Journal Article charge separation charge recombination phosphorescence afterglow electroluminescence energy transfer exciplex exciplexes graphene-like conjugated molecule hole-selective contact intermolecular interactions inverted perovskite solar cell light-emitting diodes long-persistent luminescence long-persistent luminescence (LPL) long‐persistent luminescence nonradiative decay operational stability organic light-emitting diodes organic long-persistent luminescence organic long-persistent luminescence (OLPL) organic optoelectronics organic semiconductors solar module thermally activated delayed fluorescence (TADF)