Rajagopal, Adharsh Highly Efficient Perovskite-Perovskite Tandem Solar Cells Reaching 80% of the Theoretical Limit in Photovoltage. [electronic resource] - Advanced materials (Deerfield Beach, Fla.) Sep 2017 Publication Type: Journal Article ISSN: 1521-4095 Standard No.: 10.1002/adma.201702140 doi