Low organic content hybrid perovskite (Cs1-xDMAx)Pb(Br1-xIx)3 with increased stability for solar cell fabrication

Hybrid perovskites with reduced organic content have brought great interest for solar cells applications. Particularly, adding inorganic cations increase material stability, by providing an adequate tolerance factor. However, these lead to lower absorption coefficient than using only cations, therefore it is necessary implement strategies having films appropriate thickness and good light properties. In this work, several experiments were performed ((Cs1-xDMAx)Pb(Br1-xIx)3 perovskite of different thicknesses, resulting in devices photovoltaic conversion efficiency (PCE) near 80% the reference MAPbI3 cell, high purity phase, morphology, higher stability. The successfully maintained integrity 12 days air relative humidity between 30 40%, indicating fulfillment study's objectives.