The exploding number of smartphones, laptops, and flat-screen TVs means more energy gets consumed. Universal Display of Ewing, N.J., believes it has a technology that will lower energy usage in those devices. Its organic light-emitting diode (OLED) screens use phosphorescent color materials that are brighter than the LCD screens now in use and are as much as four times more energyefficient. Universal Display is negotiating a new contract to supply its technology to Samsung for its Galaxy smartphone (and other devices).
Says John Segrich, manager of the Gabelli SRI Green Fund: "We think OLEDs will replace LCD screens, and the technology will take off rapidly." Over the past year the stock has risen from $5 a share to $27, but revenue has been nearly doubling annually.