An international team of researchers has successfully built the first high-performance tandem solar cell that swaps out a scarce, expensive metal for one that is abundant and costs 1% as much.

An international team of researchers has built the first high-performance, commercial-size tandem solar cell that doesn't rely on the scarce and expensive metal indium. The…

An international team of researchers has successfully built the first high-performance tandem solar cell that swaps out a scarce, expensive metal for one that is abundant and…