Hyperfluorescence circularly polarized OLEDs consisting of chiral TADF sensitizers and achiral multi-resonance emitters.

ABSTRACT: Developing circularly polarized organic light-emitting diodes (CP-OLEDs) that simultaneously achieve narrow-spectrum emission and high electroluminescence (EL) efficiency remains a formidable challenge. This work prepares two pairs of efficient circularly polarized thermally activated delayed fluorescence (CP-TADF) materials, featuring high photoluminescence quantum yields, short delayed fluorescence lifetimes, good luminescence dissymmetry factors and large horizontal dipole ratios. They can function as emitters for efficient sky-blue CP-OLEDs, providing high maximum external quantum efficiencies (η_ext,maxs) (33.8%) and good EL dissymmetry factors (g_ELs) (-2.64 × 10^-3). More importantly, they can work as sensitizers for achiral multi-resonance (MR) TADF em

SUBMITTER: Chen L 

PROVIDER: S-EPMC11829008 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature