In an intrinsic semiconductor, are there the same number of carrier electrons and holes? Or this is just exclusive for silicon?

Question

I am working with some polymers that behave like semiconductors when they are plugged into the current.

I am calculating the mobility of these polymers and I need the value of the current density (J) in order to achieve it.

I have found that the current density is the sum of the Jp+Jn.

Therefore, since for an intrinsic semiconductor the number of n and p is the same, then for Jp should I divide the total J by 2 or does this only apply to inorganic semiconductors?

Answer 1

The equal number of free electrons and holes is a general property of intrinsic semiconductors. It does not matter whether kind of material you consider.

However, the same volumetric density does not imply the same electron/hole current. They might have different mobilities according to each particular material.