scholarly journals Highly efficient all-phosphorescent white organic light-emitting diodes with low efficiency roll-off and stable-color by managing triplet excitons in emissive layer

2020 ◽  
Vol 69 (4) ◽  
pp. 047202
Author(s):  
Xin-Ming Xiao ◽  
Long-Shan Zhu ◽  
Yu Guan ◽  
Jie Hua ◽  
Hong-Mei Wang ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Emissive Layer ◽  
Highly Efficient ◽  
Organic Light ◽  
Low Efficiency ◽  
Triplet Excitons

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)...

Improvement of efficiency and its roll-off at high brightness in white organic light-emitting diodes by strategically managing triplet excitons in the emission layer

2018 ◽  
Vol 6 (40) ◽  
pp. 10793-10803 ◽  
Author(s):  
Shian Ying ◽  
Dezhi Yang ◽  
Xianfeng Qiao ◽  
Yanfeng Dai ◽  
Qian Sun ◽  
...  
Keyword(s):  
High Performance ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Emission Layer ◽  
High Brightness ◽  
Light Emitting ◽  
Organic Light ◽  
Low Efficiency ◽  
Triplet Excitons

High-performance WOLEDs realizing high efficiency and low efficiency roll-off simultaneously were achieved by strategically managing triplet excitons in the emission layer.

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.

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