Improvement Luminance of Flexible Organic Light-Emitting Diode (FOLED) by Alignment Thickness Rate

Abstract

In this investigation, the effect of the thickness in the flexible organic light-emitting diode (FOLED) is studied. The larger luminance and luminance efficiency, 1160 cd/m2 and 2.71 lm/W, can be obtained at NPB thickness of 45 nm with the Alq3 thickness of 35 nm. The luminance dramatically rises when the Alq3 thickness is 45 nm at bias voltage of 19 V. The highest luminance is up to 2190 cd/m2. The extreme characteristic of FOLED may be useful to an organic electrically pumped laser.