P‐172: Novel Sterically Bulky Hole‐Transporters Realizing Enhanced Operation Lifetime in TADF OLEDs

We developed a series of sterically bulky hexaphenylbenzene‐based hole‐transporters named 4DBTHPB and 4DBFHPB with deep Ip of –5.8 eV and high ET of 2.7 eV. By using 4DBFHPB as a hole‐transporter, we realized a highly efficient and stable green TADF OLED exhibiting maximum external quantum efficienc...

Full description

Saved in:
Bibliographic Details
Published in:SID International Symposium Digest of technical papers 2019-06, Vol.50 (1), p.1884-1885
Main Authors: Sasabe, Hisahiro, Kamata, Takahiro, Ito, Nozomi, Igarashi, Masahiro, Kido, Junji
Format: Article
Language:English
Subjects:
Diodes
Donor-acceptor system
Hole-transporter
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 developed a series of sterically bulky hexaphenylbenzene‐based hole‐transporters named 4DBTHPB and 4DBFHPB with deep Ip of –5.8 eV and high ET of 2.7 eV. By using 4DBFHPB as a hole‐transporter, we realized a highly efficient and stable green TADF OLED exhibiting maximum external quantum efficiency of 19.4 % and operation lifetime at 50 % (LT50) of approximately 24,000 hrs at an initial luminance of 1000 cd m–2. Further, we investigated the effect of these hole‐transporters in sky‐blue TADF OLEDs.
ISSN:0097-966X
2168-0159
DOI:10.1002/sdtp.13329