Enhancing operational stability of OLEDs based on subatomic modified thermally activated delayed fluorescence compounds.

ABSTRACT: The realization of operationally stable blue organic light-emitting diodes is a challenging issue across the field. While device optimization has been a focus to effectively prolong device lifetime, strategies based on molecular engineering of chemical structures, particularly at the subatomic level, remains little. Herein, we explore the effect of targeted deuteration on donor and/or acceptor units of thermally activated delayed fluorescence emitters and investigate the structure-property relationship between intrinsic molecular stability, based on isotopic effect, and device operational stability. We show that the deuteration of the acceptor unit is critical to enhance the photostability of thermally activated delayed fluorescence compounds and hence device lifetime in addition to that o

SUBMITTER: Jung S 

PROVIDER: S-EPMC10576749 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature