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?

Ivan Guilhon · Answer

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.

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

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