Retraction: “Effect of aluminum cathodes prepared by ion-beam-assisted deposition in organic light-emitting devices” [Appl. Phys. Lett. 85, 1051 (2004)]
Compared to the PtOO7-based system, the greater EQE of the PtON7-based system is mainly governed by the stronger energy transfer efficiency (ηEET); thus, it is necessary to evaluate ηEET from hosts to guests for the rational design of OLEDs.