"OPTICS: Magnetic doping brightens OLEDs"

Efficiency is the name of the game for flat-panel display technologies. This is especially important for extending the battery life of cellphones, digital cameras, personal digital assistants and other portable devices that use organic LED displays. Now, Oak Ridge National Laboratory (ORNL) claims it can make OLEDs 30 percent more efficient by doping them with magnetic nanoparticles. As a bonus, the introduction of magnetism into the OLED material enables brightness to be controlled without the addition of electrical contacts.
Text: http://www.eetimes.com/showArticle.jhtml?articleID=201001556