Increasing the amount of electricity a solar panel produces is one of the most effective ways to reduce the cost of solar power.
MIT’s Technology Review reports on a new $2.4 million project funded by the U.S. Advanced Research Projects Agency for Energy aims to greatly increase the amount of sunlight that becomes electricity.
Harry Atwater, a professor of applied physics and materials science at Caltech, is working on cells to sort sunlight into eight to 10 different colors (a rainbow!) and direct those to a second layer that contains an array of solar cells matched to each color. Light is absorbed more efficiently, and more energy is converted to electricity, rather ...read more