Improved color stability in white phosphorescent organic light-emitting diodes using charge confining structure without interlayer

摘要

Color stability of white organic light-emitting diodes was improved by using a charge confining device structure, which can confine charges at the center of the emitting layer. A red phosphorescent emitting layer was sandwiched between blue phosphorescent emitting layers and there was little change of color coordinate from 100 to 10 000 cd/m~2.