Exploring the average and local structure in Ge-based 2D perovskites

The present proposal is aimed at revealing the average and local structure properties and modifications of a series of lead-free 2D metal halide perovskites of general formula (PhBz)MAn–1GenX3n+1 (n = 1, 2 and 3) structures (PhBz=phenylbenzyl ammonium; MA=methylammonium) having a different halide (I, Br) as a function of temperature. Such experiment will help in understanding the effect on the average and local structure of the increasing number of n in the Ruddlesden-Popper series and to correlate these structural data to the functional properties (optical, photocatalytic and water-resistance).