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Arman Ahnood teases OLED display with solar cells, idealizes the self-sustaining smartphone
Plenty of effort is going into improving smartphone battery life, but only a few individuals are delving into radical realms to achieve the goal. Take for example, Arman Ahnood, a researcher at the London Centre for Nanotechnology, whose latest prototype uses solar cells to capture wasted energy from OLEDs. Similar to Wysips (which uses only ambient light), and equipment from UCLA (designed for LCDs), each project faces the unenviable task of making the smartphone a self-sustaining piece of gear.
Ahnood's handiwork relies on an array of solar cells that surround and sit beneath the phone's display. Currently, the system averages 11 percent efficiency in its energy capture, with a peak efficiency of 18 percent. Naturally, there are gains to be made. Of the light generated from OLEDs, Ahnood approximates that only 36 percent is actually projected outward. Critically speaking, this also suggests that similar power savings could be achieved with dimmer, more efficient displays, but we'll let that slide. As it stands, Ahnood's system is able to generate approximately five milliwatts of additional power, given a screen size of 3.7-inches. It's hardly sustainable, but if the creation lets us squeeze in a few more text messages on Friday night, we'll take it.

Arman Ahnood teases OLED display with solar cells, idealizes the self-sustaining smartphone originally appeared on Engadget on Fri, 20 Jan 2012 01:03:00 EDT. Please see our terms for use of feeds.

 Arman Ahnood teases OLED display with solar cells, idealizes the self-sustaining smartphoneExtremeTech    sourceIEEE Spectrum     

Read more http://www.engadget.com/2012/01/20/oled-display-with-integrated-solar-cells/

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