The past few years witnessed the rise of halide perovskites as prominent materials for a wide range of optoelectronic applications. George Volonakis and Feliciano Giustino from the Materials Modelling and Design Group
report in The Journal of Physical Chemistry Letters
a novel concept of perovskite analogs, which has led to identifying a new semiconductor, Ba2
which is a cubic oxide double perovskite with a direct low gap in the visible range at 1.9 eV, opening new opportunities in perovskite-based electronics optoelectronics and energy applications. This paper has been selected to feature on the front cover of the journal.