light emitting diodes

  • Utah researchers suggest OLED efficiency not so hot


    [Image credit: University of Utah]
    The LEDs you see in use all over these days — in traffic lights, flashlights, and all over your computer — are able to convert somewhere between 50 and 70 percent of the energy passed to them into light. This high efficiency makes them ideal for those purposes mentioned, but high costs have prevented them from replacing other types of… Read More