Non-hydrogenic excitons in perovskite CH${}_3$NH${}_3$PbI${}_3$

E. Menéndez-Proupin, Carlos L. Beltrán Ríos, P. Wahnón

The excitons in the orthorhombic phase of the perovskite CH${}_3$NH${}_3$PbI${}_3$ are studied using the effective mass approximation. The electron-hole interaction is screened by a dist…