  The emergence of methyl-ammonium lead halide (MAPbX3) perovskites motivates
the identification of unique properties giving rise to exceptional bulk
transport properties, and identifying future materials with similar properties.
Here, we propose that this "defect tolerance" emerges from fundamental
electronic structure properties, including the orbital character of the
conduction and valence band extrema, the effective masses, and the static
dielectric constant. We use MaterialsProject.org searches and detailed
electronic-structure calculations to demonstrate these properties in other
materials than MAPbX3. This framework of materials discovery may be applied
more broadly, to accelerate discovery of new semiconductors based on emerging
understanding of recent successes.

Materials Science