Improved charge extraction in inverted perovskite solar cells with dual-site-binding ligands

Improved charge extraction in inverted perovskite solar cells with dual-site-binding ligands Inverted (pin) perovskite solar cells (PSCs) afford improved operating stability in comparison to their nip counterparts but have lagged in power conversion efficiency (PCE). The energetic losses responsible for this PCE deficit in pin PSCs occur primarily at the interfaces between the perovskite and the charge-transport layers. Additive and surface treatments that use passivating ligands usually bind t...