Quantum dots boost power solar cells

 作者:万荠     |      日期:2019-03-09 02:14:01
By David Robson PEPPERING solar cells with quantum dots could be the next step towards cheaper solar power, allowing basic devices to generate more electricity than ever before. The new technique borrows a trick from photosynthesis to convert light into electricity. Like many solar cells, the new design consists of several layers of semiconductors, called a junction. The bottom layer is doped with impurities that provide excess free-moving electrons,