Highly efficient yellow phosphorescent OLEDs based on two novel bipolar host materials

2015 ◽  
Vol 39 (10) ◽  
pp. 7954-7960 ◽  
Author(s):  
Song Zhang ◽  
Qiu-Lei Xu ◽  
Jing-Cheng Xia ◽  
Yi-Ming Jing ◽  
You-Xuan Zheng ◽  
...  
Keyword(s):  
Current Efficiency ◽  
Highly Efficient ◽  
Host Materials ◽  
Maximum Current ◽  
Low Efficiency

Yellow OLEDs based on bipolar host materials show a maximum current efficiency of 44.4 cd A−1 with low efficiency roll-off.

Highly efficient orange-red electroluminescence of iridium complexes with good electron mobility

2017 ◽  
Vol 5 (32) ◽  
pp. 8150-8159 ◽  
Author(s):  
Hua-Bo Han ◽  
Rong-Zhen Cui ◽  
Yi-Ming Jing ◽  
Guang-Zhao Lu ◽  
You-Xuan Zheng ◽  
...  
Keyword(s):  
Current Efficiency ◽  
Electron Mobility ◽  
Quantum Yields ◽  
Iridium Complexes ◽  
Maximum Luminance ◽  
High Quantum ◽  
Highly Efficient ◽  
Maximum Current ◽  
Low Efficiency

Two orange-red iridium complexes with high quantum yields and good electron mobility were applied in efficient OLEDs showing a maximum luminance of 129 466 cd m−2, a maximum current efficiency of 62.96 cd A−1 with low efficiency roll-off.

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.

Highly efficient yellow electroluminescence of iridium complexes with good electron mobility

2018 ◽  
Vol 2 (7) ◽  
pp. 1284-1290 ◽  
Author(s):  
Hua-Bo Han ◽  
Xiao-Feng Ma ◽  
Zheng-Guang Wu ◽  
You-Xuan Zheng
Keyword(s):  
Current Efficiency ◽  
Quantum Efficiency ◽  
Electron Mobility ◽  
External Quantum Efficiency ◽  
Iridium Complexes ◽  
Highly Efficient ◽  
Maximum Current ◽  
Low Efficiency

Herein, two efficient yellow iridium complexes with good electron mobility were applied in OLEDs, showing a maximum current efficiency of 106.66 cd A−1 and an external quantum efficiency of 29.7% with low efficiency roll-off.

Crystal structure, photoluminescence and electroluminescence of three bluish green light-emitting iridium complexes

2016 ◽  
Vol 45 (17) ◽  
pp. 7366-7372 ◽  
Author(s):  
Qiu-Lei Xu ◽  
Xiao Liang ◽  
Liang Jiang ◽  
Yue Zhao ◽  
You-Xuan Zheng
Keyword(s):  
Crystal Structure ◽  
Current Efficiency ◽  
Green Light ◽  
Iridium Complexes ◽  
Light Emitting ◽  
Bluish Green ◽  
Maximum Current ◽  
Low Efficiency

Three iridium(iii) complexes were applied in efficient OLEDs showing a maximum current efficiency (ηc) value of 37.61 cd A−1 with low efficiency roll-off.

Syntheses, photoluminescence and electroluminescence of two novel platinum(ii) complexes

2017 ◽  
Vol 46 (1) ◽  
pp. 150-157 ◽  
Author(s):  
Guang-Zhao Lu ◽  
Yan Li ◽  
Yi-Ming Jing ◽  
You-Xuan Zheng
Keyword(s):  
Current Efficiency ◽  
Platinum Complexes ◽  
Peak Current ◽  
Highly Efficient ◽  
Low Efficiency ◽  
A Current

Highly efficient green OLEDs based on two platinum complexes showed a peak current efficiency of 48.3 cd A−1 with low efficiency roll-off; and even at a brightness of 1000 cd m−2, a current efficiency of 47.0 cd A−1 could still be obtained.

