High-efficiency red organic light-emitting diodes based on a double-emissive layer with an external quantum efficiency over 30%

2018 ◽  
Vol 6 (26) ◽  
pp. 7042-7045 ◽  
Author(s):  
Yanping Wang ◽  
Wenjie Wang ◽  
Zhaoji Huang ◽  
Huahang Wang ◽  
Junting Zhao ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Emissive Layer ◽  
Organic Light ◽  
Red Oleds

Red OLEDs (devices D1–D3) with a S-EML and a D-EML have been demonstrated to have different EQEs.

Non-halogenated solvent-processed highly efficient green Ir(iii) complexes with an external quantum efficiency exceeding 23% for phosphorescent organic light-emitting diodes

2020 ◽  
Vol 8 (37) ◽  
pp. 12959-12967
Author(s):  
Raja Kumaresan ◽  
Athithan Maheshwaran ◽  
Ho-Yeol Park ◽  
Kyungmin Sung ◽  
Jungmin Choi ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light

High efficiency green phosphorescent Ir(III) complexes with solubilizing groups introduced to enable non-halogenated solvent-based fabrication of PHOLEDs with high EQE and CE values.

9-(10-phenylanthracen-9-yl)-7H-Fluoreno[4, 3-b]Benzofuran Derivatives for Blue Organic Light-Emitting Diodes

2021 ◽  
Vol 16 (5) ◽  
pp. 844-848
Author(s):  
Beomsu Jang ◽  
Giwoong Han ◽  
Kiju Kim ◽  
Hakjun Lee ◽  
Young Kwan Kim ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Power Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Maximum Luminance ◽  
Light Emitting ◽  
Emissive Layer ◽  
Organic Light ◽  
Luminance Efficiency

In this study, two blue fluorescent using phenylanthracene-substituted furan derivatives were synthesized for organic light-emitting diodes (OLEDs) and subsequently characterized. To study the electroluminescent properties of the materials, OLED devices were fabricated using these two materials as an emissive layer (EML). The device using 7,7-diphenyl-9-(10-phenylanthracen-9-yl)-7H-fluoreno[4,3-b]benzofuran in the emitting layer showed the highest external quantum efficiency (EQE) value, 3.10%. It also showed the maximum luminance efficiency of 2.41 cd/A and maximum power efficiency of 1.90 lm/W with CIE coordinates of (0.15, 0.08).

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.

Reduced efficiency roll-off in all-phosphorescent white organic light-emitting diodes with an external quantum efficiency of over 20%

2015 ◽  
Vol 3 (14) ◽  
pp. 3304-3310 ◽  
Author(s):  
Liping Zhu ◽  
Zhongbin Wu ◽  
Jiangshan Chen ◽  
Dongge Ma
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Rational Design ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light

A rational design of the emission layers to achieve a high efficiency WOLED with reduced roll-off.

An oligocarbazole-encapsulated heteroleptic red iridium complex for solution-processed nondoped phosphorescent organic light-emitting diodes with over 10% external quantum efficiency

2017 ◽  
Vol 5 (23) ◽  
pp. 5749-5756 ◽  
Author(s):  
Lingcheng Chen ◽  
Shumeng Wang ◽  
Zhimin Yan ◽  
Junqiao Ding ◽  
Lixiang Wang
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Iridium Complex ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light

By fully encapsulating the heteroleptic red Ir complex with carbazole dendrons, solution-processed nondoped electrophosphorescent devices reveal over 10% EQE.

Sky-blue delayed fluorescence molecules based on pyridine-substituted acridone for efficient organic light-emitting diodes

2021 ◽  
Author(s):  
Jingwen Xu ◽  
Xing Wu ◽  
Jingjing Guo ◽  
Zujin Zhao ◽  
Ben Zhong Tang
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Red Oleds

In comparison with green and red OLEDs, which have well developed with satisfactory electroluminescence (EL) performances, high-efficiency blue OLEDs still need further exploration. Herein, by reasonably strengthening the rigidity of...

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