Methylammonium lead halide

Methylammonium lead halides (MALHs) are solid compounds with perovskite structure and a chemical formula of [CH3NH3]+Pb2+(X−)3, where X = Cl, Br or I.

They have potential applications in solar cells,[2] lasers, light-emitting diodes, photodetectors, radiation detectors,[3][4] scintillator,[5] magneto-optical data storage[6] and hydrogen production.

This property is used in the growth of MALH single crystals and films from solution, using a mixture of [CH3NH3]X and PbX2 powders as the precursor.

[7] The resulting crystals are metastable and dissolve in the growth solution when cooled to room temperature.

[11] [12] MALHs have potential applications in solar cells, lasers,[13] light-emitting diodes, photodetectors, radiation detectors,[4] scintillator[5] and hydrogen production.

[CH 3 NH 3 ]PbX 3 crystal structure. [ 1 ]
Growth of a [CH 3 NH 3 ]PbI 3 single crystal in gamma-butyrolactone at 110 °C. The yellow color originates from the lead(II) iodide precursor. [ 7 ]
Growth of a [CH 3 NH 3 ]PbBr 3 single crystal in dimethylformamide at 80 °C. [ 7 ]