Developed by scientists in Saudi Arabia, the perovskite cell was able to retain over 95% of its initial efficiency after 1,000 hours at damp-heat test conditions. The cell was fabricated with a substrate made of glass and indium tin oxide (ITO), 2D layers, a 3D perovskite layer, an electron-selective layer, a buffer layer based on bathocuproine (BCP), and silver metal contact.
