Optical materials

Multiresonant luminophores based on the effect of thermally activated delayed fluorescence for the 3rd and 4th generation organic light-emitting diodes

D. I. Dominskii^ab, O. G. Kharlanov^a, D. Yu. Parashchuk<sup>a

a</sup> Lomonosov Moscow State University, Faculty of Physics
^b N. S. Enikolopov Institute of Synthetic Polymer Materials RAS, Moscow, Russia

Abstract: Here we present a review of the latest advances in the field of the most promising luminophores exhibiting the delayed fluorescence effect in organic light-emitting diodes – multi-resonant luminophores, which are distinguished from other types of organic luminophores by their narrow emission bandwidth. A brief overview is given on the generations of organic light-emitting diodes, the principles of operation of multi-resonant luminophores, features of their structure and their photophysical and luminescent properties are outlined. Advances and challenges in the field of multi-resonant luminophores are analyzed and approaches to their molecular design are discussed.

Keywords: organic semiconductor, organic light-emitting diode, OLED, thermally activated delayed fluorescence, TADF, fluorescence, multi-resonant, external quantum efficiency.

Received: 07.07.2024
Revised: 07.07.2024
Accepted: 29.07.2024

DOI: 10.61011/OS.2024.08.59031.6867-24

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