II-VI group semiconductor is made by II group elements and VI group elements. Magnesium, Zinc, Cadmium and Hydrargyrum from II group and,Oxygen,Sulfur,Tellurium and Selenium from VI group are popularly used elements.

Compounds combined by these elements such as ZnO,CdTe,ZnSe and ZnS.

II-VI group semiconductor has many features like strong ion crystalline,hard but many of them are fragile,however bandgap can be greatly changed by changing the composion.

The material which has a bandgap correspond to visible light and infrared area can be used as material for light emmiting and receiving.

CdSe
CdS
ZnSe
ZnTe
ZnS