Ferdinand Grozema: Charge and excited state dynamics in hybrid halide perovskites

The dynamics of excited states and charges in hybrid halide perovskites are of key importance for the understanding of their exceptional performance in solar cells. Moreover, a thorough understanding will also give direction to the design of new materials with improved functionality for solar cells and other applications. In this work we have used time-resolved conductivity techniques to study the mobility of charges, both in the most commonly studied 3D lead halide perovskites and in more stable multilayer 2-dimensional materials. It is shown that the multilayer materials give an additional  handle to tune several properties, including the band gap and the exciton binding energy.