Date：2016-01-26 |
Views：1535 |
OLED Information 20160126 |
Light-blue thermally activated delayed fluorescent emitters realizing a high external quantum efficiency of 25% and unprecedented low drive voltages in OLEDs
Article excerpt is from : Ryutaro Komatsu, Hisahiro Sasabe, Yuki Seino, Kohei Nakaoa and Junji Kido
J. Mater. Chem. C, 2016, in press.
A series of TADF emitters, called Ac-RPM were developed by introducing a phenylacridine moiety into the 4,6-position of the pyrimidine core to induce a twisted structure leading to a high photoluminescence quantum yield of ~80%, and a small singlet and triplet excited energy difference of <0.20 eV. The optimized device realized an Ƞp of 62 lm/W, a high external quantum efficiency of 25%, light-blue
Emissions with the CIE chromaticity coordinates of (0.19, 0.37) and a low turn-on voltage of <3.0 V.
