When Silicon Is Doped with Aluminium?

Aluminium is a p-type dopant, which means that when a semiconductor i.e. silicon is doped with aluminium, it creates a hole (positively charged carrier) by accepting an electron from the silicon atom. Electrical conductivity of semiconductors increases and resistivity remains the same.

When Al is doped with silicon it results in the formation of which type of semiconductor?

When we dope silicon, germanium or tin with boron, aluminium, gallium, indium or thallium, we get such a semiconductor. ( Here, p stands for positive). - n-type extrinsic semiconductor- When we add a group 15 element to a group 14 element, we get a n-type semiconductor.

Is silicon doped with aluminum p-type semiconductor?

Such a device is called an n-type semiconductor, as the free charge carrier is an electron with a negative charge. One could also consider doping Silicon with Aluminum, as in the figure below. ... This is called a p-type semiconductor.