High-performance blue phosphorescent and thermally activated delayed fluorescent solution-processed OLEDs based on exciplex host by modifying TCTA

摘要

High triplet energy of exciplex was achieved successfully by modifying conventional electron-donating (D) molecule TCTA. So, in this work, Ph-O-TCTA was designed and synthesized. Ph-O-TCTA: PhPO could efficiently form an exciplex. The solution-processed blue phosphorescent and thermally activated delayed fluorescent (TADF) OLEDs have been realized with the maximum current efficiencies above 30 cd A(-1) by employing exciplex Ph-O-TCTA: PhPO as a host.