P2OLEDs

UniversalP2OLED™ printable, phosphorescent OLED materials and technology are under development to combine the high-efficiency of the Company’s UniversalPHOLED™ technology with low-cost printing equipment. Solution processing techniques, like ink-jet printing, have the potential to offer a low-cost route to large-area OLED display fabrication.

Universal Display continues to make significant progress in the development of its UniversalP2OLED™ printable, phosphorescent OLED materials and technology for use with solution-based manufacturing processes.

Reported in a joint paper with Seiko Epson Corporation (Epson) at the Society for Information Display’s 2008 Symposium in Los Angeles, California, these advances are, in part, the result of a productive joint development program.  Demonstrating the high luminous efficiency of PHOLED technology, the team made significant progress in extending the operating lifetimes of its red and green material P2OLED systems in spin-coated, bottom-emission devices.  The following data is based on using a full set of OLED materials developed by Universal Display.   

The company has also demonstrated significant advances in the performance of its red and green P2OLEDs fabricated by ink-jet printing.  These included a red P2OLED with CIE (0.67, 0.33), an efficiency of 10 candela per ampere (cd/A) and an operating lifetime of 20,000 hours, to 50% of initial luminance of 1,000 nits, and a green P2OLED with CIE (0.33, 0.62), an efficiency of 34 cd/A and an operating lifetime of 25,000 hours.  While most solution-processed OLED data reported to date has been obtained through the use of spin coating techniques, achieving comparable performance using ink-jet printing has been a significant challenge.  The advances demonstrated here with ink-jet printing are an important milestone toward commercialization.