Molecular design tactics enhancing negative polaron stability of p-type host for long device lifetime by fusion of carbazole with furan

2021 ◽  
Author(s):  
Sung Joon Yoon ◽  
Won Jae Chung ◽  
Jun Yeob Lee
Keyword(s):  
Light Emitting Diodes ◽  
Molecular Design ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Type Host ◽  
Organic Light ◽  
Device Lifetime ◽  
P Type ◽  
Polaron Stability ◽  
Blue Phosphorescent

A molecular design with a negative polaron stabilizing unit was developed to extend the device lifetime of blue phosphorescent organic light-emitting diodes (PhOLEDs). A novel p-type host material, 5,10-diphenyl-5,10-dihydrofuro[3,2-c:4,5-c′]dicarbazole (DBFBCzPh),...

Improved positive polaron stability of the p-type host for long lifetime in phosphorescent organic light-emitting diodes

2021 ◽  
Author(s):  
Ji Ae Kang ◽  
Jun Seop Lim ◽  
Jun Yeob Lee
Keyword(s):  
Light Emitting Diodes ◽  
Oxidation Stability ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Type Host ◽  
Organic Light ◽  
Long Lifetime ◽  
Device Lifetime ◽  
P Type ◽  
Polaron Stability

Long lifetime is one of requirements for commercialization of organic light-emitting diodes (OLEDs). In this paper, we improved the device lifetime of phosphorescent OLEDs by enhancing oxidation stability of the...

A negative polaron resistant p-type host for extended lifetime in deep blue phosphorescent organic light-emitting diodes

2020 ◽  
Vol 8 (15) ◽  
pp. 5131-5136 ◽  
Author(s):  
Chang Yoon Yang ◽  
Won Jae Chung ◽  
Hyein Jeong ◽  
Yoonkyoo Lee ◽  
Jun Yeob Lee
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Type Host ◽  
Deep Blue ◽  
Organic Light ◽  
Device Lifetime ◽  
P Type ◽  
Blue Phosphorescent

A negative polaron resistant p-type host improved the device lifetime of blue phosphorescent organic light-emitting diodes.

Molecular design of large-bandgap host materials and their application to blue phosphorescent organic light-emitting diodes

2015 ◽  
Vol 26 ◽  
pp. 218-224 ◽  
Author(s):  
Ju Sik Kang ◽  
Tae Ryang Hong ◽  
Hyung Jong Kim ◽  
Young Hoon Son ◽  
Jong-Kwan Bin ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Molecular Design ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Host Materials ◽  
Blue Phosphorescent

Molecular design of host materials for high power efficiency in blue phosphorescent organic light-emitting diodes doped with an imidazole ligand based triplet emitter

2016 ◽  
Vol 4 (17) ◽  
pp. 3792-3797 ◽  
Author(s):  
Chan Seok Oh ◽  
Jun Yeob Lee ◽  
Chang Ho Noh ◽  
Sung Han Kim
Keyword(s):  
Power Efficiency ◽  
Light Emitting Diodes ◽  
Molecular Design ◽  
Design Strategy ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Host Materials ◽  
Blue Phosphorescent ◽  
Triplet Emitter

Molecular design strategy to improve the power efficiency of blue phosphorescent organic light-emitting diodes was proposed by introducing a CN modified carbazole moiety.

High triplet energy exciplex host derived from a CN modified carbazole based n-type host for improved efficiency and lifetime in blue phosphorescent organic light-emitting diodes

2018 ◽  
Vol 6 (38) ◽  
pp. 10308-10314 ◽  
Author(s):  
Su Kyeong Shin ◽  
Si Hyun Han ◽  
Jun Yeob Lee
Keyword(s):  
Electron Transport ◽  
Light Emitting Diodes ◽  
Hole Transport ◽  
Organic Light Emitting Diodes ◽  
Triplet Energy ◽  
Light Emitting ◽  
Type Host ◽  
Organic Light ◽  
Blue Phosphorescent ◽  
Transport Type

High triplet energy exciplexes which can improve the lifetime of blue phosphorescent organic light-emitting diodes were developed by mixing a carbazole based hole transport type host with a CN modified carbazole based electron transport type host.

Molecular design and synthetic approach to C2,C3,C4-modified carbazoles: high triplet energy bipolar host materials for efficient blue phosphorescent organic light emitting diodes

2019 ◽  
Vol 55 (56) ◽  
pp. 8178-8181 ◽  
Author(s):  
Rajendra Kumar Konidena ◽  
Kyung Hyung Lee ◽  
Jun Yeob Lee
Keyword(s):  
Light Emitting Diodes ◽  
Molecular Design ◽  
Organic Light Emitting Diodes ◽  
Synthetic Approach ◽  
Triplet Energy ◽  
Light Emitting ◽  
Organic Light ◽  
Host Materials ◽  
Blue Phosphorescent

Herein, we report the first examples of the design of and synthetic approach to C3/C4 and C2/C3/C4-modified carbazole based high triplet energy bipolar host materials for blue phosphorescent organic light emitting diodes.

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