silicon doping

Is Germanium N Or P-type? A p-type semiconductor is an extrinsic type of semiconductor. When a trivalent impurity (like Boron, Aluminum etc.) is added to an intrinsic or pure semiconductor (silicon or germanium), it is said to be a p-type semiconductor. Is germanium an n-type semiconductor? Arsenic doped Silicon, Phosphorus doped Silicon, Arsenic doped Germanium,