A chiral co-assembled exciplex host achieved extremely outstanding narrowband circularly polarized electroluminescence.

ABSTRACT: High-performance circularly polarized organic light-emitting diodes (CP-OLEDs) that can simultaneously achieve narrowband emission and high electroluminescence asymmetry factor (g _EL) values remain a formidable challenge. In this study, a simple strategy utilizing a co-assembled chiral exciplex as a host material was employed to fabricate high-performance CP-OLEDs. The exciplex was constructed from chiral acceptor enantiomers (R/S-TRZ) and an achiral liquid-crystalline donor (CzTPA). Upon thermal annealing, the resulting co-assembled films exhibited circularly polarized luminescence (CPL) with a luminescence asymmetry factor (g _lum) up to 0.58. Introducing the achiral green multiple-resonance thermally activated delayed fluorescence (MR-TAD

SUBMITTER: Liu C 

PROVIDER: S-EPMC12903767 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature