P‐132: Simultaneous Enhancement of Efficiency and Lifetime in Blue Triplet‐Triplet Annihilation Organic Light‐Emitting Diodes Using Double‐Emitting Layer Structure

Abstract

Efficiency and operation lifetime of blue triplet‐triplet annihilation organic light emitting diodes (TTA‐OLEDs) were enhanced by 16% and 297%, respectively, by employing double emitting layer structure. Blue OLED with maximum external quantum efficiency of 9.4% and half‐lifetime of 96,620 hours at initial luminance of 1,000 cd/m2 was achieved.