Highly efficient yellow phosphorescent organic light-emitting diodes with novel phosphine oxide-based bipolar host materials

2015 ◽  
Vol 3 (43) ◽  
pp. 11540-11547 ◽  
Author(s):  
Song Zhang ◽  
Qiu-Lei Xu ◽  
Jing-Cheng Xia ◽  
Yi-Ming Jing ◽  
You-Xuan Zheng ◽  
...  
Keyword(s):  
Phosphine Oxide ◽  
External Quantum Efficiency ◽  
Power Efficiency ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light ◽  
Host Materials ◽  
Maximum Current ◽  
Low Efficiency

Highly efficient yellow OLEDs based on bipolar host materials show a maximum current efficiency of 68.28 cd A−1, a maximum external quantum efficiency of 21.3% and a maximum power efficiency of 50.90 lm W−1 with low efficiency roll-off.

9,9-Diphenyl-thioxanthene derivatives as host materials for highly efficient blue phosphorescent organic light-emitting diodes

2015 ◽  
Vol 3 (38) ◽  
pp. 9999-10006 ◽  
Author(s):  
Kunkun Liu ◽  
Xiang-Long Li ◽  
Ming Liu ◽  
Dongcheng Chen ◽  
Xinyi Cai ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Power Efficiency ◽  
Light Emitting Diodes ◽  
Maximum Power ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Host Materials ◽  
Blue Phosphorescent

A series of 9,9-diphenyl-9H-thioxanthene derivatives are reported as host materials in blue phosphorescent OLEDs, giving a maximum power efficiency of 69.7 lm W−1 and an external quantum efficiency of 29.0%.

scholarly journals Highly efficient non-doped blue organic light emitting diodes based on a D–π–A chromophore with different donor moieties

RSC Advances ◽  
2017 ◽  
Vol 7 (22) ◽  
pp. 13604-13614 ◽  
Author(s):  
Venugopal Thanikachalam ◽  
Palanivel Jeeva ◽  
Jayaraman Jayabharathi
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Light Emitting Diodes ◽  
Blue Emission ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light ◽  
Maximum Current

The non-doped OLED based on MPPIS-Cz exhibits blue emission with CIE of (0.16, 0.08), maximum current and external quantum efficiency of 1.52 cd A−1 and of 1.42%, respectively.

scholarly journals Highly efficient triazine/carbazole-based host material for green phosphorescent organic light-emitting diodes with low efficiency roll-off

RSC Advances ◽  
2017 ◽  
Vol 7 (12) ◽  
pp. 7287-7292 ◽  
Author(s):  
Mingming Hu ◽  
Yang Liu ◽  
Yi Chen ◽  
Wenxuan Song ◽  
Lei Gao ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Host Material ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light ◽  
Host Materials ◽  
Low Efficiency

Two novel triazin/carbazole-based host materials were designed and synthesized, which demonstrated outstanding EL performance with maximum CE, PE and EQE of 69.3 cd A−1, 54.2 lm W−1 and 21.9%, respectively.

9-Silafluorene and 9-germafluorene: novel platforms for highly efficient red phosphorescent organic light-emitting diodes

2018 ◽  
Vol 6 (30) ◽  
pp. 8144-8151 ◽  
Author(s):  
Xiang-Yang Liu ◽  
Qi-Sheng Tian ◽  
Danli Zhao ◽  
Quan Ran ◽  
Liang-Sheng Liao ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Light Emitting Diodes ◽  
De Novo ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light ◽  
Host Materials ◽  
First Time

De novo molecular platforms have been applied to build host materials for highly efficient PHOLEDs. A 9-silafluorene derivative was studied for the first time as a host and an external quantum efficiency of over 28% was achieved successfully in red PHOLEDs.

Efficient organic light-emitting diodes based on iridium(III) complexes containing indolo[3,2,1-jk]carbazole derivatives with narrow emission bandwidths and low efficiency roll offs

2021 ◽  
Author(s):  
Xiang-Ji Liao ◽  
Jin-Jun Zhu ◽  
Li Yuan ◽  
Zhi-Ping Yan ◽  
Xu-Feng Luo ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Carbazole Derivatives ◽  
Highly Efficient ◽  
Organic Light ◽  
Low Efficiency ◽  
Narrow Emission

In this work, two cyclometalated ligands 2-(pyridin-2-yl)indolo[3,2,1-jk]carbazole (pyidcz) and 2-(4-(trifluoromethyl)pyridin-2-yl)indolo[3,2,1-jk]carbazole (tfpyidcz) using indolo[3,2,1-jk]carbazole unit were synthesized for highly efficient iridium(III) complexes (pyidcz)2Ir(tmd) and (tfpyidcz)2Ir(tmd) (tmd = 2,2,6,6-tetramethyl-3,5-heptanedione). The two Ir(III)...

Tuning peripheral group density in ternary phosphine oxide hosts for low-voltage-driven yellow PhOLEDs

2015 ◽  
Vol 3 (26) ◽  
pp. 6709-6716 ◽  
Author(s):  
Jing Li ◽  
Zhensong Zhang ◽  
Chunmiao Han ◽  
Dongxue Ding ◽  
Yi Zhao ◽  
...  
Keyword(s):  
Phosphine Oxide ◽  
Light Emitting Diodes ◽  
Low Voltage ◽  
Organic Light Emitting Diodes ◽  
Diphenylphosphine Oxide ◽  
Light Emitting ◽  
Organic Light ◽  
Host Materials ◽  
Group Density

Fluorene and diphenylphosphine oxide were employed as peripheral groups to construct ternary host materials DBFxPODEFn with benzofuran as a core, which realized the low-voltage-driven efficient yellow phosphorescence organic light-emitting diodes.

Highly efficient bluish green organic light-emitting diodes of iridium(iii) complexes with low efficiency roll-off

2018 ◽  
Vol 47 (22) ◽  
pp. 7587-7593 ◽  
Author(s):  
Ning Su ◽  
Zheng-Guang Wu ◽  
You-Xuan Zheng
Keyword(s):  
Current Efficiency ◽  
External Quantum Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
High Current ◽  
High Current Efficiency ◽  
Light Emitting ◽  
Organic Light ◽  
Bluish Green ◽  
Low Efficiency

Two efficient bluish green iridium(iii) complexes were applied as emitters in the organic light-emitting diodes, which showing high current efficiency of 58.17 cd A−1 and external quantum efficiency of 25.33% with low efficiency roll-off.

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