According to Wikipedia [1]: "Perovskite materials, such as methylammonium lead halides and all-inorganic cesium lead halide, are cheap to produce and simple to

According to Wikipedia [1]: "Perovskite materials, such as methylammonium lead halides and all-inorganic cesium lead halide, are cheap to produce and simple to manufacture." [1] https://en.wikipedia.org/wiki/Perovskite_solar_cell https://en.wikipedia.org/wiki/Perovskite_solar_cell