OLEDs with these emitters show a maximum external quantum efficiencies (EQEmax) of 2.3% in both cases; (2) A donor-acceptor-donor emitter, DPTZN, in which naphthalene acts as the acceptor and that emits via room-temperature phosphorescence (RTP). This molecule shows a remarkable enhancement of the RTP when blended with TRZ-BIM at 10 wt% doping, where the ΦPL is 38% compared to only 3% in the neat film. A device based on this blend showed yellow emission (λEL = 570 nm) with an EQEmax of 11.5%; notably, the mechanism underpinning the RTP enhancement was not elucidated by the authors; (3) Finally, a donor-bridge-acceptor TADF emitter, BTaz-Na-PXZ, which is to the best of our knowledge the first known example of a naphthalene-containing compound showing TADF. This compound exhibits weak, blue emission (λPL = 473 nm) as the FPL = 18% as a 1 wt% doped film in Zeonex; no devices were fabricated. In addition, two further reports document the use of naphthalene-containing compounds as materials used in OLED: (1) a fluorescent emitter with the naphthalene moiety attached to the periphery of the structure that likely is not involved in the electronic transition; 13 and (2) two naphthalene-containing molecules used as the charge recombination layer in white OLEDs (WOLEDs), which likewise are not involved directly in emission. Here, we demonstrate the viability of naphthalene-based compounds as emitters in OLEDs where the naphthalene acts as the electron-accepting moiety in a donor-acceptor-donor compound.