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...

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.

CN engineered electron transport type hosts for high efficiency and extended lifetime in blue thermally activated delayed fluorescent organic light-emitting diodes

2021 ◽  
Author(s):  
Sung Yong Byun ◽  
Kyung Hyung Lee ◽  
Jun Yeob Lee
Keyword(s):  
Molecular Structure ◽  
Electron Transport ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light ◽  
Host Materials ◽  
Transport Type

Electron transport type host materials for blue thermally activated delayed fluorescent (TADF) organic light-emitting diodes (OLEDs) were synthesized by engineering the electron withdrawing CN units in the molecular structure. The...

Trisdibenzofuran-derived electron transport type exciton blocking materials for improved efficiency and lifetime in blue phosphorescent organic light-emitting diodes

2018 ◽  
Vol 6 (2) ◽  
pp. 320-325 ◽  
Author(s):  
Ju Hui Yun ◽  
Yu Jin Kang ◽  
Si Hyun Han ◽  
Jun Yeob Lee
Keyword(s):  
Electron Transport ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Blue Phosphorescent ◽  
Transport Type

Two trisdibenzofuran-derived compounds, 4,2′:8′,4′′-terdibenzo[b,d]furan (TDBF) and [4,2′:8′,4′′-terdibenzo[b,d]furan]-6,6′′-dicarbonitrile (CNTDBF), were developed and investigated as electron transport type exciton blocking materials of blue phosphorescent organic light-emitting diodes (PhOLEDs).

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.

Highly Efficient and Stable Blue Organic Light-Emitting Diodes through Selective Quenching of Long-Living Triplet Exciton of Thermally Activated Delayed Fluorescence Emitter

2021 ◽  
Author(s):  
Won Jae Chung ◽  
Jun Yeob Lee
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Triplet Exciton ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light ◽  
Device Lifetime

In the organic light emitting diodes (OLEDs), the achievement of high efficiency and long device lifetime has been a goal due to the short device lifetime of the high efficiency...

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