scholarly journals Phenanthroimidazole-Based Bipolar Carbazoles Featuring Cyano Substituents to Realize Efficient Deep Blue Electroluminescence with External Quantum Efficiency Near 6%

2021 ◽  
Author(s):  
Anuj Sharma ◽  
K. R. Justin Thomas ◽  
Mangey Ram Nagar ◽  
Jwo-Huei Jou
Keyword(s):  
Excited State ◽  
Quantum Yield ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Organic Light Emitting Diodes ◽  
High Quantum Yield ◽  
Crucial Issue ◽  
Light Emitting ◽  
Deep Blue ◽  
Organic Light

Developing deep-blue bipolar materials with high quantum yield remains a crucial issue in organic-light emitting diodes. Excited state characteristics of the dyes play a pivotal role in controlling the photoluminescence...

Deep blue phosphorescent organic light-emitting diodes with excellent external quantum efficiency

2013 ◽  
Vol 14 (12) ◽  
pp. 3228-3233 ◽  
Author(s):  
Jungeun Park ◽  
Hankook Oh ◽  
Sihyun Oh ◽  
Jinho Kim ◽  
Hyun Jin Park ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Deep Blue ◽  
Organic Light ◽  
Blue Phosphorescent

An excited state managing molecular design platform of blue thermally activated delayed fluorescence emitters by π-linker engineering

2020 ◽  
Vol 8 (5) ◽  
pp. 1736-1745 ◽  
Author(s):  
Kyung Hyung Lee ◽  
Soon Ok Jeon ◽  
Yeon Sook Chung ◽  
Masaki Numata ◽  
Hasup Lee ◽  
...  
Keyword(s):  
Excited State ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Molecular Design ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light

A molecular design platform of blue thermally activated delayed fluorescence (TADF) emitters to boost the external quantum efficiency and efficiency roll-off of blue TADF organic light-emitting diodes (OLEDs) was developed.

High-efficiency near-infrared fluorescent organic light-emitting diodes with small efficiency roll-off based on AIE-active phenanthro[9,10-d]imidazole derivatives

2020 ◽  
Vol 8 (20) ◽  
pp. 6883-6890 ◽  
Author(s):  
Futong Liu ◽  
Yongbo Tan ◽  
Hui Liu ◽  
Xiangyang Tang ◽  
Lei Gao ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Near Infrared ◽  
High Efficiency ◽  
Organic Light Emitting Diodes ◽  
Strong Fluorescence ◽  
Light Emitting ◽  
Photoluminescence Quantum Yield ◽  
Organic Light

PIBz-3-PTZ exhibits strong fluorescence with a photoluminescence quantum yield of 35% in films. The nondoped device achieves a maximum external quantum efficiency of 2.02% peaking at 672 nm with small efficiency roll-off.

The structure optimization of phenanthroimidazole based isomers with external quantum efficiency approaching 7% in non-doped deep-blue OLEDs

2020 ◽  
Vol 8 (9) ◽  
pp. 2975-2984 ◽  
Author(s):  
Jie-Ji Zhu ◽  
Yuwen Chen ◽  
Yong-Hong Xiao ◽  
Xin Lian ◽  
Guo-Xi Yang ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Structure Optimization ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Deep Blue ◽  
Organic Light

In this work, four phenanthroimidazole (PI) based isomers TPA-PPI-PBI, TPA-PPI-NPBI, PBI-PPI-TPA and NPBI-PPI-TPA for high-efficiency deep-blue organic light-emitting diodes (OLEDs) have been designed and synthesized.

Sign in / Sign up

Export Citation Format

Share Document