Date：2017-07-14 |
Views：1792 |
【Academic writing Sharing 20170714】 |
Aromatic Imide Based Thermally Activated Delayed Fluorescence Materials for Highly Efficient Organic Light Emitting Diodes
Article excerpt is from: Meng Li, Yanwei Liu, Ruihong Duan, Xiaofang Wei, Yuanping Yi, Ying Wang, and Chuan-Feng Chen
Angewandte International Edition, in press, 2017
A new kind of aromatic imide-based thermally activated delayed fluorescence (TADF) materials with twisted donor-acceptordonor skeleton were efficiently synthesized, which exhibited excellent thermal stability and high photoluminescence quantum yields. The small ΔEST (< 0.1 eV) along with the obvious temperature dependent
delayed component of transient photoluminescence (PL) spectra demonstrated their excellent TADF properties. Moreover, the performances of organic light emitting diodes using TADF materials AI-Cz and AI-TBCz as dopants were particularly outstanding with the external quantum efficiencies up to 23.2 % and 21.1 %, respectively.
