33‐4: Invited Paper: A Chemical Structure Approach Enhancing Light Outcoupling of Dopant OLEDs and Internal Quantum Efficiency of Non‐Dopant OLEDs Having Bluish TADF Emitters

Dopant and non‐dopant OLEDs were fabricated for testing four TADF emitters, having EL of blue to greenish blue color. The tetraphenylbenzene (4Ph)‐containing emitters have been demonstrated having a higher light outcoupling efficiency for dopant devices and a superior IQE for the non‐dopant devices.