The yellow and white organic light-emitting devices(OLEDs) are fabricated by using phosphorescence sensitizing(E)-2-(2-(9-ethyl-9H-carbazol-3-yl)vinyl)quinolato-zinc(CzHQZn).The yellow OLED can be fabricated using CzHQZn sensitized by a phosphorescent material,fac tris(2-phenylpyridine)iridium[Ir(ppy)3],as a yellow light-emitting layer.When the emitting layer thickness is 18 nm,a series of yellow devices are fabricated,which have the maximum luminous efficiency of 3.26 cd/A-1 (at 10 V)and the maximum lumina...