May 01, 2021 · 1. Introduction. Metal halide perovskite is a new type of semiconductor material, its general chemical formula is ABX 3, where the A position is occupied by a monovalent positive ion, which can be methylamine (CH 3 NH 3 +), formamidine (CH(NH 2) 2 +) or Cs +, or their mixtures.B-site ions are occupied by divalent metal ions (Pb 2+, Bi 2+, Sn 2+), and X-site ions …
Get Price