N-type (for example add Antimony)
The are materials which have Pentavalent impurity atoms (Donors) added and conduct by the "electron" movement and are called as N-type Semiconductors. In these types of materials:
P-type (for example add Boron)
These are materials which have Trivalent impurity atoms (Acceptors) added and conduct by the "hole" movement and are known as, P-type Semiconductors.
In these types of materials are:
and P and N-types both as a whole, are electrically neutral.