Electronic Devi...

In the case of semiconductors the valence and conduction bands have

Motion of hole is a convenient way of describing

Choose the correct statement.

In a pure, or intrinsic, semiconductor, valence band holes and conduction-band electrons are always present

Carbon, silicon and germanium atoms have four valence electrons each. Their valence and conduction bands are separated by energy band gaps represented by (E_g)_C, (E_g)_Si and (E_g)_Ge, respectively. Which of the following relationships is true in their case?

An n-type semiconductor is

doping of semiconductor is the process of

Which of the following properties does not characterise a semiconductor?

In n-type semiconductor the fifth electron