Table 1.

Effective masses of the electrons and holes in PEA₂SnI₄ and FASnI₃

	2D‐PEA2SnI4		3D‐FASnI3
	Line	m*	Line	m*
m h	Γ‐X	0.04	A1–X1	0.06
m e	Γ‐X	0.03	A1–X1	0.04