Scientists from Stanford University, Shanhui Fan along with Masashi Ono have demonstrated for the first time that it is possible to produce a measurable amount of electricity in an infrared photodiode from the coldness of the universe.The infrared semiconductor uses the temperature difference between Space and Earth to produce the electricity. The study was published in a journal named Applied Physics Letters. The new device has generated about 64 nanowatts per square meter. According to the theoretical calculations, the device can generate almost 4 watts per square meter, roughly one million times what practically generated. In the new technology, the negative illumination effect allows electrical energy to be harvested as heat leaves a surface.
