Which will bring electricity is not good, but through the (Doping) by placing a chemical Atomic mix (Impurity) is a semiconductor is not pure (Extrinsic Semiconductor) which will make electrical as well.
It conducts electricity poorly. But when the process (Doping) by inserting the impurity atom (Impurity) went into a semiconductor impurity (Extrinsic Semiconductor), which makes the electricity well.
The conductivity is poor, but when through the process (Doping) by atom dopants (Impurity), will make the semiconductor is not pure. (Extrinsic Semiconductor) which makes the conductivity as well.