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Researcher at the London Centre for Nanotechnology Arman Ahnood thinks today’s OLED screens waste energy and there’s room for improvements. The extra light phone displays emit could be reused by putting a thin-film PV cells around the display’s edges.
Here’s the idea:
The photovoltaic (PV) cell takes advantage of the smartphone display’s large footprint. In a typical organic light-emitting diode (OLED) display, only about 36 percent of the light generated is projected out of the front of the screen, says Ahnood. Much of it escapes at the edges of the OLED, where it is useless.
The system efficiency averages at about 11%, with a peak efficiency of 18%. This in turn can generate as much as 165 microwatts per square centimeter under the right lighting conditions, equating to a maximum power output of 5 milliwatts for a typical 3.7-inch smartphone screen. According to Ahnood, this is “quite useful power,” though we guess it will give you just enough juice to send a couple of dozen texts more.
In any case, we like the idea of making our phones more power efficient and are looking forward to a day when our smartphones won’t have to be charged every day even with strong Wi-Fi usage…
[Via: Engadget]
About The Author
Dusan Belic
Dusan has been using smartphones since their introduction and is now following the latest trends in the industry. The "convergence" is what he's most excited about, and writing about it is the next logical thing to do. He thinks that using a smartphone is what everyone who cares about their time should do. In addition to his interests in mobile phones, Dusan also loves to experiment with the latest web and mobile 2.0 services. The idea of accessing and managing your information from any device no matter where you are simply amazes him. Whether it's an online to-do list, note taking service or a video sharing social network, he's there to try it out. He admits though, he's still searching for the ultimate web-based organizational tool, which "sings" perfectly with the mobile PIM application. Dusan used to run SymbianWatch.com which later became part of IntoMobile. He lives in Serbia, South-East Europe, from where he edits the site on a daily basis.
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