An
Exciplex Host for Deep-Blue Phosphorescent Organic Light-Emitting
Diodes
Hyoungcheol Lim
Hyun Shin
Kwon-Hyeon Kim
Seung-Jun Yoo
Jin-Suk Huh
Jang-Joo Kim
10.1021/acsami.7b10914.s001
https://acs.figshare.com/articles/journal_contribution/An_Exciplex_Host_for_Deep-Blue_Phosphorescent_Organic_Light-Emitting_Diodes/5510335
The use of exciplex
hosts is attractive for high-performance phosphorescent organic light-emitting
diodes (PhOLEDs) and thermally activated delayed fluorescence OLEDs,
which have high external quantum efficiency, low driving voltage,
and low efficiency roll-off. However, exciplex hosts for deep-blue
OLEDs have not yet been reported because of the difficulties in identifying
suitable molecules. Here, we report a deep-blue-emitting exciplex
system with an exciplex energy of 3.0 eV. It is composed of a carbazole-based
hole-transporting material (mCP) and a phosphine-oxide-based electron-transporting
material (BM-A10). The blue PhOLEDs exhibited maximum external quantum
efficiency of 24% with CIE coordinates of (0.15, 0.21) and longer
lifetime than the single host devices.
2017-10-02 00:00:00
CIE
phosphine-oxide-based electron-transporting material
Deep-Blue Phosphorescent Organic Light-Emitting Diodes
carbazole-based hole-transporting material
BM-A
OLED
exciplex hosts
deep-blue-emitting exciplex system
PhOLED
quantum efficiency