P‐174: Improved Operation Lifetime of Highly Efficient Sky‐Blue TADF OLEDs using Hexaphenylbenzene‐based Hole‐transporters

We successfully develped highly efficient 5TCzBN‐based sky‐blue TADF OLEDs exhibiting maximum external quantum efficiency (EQE) of 21.6 % and operation lifetime at 50 % (LT50) of approximately 1,800 hours at an initial luminance of 500 cd m–2. Here, novel hexaphenylbenzene‐based sterically bulky hol...

Full description

Saved in:
Bibliographic Details
Published in:SID International Symposium Digest of technical papers 2019-06, Vol.50 (1), p.1889-1890
Main Authors: Ito, Nozomi, Kamata, Takahiro, Sasabe, Hisahiro, Igarashi, Masahiro, Kido, Junji
Format: Article
Language:English
Subjects:
Diodes
donor-acceptor system
Holetransporter
Organic light emitting diodes
organic light-emitting device
photochemistry
Quantum efficiency
solid-state emission
thermally activated delayed fluorescence
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We successfully develped highly efficient 5TCzBN‐based sky‐blue TADF OLEDs exhibiting maximum external quantum efficiency (EQE) of 21.6 % and operation lifetime at 50 % (LT50) of approximately 1,800 hours at an initial luminance of 500 cd m–2. Here, novel hexaphenylbenzene‐based sterically bulky hole‐transporters named 4DBTHPB and 4DBFHPB with deep Ip of –5.8 eV and high ET of 2.7 eV were used to improve the operation lifetime.
ISSN:0097-966X
2168-0159
DOI:10.1002/sdtp.13331