Table 1. Elastic constant, deformation potential, average relaxation time, mean free path, and mobility of holes and electrons for cubic and tetragonal CH₃NH₃PbI₃.

Axis		Cubic			Tetragonal
		a	b	c	a	b	c
Cii (Gpa)		7.5	21.5	22.1	19.3	19.2	10.3
E1 (eV)	e	4.9	2.0	2.0	1.1	0.4	4.3
	h	2.2	0.6	0.6	1.5	1.2	1.3
μ(cm2 V−1 s−1)	e	800	572	572	2554	2494	1876
	h	1432	2156	2157	7176	7310	4412
τ(ps)	e	0.12			0.33
	h	0.67			1.87
l (nm)	e	21.6			67.3
	h	90.8			284