Enhanced Stability of Perovskite Solar Cells through Corrosion‐Free Pyridine Derivatives in Hole‐Transporting Materials

Abstract

The molecular structure of pyridine derivatives is critical to perovskite solar cell performance, especially stability. Most of the pyridine additives easily form complexes with perovskite. A new pyridine additive with a long alkyl chain substituted at its o-position does not corrode perovskite. The stability of devices containing this additive is the highest among the investigated cells.