Manipulation of electron deficiency of δ-carboline derivatives as bipolar hosts for blue phosphorescent organic light-emitting diodes with high efficiency at 1000 cd m−2

2016 ◽  
Vol 4 (19) ◽  
pp. 4226-4235 ◽  
Author(s):  
Zhen Zhang ◽  
Jingwei Xie ◽  
Zixing Wang ◽  
Bowen Shen ◽  
Hedan Wang ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Structure Property ◽  
Light Emitting ◽  
Organic Light ◽  
Structure Property Relationship ◽  
Electron Deficiency ◽  
Relationship Of ◽  
Blue Phosphorescent

Structure–property relationship of pyridine-modified δ-carboline derivatives as bipolar hosts for highly efficient blue OLED.

scholarly journals Structure–property relationship of 4-substituted-spirobifluorenes as hosts for phosphorescent organic light emitting diodes: an overview

2017 ◽  
Vol 5 (16) ◽  
pp. 3869-3897 ◽  
Author(s):  
Cyril Poriel ◽  
Joëlle Rault-Berthelot
Keyword(s):  
Light Emitting Diodes ◽  
State Of The Art ◽  
The State ◽  
Organic Light Emitting Diodes ◽  
Present Review ◽  
Structure Property ◽  
Light Emitting ◽  
Organic Light ◽  
Structure Property Relationship ◽  
Relationship Of

The aim of the present review is to report the state of the art of an emerging family of molecules, namely 4-substituted spirobifluorenes (SBFs).

scholarly journals Highly efficient and air-stable Eu(II)-containing azacryptates ready for organic light-emitting diodes

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Jiayi Li ◽  
Liding Wang ◽  
Zifeng Zhao ◽  
Boxun Sun ◽  
Ge Zhan ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Photophysical Properties ◽  
Organic Light Emitting Diodes ◽  
Structure Property ◽  
Light Emitting ◽  
Organic Light ◽  
Structure Property Relationship ◽  
Research On Application ◽  
The Eu

Abstract Divalent europium 5d-4f transition has aroused great attention in many fields, in a way of doping Eu2+ ions into inorganic solids. However, molecular Eu2+ complexes with 5d-4f transition are thought to be too air-unstable to explore their applications. In this work, we synthesized four Eu2+-containing azacryptates EuX2-Nn (X = Br, I, n = 4, 8) and systematically studied the photophysical properties in crystalline samples and solutions. Intriguingly, the EuX2-N8 complexes exhibit near-unity photoluminescence quantum yield, good air-/thermal-stability and mechanochromic property (X = I). Furthermore, we proved the application of Eu2+ complexes in organic light-emitting diodes (OLEDs) with high efficiency and luminance. The optimized device employing EuI2-N8 as emitter has the best performance as the maximum luminance, current efficiency, and external quantum efficiency up to 25470 cd m−2, 62.4 cd A−1, and 17.7%, respectively. Our work deepens the understanding of structure-property relationship in molecular Eu2+ complexes and could inspire further research on application in OLEDs.

High-efficiency red, green and blue phosphorescent homojunction organic light-emitting diodes based on bipolar host materials

2011 ◽  
Vol 12 (5) ◽  
pp. 843-850 ◽  
Author(s):  
Chao Cai ◽  
Shi-Jian Su ◽  
Takayuki Chiba ◽  
Hisahiro Sasabe ◽  
Yong-Jin Pu ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Host Materials ◽  
Blue Phosphorescent

Dibenzo[b,d]furan and dibenzo[b,d]thiophene molecular dimers as hole blocking materials for high-efficiency and long-lived blue phosphorescent organic light-emitting diodes

2019 ◽  
Vol 7 (31) ◽  
pp. 9599-9608 ◽  
Author(s):  
Seokhoon Jang ◽  
Kyung Hyung Lee ◽  
Jun Yeob Lee ◽  
Youngu Lee
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Blue Phosphorescent

Novel hole blocking materials based on dibenzo[b,d]furan and dibenzo[b,d]thiophene molecular dimers are synthesized for high-efficiency and long-lived blue phosphorescent OLEDs.

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