ◽  
Yuwen Chen ◽  
zuozhi wang ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Chemical Vapor ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Large Particles

Large surface roughness, especially caused by the large particles generated during both the transfer and the doping processes of graphene grown by chemical vapor deposition (CVD) is always a critical...

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