What type of semiconductor would you have if you doped silic

What type of semiconductor would you have if you doped silicon with aluminum? a. Intrinsic semiconductor b. n-type extrinsic semiconductor c. p-type extrinsic semiconductor d. p-type intrinsic semiconductor

Solution

>> As, silicon is doped with aluminum , so now it is not 100% pure. So, this semiconductor will be extrinsic semiconductor.

>> Now, Initially before doping there are only Silicon atoms, which have 4 valency.

Now, when we add Aluminum atoms, which have 3 valency, in place of Silicon atom, then a hole will generate ...this increasing the concentration of holes.

So, it is a P-Type semiconductor

So, it is a P Type Extrinsic Semiconductor ....OPTION (c).....ANSWER....