Date：2016-08-19 |
Views：1938 |
OLED Information 20160819 Novel Hole-Transporting Materials with High Triplet Energy for Highly Efficient and Stable Organic Light-Emitting Diodes |
Novel Hole-Transporting Materials with High Triplet Energy for Highly Efficient and Stable Organic Light-Emitting Diodes
Article excerpt is from: irohiko Fukagawa, Takahisa Shimizu, Hiroyuki Kawano, Shota Yui, Toshinobu Shinnai, rata Iwai, Kazuhiko Tsuchiya and Toshihiro Yamamoto
The Journal of Physical Chemistry. C . 2016, in press
Novel hole transporting materials, namely 4DBTPBD, 4DBTP3Q and 4DBFP3Q with good hole transportability, high ET and high operational stability were demonstrated. The optimized green PHOLED using 4DBFP3Q exhibited high efficiency and high stability. EQE of over 20% was obtained with the maximum current efficiency of 81 cd/A.
The LT50 of the PHOLED using 4DBFP3Q was about 15 times longer than that of the PHOLED using 3DTAPBP, and the estimated LT50 of the optimized PHOLED was over 10,000 h with an initial luminance of 1,000 cd /m2.
The synthesized HTMs was also demonstrated to be effective for improving the efficiency of green TADF OLEDs, as well as green PHOLEDs.
