Highly efficient green top-emitting organic light-emitting devices with metal electrode structure
In this work, the electrical and optical characteristics of top-emitting organic light-emitting device (TEOLED) using metal Ag as anode with different thicknesses have been investigated. The emission peak of fabricated TEOLED is 512nm for a full-width at half-maximum (FWHM) of 48nm in forward direction. The TEOLED turns on at 3V with luminance of 2.38cd/m2 and reaches 16,300cd/m2 at 9V. The maximum of current efficiency is 5.2cd/A at 7V, corresponding to the external quantum efficiency of 1.72%.
teoled external quantum efficiency microcavity emission enhancement factor