Acceptor modification of diindolocarbazole embedded multiple-resonance emitters for efficient narrowband deep-blue OLEDs with CIE_y ≤ 0.08 and alleviated efficiency roll-off

Abstract

Diindolocarbazole embedded multiple-resonance emitters have shown their unique advantages for narrowband deep-blue organic lighting emitting diodes (OLEDs). However, the severe efficiency roll-off still challenges their further applications. Herein, two efficient...

A diphenylphosphine oxide decorated multi-resonance TADF emitter for narrowband green electroluminescence with an EQE of 32.4%

“…Recently, the DPPO group was introduced into MR-TADF molecules to improve the optoelectronic properties of the emitters by Xu and Wong, respectively. 24,25 However, these studies primarily focus on emitters in the blue region, and there have been no reports of green emitters with the DPPO group. 26 In this study, we have utilized the DPPO group to develop a new green MR-TADF emitter, PhCzBN-PO (Fig.…”