Intrinsic stability enhancement and ionic migration reduction by fluorinated cations incorporated in hybrid lead halide perovskites

Abstract

Improving the stability of the hybrid perovskite solar cell is believed to be the main step toward large scale commercialization of this technology. Low controlled concentrations of fluorinated methylammonium cations added to the absorber could prevent its degradation due to water and ionic migration under applied bias due to of the reduction in the migration rate.