The solar constant is defined as the irradiance of the sun on the outer atmosphere of the earth when the distance between the earth and sun is 1 AU (the mean earth-sun distance of 149,597,890km). The ...

Solar energy could be made cheaper if solar cells could be coaxed to generate more power. A huge gain in this direction has been made by a team of chemists that has found an ingenious way to make ...

Solar cells are made from semiconductors whose ability to respond to light is determined by their band gaps (energy gaps). Different colors have different energies, and no single semiconductor has a ...