Question

At room temperature an intrinsic semiconductor has

Answer 1

An intrinsic semiconductor is an undopedsemiconductor. This means that holes in the valence band are vacancies created by electrons that have been thermally excited to the conduction band, as opposed to doped semiconductors where holes orelectrons are supplied by a “foreign” atom acting as animpurity.

Answer 2

An intrinsic semiconductor is anundoped semiconductor. This means that holes in the valence band are vacancies created by electrons that have been thermally excited to theconduction band, as opposed todoped semiconductors where holes or electrons are supplied by a “foreign” atom acting as an impurity.