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Illumination & Displays

Light-blue PHOLED material system

Universal Display Corporation

Universal Display Corporation recently unveiled a new light-blue phosphorescent OLED emitter system. This new UniversalPHOLED emitter system offers the potential for significantly reduced power consumption and extended operational lifetime in OLED devices.

The use of this new light-blue emitter system may provide performance benefits for both display and lighting applications. For lighting applications, it may accelerate the introduction of a variety of initial commercial products where high-efficacy, warm-white emission is important. The new system also offers key performance advances for displays when used in Universal Display's new four sub-pixel format.

Universal Display's new light-blue emitter system offers CIE coordinates of (0.17, 0.37) and a peak wavelength of 472 nm. It also provides a luminous efficiency of > 45 candelas per Ampere, corresponding to > 20% external quantum efficiency at 1,000 candelas per square meter (cd/m2). Under accelerated test conditions, this new emitter system demonstrates an operating lifetime of approximately 9,000 hours, to 50% of an initial luminance of 1,000 cd/m2. These performance gains are significant, representing a 30% increase in luminous efficiency and an almost 100% increase in operating lifetime, as compared to Universal Display's earlier generation light-blue PHOLED emitter system.