Figure 4. Temperature dependence of the charge carrier mobility limited by acoustic phonon and charged impurity scatterings.

(a) Cubic CH₃NH₃PbI₃ in the [100] direction. (b) Tetragonal CH₃NH₃PbI₃ in the [001] direction. The free carrier density was taken as 10¹⁴ cm⁻³ for both electrons and holes, and the charged impurity density was set to 10¹⁶, 10¹⁷, and 10¹⁸ cm⁻³ respectively. The total mobility is shown in black, and that limited by acoustic phonon and charged impurity scatterings is shown in red and blue respectively.