Illustration from Scientific Research

The guest component suppresses the aggregation of the host binary blends, leading to increased LE H and CT H energies and thus increased VOC rad. In addition, suppressed aggregation of the host binary blend also reduces the ACQ effect, enhancing the luminescent efficiencies of both LE H and CT H and thus reducing the V nr. Black arrows in e describe the thermal equilibrium condition; the thickness of the coloured arrows represents the luminescent efficiencies of different states; the dashed lines represent the initial conditions of the host binary blend; and the solid lines represent the conditions of the host binary blend after adding the guest component.

DOI