Fabrication of 5,6,11,12 -tetraphenyl-naphthacene doped 4-bis(2,2-diphenylvinyl)-1,1-biphenyl white organic light-emitting device

Using a blue emitting material, 4-bis(2,2-diphenylvinyl)-1,1-biphenyl and orange dopant 5,6,11,12-tetraphenyl-naphthacene, white organic light-emitting devices have been fabricated. An insignificant variation in Commission Internationale de l'Eclairage color index with the applied voltage is reported. Transient electroluminescence measurements show a delay time in the microsecond range (<26 μs). The authors propose a device configuration for the white light emission, having a color stability and low delay time.