Controlling the Radiative Rate of Deep‐Blue Electrophosphorescent Organometallic Complexes by Singlet‐Triplet Gap Engineering

Abstract

The phosphorescence radiative rate of electroluminescent metal complexes is controlled by the singlet-triplet splitting (ΔEST). The figure shows how the chemical tailoring of ΔEST influences the radiative rate in a new class of deep-blue emitting complexes. This approach holds promise for the preparation of efficient deep-blue OLEDs (see inset) for solid state lighting applications.