Yellow electrophosphorescent devices with hosts containing N1-(naphthalen-1-yl)-N1,N4-diphenylnaphthalene-1,4-diamine and tetraphenylsilane units

RSC Advances ◽  
2015 ◽  
Vol 5 (35) ◽  
pp. 27235-27241 ◽  
Author(s):  
Song Zhang ◽  
Qiu-Lei Xu ◽  
Yi-Ming Jing ◽  
Xuan Liu ◽  
Guang-Zhao Lu ◽  
...  
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Power Efficiency ◽  
High Glass Transition Temperature ◽  
Host Materials ◽  
Maximum Current ◽  
Novel Host ◽  
Low Efficiency

Two novel host materials SiP and SiM with a high glass transition temperature were synthesized and the yellow phosphorescent OLEDs show maximum current and power efficiency of 40.81 cd A−1 and 33.60 lm W−1 with low efficiency roll-off.

Small organic molecules based on oxazole/thiazole with excellent performances in green and red phosphorescent organic light-emitting diodes

RSC Advances ◽  
2016 ◽  
Vol 6 (57) ◽  
pp. 51575-51582 ◽  
Author(s):  
Guojian Tian ◽  
Xiang Wei ◽  
Ning Xiang ◽  
Jinhai Huang ◽  
Jin Cao ◽  
...  
Keyword(s):  
Current Efficiency ◽  
Organic Molecules ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Small Organic Molecules ◽  
Light Emitting ◽  
Organic Light ◽  
Host Materials ◽  
Maximum Current

Four small organic host materials based on oxazole/thiazole have been synthesized and fully characterized. The best performance of compound 2d was a maximum current efficiency of 50.7 cd A−1 for green device and a maximum current efficiency of 18.7 cd A−1 for red device.

Novel bipolar host materials based on 1,3,5-triazine derivatives for highly efficient phosphorescent OLEDs with extremely low efficiency roll-off

2012 ◽  
Vol 14 (41) ◽  
pp. 14255 ◽  
Author(s):  
Xiao-Ke Liu ◽  
Cai-Jun Zheng ◽  
Jing Xiao ◽  
Jun Ye ◽  
Chuan-Lin Liu ◽  
...  
Keyword(s):  
Highly Efficient ◽  
Host Materials ◽  
Triazine Derivatives ◽  
Low Efficiency

A Spiro [Fluorene-9, 9’-Xanthene]-Based Host Material for Efficient Green and Blue Phosphorescent OLED

2013 ◽  
Vol 331 ◽  
pp. 503-507 ◽  
Author(s):  
Ye Ren Ni ◽  
Hai Quan Su ◽  
Wei Huang ◽  
Jian Feng Zhao ◽  
Yan Qian ◽  
...  
Keyword(s):  
Current Efficiency ◽  
Power Efficiency ◽  
Low Voltage ◽  
Luminance Level ◽  
Host Material ◽  
Light Emitting ◽  
Good Thermal Stability ◽  
Turn On ◽  
Host Materials ◽  
Maximum Current

A spiro [fluorene-9,9-xanthen-based host material SFX-PF, without possessing conventional hole-or electron-transporting units, has been demonstrated to be host material for efficient and low voltage green phosphorescent organic light-emitting device (PHOLED). This compound showed good thermal stability with high glass transition temperatures (Tg) at 172 °C. The green device exhibited a low turn-on voltage of 3 V, and maximum current efficiency, power efficiency, and external quantum efficiency (EQE) up to 47.9 cd/A, 45.4 lm/W, and 13.2%, respectively. At the luminance level of 1000 cd/m2, the driving voltages are still lower than 4 V with 15.9% roll-off in the EQE. In addition, SFX-PF can also host Fir6 with the blue device exhibiting a low turn-on voltage of 2.8 V and maximum current efficiency, power efficiency, and EQE up to 12.8 cd/A, 11.3 lm/W, and 7.5%, respectively. Based on our present and previous studies, it can be concluded that SFX could serve as a new building block for designing blue and green phosphorescent host materials.

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