  In a search for Lead-free materials that could be used as alternatives to the
hybrid perovskites,(MA)PbX3, in photovoltaic applications, we have discovered a
hybrid double perovskite, (MA)2KBiCl6, which shows striking similarities to the
lead analogues. Spectroscopic measurements and nanoindentation studies are
combined with density functional calculations to reveal the properties of this
interesting system.
