Photovoltaic cells printed on sheets are n’t news , nor are LEDs and ultrathin Li batteries . What ’s tidings is a compounding of the three which can help give light to 1.5 billion people who live in destitute area without approach to electricity .
Frederik Krebs came up with this combination of solar panels and LED lights which , while by all odds a work - in - progress , could bring chinchy lighting to some of the world ’s poorest region . I call the lamps a work - in - procession because despite being durable enough to last several years , they move at a bare 1 % efficiency . But with the expect final price of $ 7 a small-arm , they ’re full of life - changing potential , despite that low efficiency .
Some image of the lamp are currently being quiz in Zambia . As see in the picture , the solar dialog box are left laying 2-dimensional during the daytime and then roll up ( and secured with gingersnap - button ) into a cone - mold lamp . I ’m definitely look onward to seeing the results of the prototype tests and a terminal product , because no one should go without artificially fire up night . [ IEEE SpectrumviaPop Sci ]
Solar power
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