With the advent of the exciting new material class of inorganic/organic perovskite absorbers, a realistic option has emerged for multi-junction solar cells combining high efficiency with industrial manufacturability. In order to enable future solar-cell efficiencies to exceed the theoretical efficiency limit for single junction devices, we have realigned our research activities over the past years to focus on these absorber material class with a view to applications in multi-junction devices. In collaboration with international partners we have demonstrated the feasibility and pushed the performance of such structures.