High efficiency, color stability, and stable efficiency roll off in three color hybrid white organic light emitting diodes

作者：Yook Kyoung Soo; Jeon Soon Ok; Joo Chul Woong; Leea Jun Yeob^*

来源：Applied Physics Letters, 2008, 93(7): 073302.

DOI：10.1063/1.2969821

High efficiency, good color stability, and stable efficiency roll off were achieved in three color white organic light emitting diodes by developing a device architecture with red and green phosphorescent materials codoped in a mixed host emitting structure. A fluorescent blue material was used in a blue emitting layer and a mixed interlayer structure was applied. A high quantum efficiency of 9.7% was obtained and color coordinate of (0.40, 0.40) was kept constant up to luminance of 10 000 cd/m(2). In addition, efficiency decrease at 10 000 cd/m(2) was only 2% of the maximum quantum efficiency.

• 出版日期2008-8-18