Influence of the composition of glass substrates on CH3NH3PbI3 films properties deposited by Spin-Coating

The influence of the composition of silicate glass substrates on the properties of MAPI (CH
3
NH
3
PbI
3
) films with a 1:1:1 % mol ratio of MAI:PbI
2
:DMSO, deposited by Spin-Coating at 4000 rpm for 30 seconds, was studied. X-ray diffraction suggested the presence of the tetragonal phase and a secondary PbI
2
phase. By SEM and AFM grain sizes between 100 and 250 nm with an average roughness between 6-15 nm were observed. Different degrees of compaction and porosity between grains were also observed in the films, depending on the substrate used.