Zinc sulphide exists with two different crystal structures, the cubic zinc blend (top diagram) and the hexagonal Wurtzite (lower diagram). In the zinc blend structure the sulphur ions form an fcc ...

The core is often surrounded by a shell of a different semiconductor material with a wider bandgap, such as zinc sulfide (ZnS) or cadmium sulfide (CdS). This core-shell structure helps passivate the ...