| Initial crystal system | orthorhombic |
| Final crystal system | tetragonal |
| Initial space group | Pna2_1 |
| Final space group | I4/mcm |
| Direction | Unknown |
| Phase transition temperature | 162.2 K |
Hysteresis: NIL
| Initial crystal system | tetragonal |
| Final crystal system | cubic |
| Initial space group | I4/mcm |
| Final space group | Pm3m |
| Direction | Unknown |
| Phase transition temperature | 327.4 K |
Hysteresis: NIL
Starting materials: lead (II) acetate, CH3NH3+ (by adding a 40% solution of CH3NH2 in water), concentrated HI
Product: Black MAPbI3 crystals
Description: CH3NH3PbI3 was synthesized from lead (II) acetate and CH3NH3+ dissolved in a concentrated HI solution. The aqueous solution was cooled from l00°C to 40°C to obtain the black crystals.
Method: Temperature-dependent Guinier-Simon photograph
Description: No method specified. Refer to Page 6374 Table I.