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)...

Multifunctional emitters for efficient simplified non-doped blueish green organic light emitting devices with extremely low efficiency roll-off

2017 ◽  
Vol 5 (26) ◽  
pp. 6527-6536 ◽  
Author(s):  
Amjad Islam ◽  
Dongdong Zhang ◽  
Xinhua Ouyang ◽  
Rongjuan Yang ◽  
Tao Lei ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Scientific Research ◽  
Industrial Applications ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Highly Efficient ◽  
Organic Light ◽  
Device Structures ◽  
Low Efficiency

Highly efficient organic light-emitting diodes (OLEDs) with simplified device structures are widely desired for both scientific research and industrial applications.

Efficient pyrene-imidazole derivatives for organic light-emitting diodes

RSC Advances ◽  
2016 ◽  
Vol 6 (21) ◽  
pp. 17239-17245 ◽  
Author(s):  
Yulong Liu ◽  
Qing Bai ◽  
Jinyu Li ◽  
Shitong Zhang ◽  
Chen Zhang ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Imidazole Derivative ◽  
Light Emitting ◽  
Imidazole Derivatives ◽  
Highly Efficient ◽  
Organic Light ◽  
Low Efficiency

A highly efficient green OLED based on an AIE-active pyrene-imidazole derivative PyTPEI achieves the highest LE of 8.73 cd A−1 with low efficiency roll-off.

Highly efficient thermally activated delayed fluorescence yellow organic light-emitting diodes with a low efficiency roll-off

2019 ◽  
Vol 7 (26) ◽  
pp. 8063-8069 ◽  
Author(s):  
Xiang-Long Li ◽  
Xinyi Cai ◽  
Muhammad Umair Ali ◽  
Shi-Jian Su ◽  
Hong Meng
Keyword(s):  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Highly Efficient ◽  
Organic Light ◽  
Device Engineering ◽  
Low Efficiency

Highly efficient TADF yellow OLEDs with an extremely low efficiency roll-off have been obtained herein via rational device engineering.

Highly efficient and low efficiency roll-off organic light-emitting diodes with double-exciplex forming co-hosts

2021 ◽  
Author(s):  
Tianmu Zhang ◽  
Jingwen Yao ◽  
Shuai Zhang ◽  
Shu Xiao ◽  
Wei Liu ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Highly Efficient ◽  
Organic Light ◽  
Low Efficiency

Single-exciplex system has been extensively used for constructing efficient organic light-emitting diodes. In this work, double-exciplex forming co-hosts are first employed as the hosts of the phosphorescent materials in the...

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