Date：2016-04-27 |
Views：1626 |
OLED Information 20160427 |
Benzimidazobenzothiazole-based Bipolar Hosts to Harvest Nearly All of the Excitons from Blue Delayed Fluorescence and Phosphorescent Organic Light-Emitting Diodes
Article excerpt is from : Lin-Song Cui, Jong Uk Kim, Hiroko Nomura, Hajime Nakanotani, and Chihaya Adachi
Angew. Chem. Int. Ed. 2016, 55, 1 – 6
Two bipolar hosts (29Cz-BIDBT and 39Cz-BID-BT) with high triplet energy level were prepared for use in blue TADF and phosphorescent OLEDs. High EQEs (>20%) were realized in both blue TADF and phosphorescent OLEDs using the hosts. Thus, the rigid benzimidazobenzothiazole (BID-BT) core is effective as an acceptor building block to design bipolar host materials for high-efficiency TADF and
phosphorescent OLEDs.
