Answer
n-type
Work Step by Step
Since the phosphorus atom has one valence electrons that can be doped with silicon.
Take a look at the extra electrons in the last orbital
$P : 1s^22s^22p^63s^23p^3$
$Si :1s^22s^22p^63s^23p^2$
Thus the electron in conduction band in silicon can be doped significantly high, forming n-type semiconductor.
