Elemental semiconductors - Group 4 of non-metals - Si, Ge Compound semiconductors - From group 2 and 6 -> 2-6 semiconductor - ZnSe - Zinc selenide - CdTe - Cadmium telluride - From group 3 and 5 -> 3-5 semiconductor - GaAs - Gallium arsenide - InP - Indium phosphide