Indoloindole as a new building block of a hole transport type host for stable operation in phosphorescent organic light-emitting diodes

2019 ◽  
Vol 7 (20) ◽  
pp. 5988-5994 ◽  
Author(s):  
Ha Lim Lee ◽  
Kyung Hyung Lee ◽  
Jun Yeob Lee
Keyword(s):  
Light Emitting Diodes ◽  
Hole Transport ◽  
Organic Light Emitting Diodes ◽  
Stable Operation ◽  
Light Emitting ◽  
Type Host ◽  
Organic Light ◽  
Transport Unit ◽  
P Type ◽  
Transport Type

An organic material for application as a p-type host of phosphorescent organic light-emitting diodes was newly developed using an indoloindole moiety as a hole transport unit.

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.

A novel electroplex host with dual triplet exciton up-converting channels suppressing triplet exciton induced degradation mechanisms in blue organic light-emitting diodes

2021 ◽  
Author(s):  
Ju Hui Yun ◽  
Jae-Min Kim ◽  
Won Jae Chung ◽  
Jun Seop Lim ◽  
Jun Yeob Lee ◽  
...  
Keyword(s):  
Electron Transport ◽  
Light Emitting Diodes ◽  
Triplet Exciton ◽  
Organic Light Emitting Diodes ◽  
Degradation Mechanisms ◽  
Light Emitting ◽  
Type Host ◽  
Thermally Activated ◽  
Organic Light ◽  
Transport Type

A novel electroplex host with two triplet exciton up-converting channels for suppressed triplet exciton triggered degradation mechanisms was developed using an electron transport type host (n-type host) with thermally activated...

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...

Long lifetime blue phosphorescent organic light-emitting diodes with an exciton blocking layer

2015 ◽  
Vol 3 (18) ◽  
pp. 4640-4645 ◽  
Author(s):  
Jeong-A Seo ◽  
Sang Kyu Jeon ◽  
Myoung Seon Gong ◽  
Jun Yeob Lee ◽  
Chang Ho Noh ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Hole Transport ◽  
Organic Light Emitting Diodes ◽  
Blocking Layer ◽  
Triplet Energy ◽  
Light Emitting ◽  
Organic Light ◽  
Long Lifetime ◽  
Blue Phosphorescent ◽  
Transport Type

An acridine derived compound, 9,9-dimethyl-10-(9-phenyl-9H-carbazol-3-yl)-9,10-dihydroacridine (PCZAC), was newly designed as a hole transport type high triplet energy material for application as a hole transport type exciton blocking layer of blue phosphorescent organic light-emitting diodes.

Improved operational lifetime of deep-red phosphorescent organic light-emitting diodes using a benzothienobenzothiophene (BTBT)-based p-type host material

2021 ◽  
Author(s):  
Daiki Saito ◽  
Hisahiro Sasabe ◽  
Takayoshi Kikuchi ◽  
Takashi Ito ◽  
Hisaki Tsuneyama ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Host Material ◽  
Light Emitting ◽  
Type Host ◽  
Highly Efficient ◽  
Organic Light ◽  
Operational Lifetime ◽  
P Type

Highly efficient and stable deep red OLED is successfully developed by using a BTBT-based p-type host material. This OLED exhibits higher efficiency, and over ×5 longer lifetime than that based on the conventional p-type host material, NPD.

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.

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