Zinc sulfide is a compound semiconductor material. It is a binary compound of zinc and sulfur. It is a wide-bandgap semiconductor with a bandgap of 3.77 eV. It is a II-VI semiconductor, which means that it is composed of elements from the 2nd and 6th groups of the periodic table. Zinc sulfide is a white or yellowish-white powder that is insoluble in water. It is used in a variety of applications, including as a pigment, a phosphor, and a semiconductor.