Calculated effective mass, carrier mobility, and relaxation time of MASnBr₃ and BAMASn₂Br₇ respectively.

System				C (N m−1)	μ e (cm2 V−1 s−1)	μ h (cm2 V−1 s−1)	τ e (fs)	τ h (fs)
MASnBr3	X	0.122	0.0578	19.17	248.0	181.6	30.25	10.49
	Y	0.361	0.0633	19.17	404.2	800	146	50.64
BAMASn2Br7	X	0.160	0.336	7.97	557	124.1	89.34	41.69
	Z	0.146	0.320	7.97	367.4	779	53.64	249