Perovskite Solar Cells: Extending the Photovoltaic Response of Perovskite Solar Cells into the Near‐Infrared with a Narrow‐Bandgap Organic Semiconductor (Adv. Mater. 49/2019)

In article number 1904494, Yueh-Lin Loo and co-workers demonstrate a near-infrared-harvesting perovskite solar cell with enhanced power-conversion efficiency as high as 21.6% and improved stability, with an operational half-life of 1900 h, by directly incorporating a multifunctional organic semiconductor that both extends light absorption and passivates defects in the perovskite active layers. This work provides a promising approach to prepare highly efficient and stable perovskites solar cells and opens a new application field for the rational design of narrow-bandgap organic semiconductors.