Researchers have explored the potential of double perovskite hydrides, specifically ZMg₂FeH₈ (where Z can be Ca or Be), for hydrogen storage and optoelectronic applications. The study focused on understanding the structural, electronic, and optical properties of these materials, which are promising for the development of energy technologies and advanced devices.

The results indicate that these compounds possess favorable characteristics for hydrogen storage, a key challenge in the energy transition. Furthermore, their optoelectronic properties suggest possible uses in light-emitting diodes (LEDs), solar cells, or sensors. The research highlights the versatility of double perovskites, a class of materials that has gained attention for its wide range of applications in condensed matter physics and materials science.