There are mixed organic/inorganic perovskite solar materials as well as fully inorganic ones. The ones with an organic component were developed earlier and they

There are mixed organic/inorganic perovskite solar materials as well as fully inorganic ones. The ones with an organic component were developed earlier and they show higher efficiency than all-inorganic ones. It's unfortunate that all-inorganic perovskite materials have not attained the same efficiency, because they do exhibit more stable performance. Here's a Department of Energy overview of organic/inorganic perovskite materials: https://www.energy.gov/eere/solar/perovskite-solar-cells https://www.energy.gov/eere/solar/perovskite-solar-cells Here's a recent advance in all-inorganic perovskite PV cells from a Korean group: https://www.pv-magazine.com/2021/10/22/ambient-processed-inorganic-perovskite-solar-cells-at-19-75-efficiency/ https://www.pv-magazine.com/2021/10/22/ambient-processed-ino...