Solar Cells: Planar CH 3 NH 3 PbI 3 Perovskite Solar Cells with Constant 17.2% Average Power Conversion Efficiency Irrespective of the Scan Rate (Adv. Mater. 22/2015)

Abstract

An HI additive enables single-crystalline perovskite thin-films to be formed and reduces trap density, thereby reducing hysteresis and enhancing device performance. S. H. Im and co-workers develop highly efficient planar CH3 NH3 PbI3 perovskite hybrid solar cells with constant average power conversion efficiency irrespective of scan rate, as described on page 3424.