Correlation between electroluminescence efficiency and stability in organic light-emitting devices under pulsed driving conditions

The effect of using pulsed current (pc) versus direct current (dc) driving mode on the electroluminescence (EL) efficiency and operational stability of tris(8-hydroxy-quinoline)aluminum (AlQ3)-based organic light-emitting devices are investigated. The result shows that the dependence of device stability on the driving mode correlates with the relative EL efficiency under the pc and dc driving modes.