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Solar-powered mobile telephones and electronic billboards that generate their own energy could be available soon, scientists say.
The new technology should meet the rising power demands of mobile phones and cut carbon emissions from businesses advertising on electronic boards.
Two patents from Motorola and Nokia, are reported in New Scientist magazine. Motorola has previously attempted to fit a solar panel behind the phone’s display screen. This was not successful as the display absorbed most of the light.
Now, Zili Li, Motorola’s engineer, has added colour filters that allows specific wave-lengths of light to pass straight through, enabling the phone to power itself.
The patent from Nokia uses nanoparticles that generate energy when hit by light.
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