The main difference between them is their conductivity
intermediate electrical conductivity between that of conductors and insulators
zero electrical resistance and can conduct electricity with perfect efficiency.
between 0.25 to 2.5eV
It can only handle fixed level of current.
It can withstand very high value of current.
Si, Ge, Se, Tellurium, GaAs
Al,uminium, Niobium, Magnesium diborate