ZNS

Zinc sulfide (or zinc sulphide) is a chemical compound with the formula ZnS. Zinc sulfide is a white to yellow colored powder or crystal. It is typically encountered in the more stable cubic form, known also as the mineral  sphalerite. The hexagonal form is also known both as a synthetic material and as the mineral  wurtzite. Both sphalerite and wurtzite are intrinsic, wide-bandgap semiconductors. The cubic form has a band gap of 3.54 eV at 300 K whereas the hexagonal form has a band gap of 3.91 eV.
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