Perovskite Solar Cells: High‐Performance and Stable Perovskite Solar Cells Based on Dopant‐Free Arylamine‐Substituted Copper(II) Phthalocyanine Hole‐Transporting Materials (Adv. Energy Mater. 26/2019)

In article number 1901019 Zong-Xiang Xu, Michele Muccini and co-workers report highly-efficient, low-cost, solution-processed perovskite solar cells, exhibiting remarkable environmental stability. The fabrication strategy relies on the rational design of the molecular structure of arylamine-substituted copper(II) phthalocyanine (CuPc) derivatives, which are used as dopant-free hole-transport materials. The resulting devices reach a power conversion efficiency of 19.7% and display enhanced long-term stability with respect to standard (doped) materials.