Zinc phosphide Wikipedia
Zinc phosphide (Zn 3 P 2) is an inorganic chemical is a grey solid, although commercial samples are often dark or even black. It is used as a rodenticide. Zn 3 P 2 is a IIV semiconductor with a direct band gap of eV and may have applications in photovoltaic cells. A second compound exists in the zincphosphorus system, zinc diphosphide (ZnP 2