Efficient green phosphorescent top emitting organic electroluminescent(EL) devices with a double metal mirror Fabry-perót microcavity structure are constructed.The configuration of device is ITO/Ag/NPB/Ir(ppy)3(5 wt%):TPBI/TPBI/LiF/Al.It is found that the device performance is improved greatly.A maximum current efficiency of 18 cd/A is obtained.The EL lifetime is decreased from 7.6 μs to 7.1 μs by the F-P cavity,which relieves the decrease of current efficiency with the increase of current densi...