Doping with Group III elements, which are missing the fourth valence electron, creates "broken bonds" (holes) in the silicon lattice that are free to move. The result is an electrically conductive p-type semiconductor.
When pentavalent impurity is added to pure semiconductor, it is known as N-Type semiconductor. In N-type semiconductor electrons are majority carriers where as holes are minority carriers. impurities such as Arsenic, antimony are added. When trivalent impurity is added to pure semiconductor, it is know as P-type semiconductor. In P-type semiconductor holes are majority carriers whereas electrons are minority carriers. Impurities such as indium, galium are added.
it would be a n-type semiconductor because phosphorus has more valence electrons than silicon does.
O K is absolute zero. At absolute zero, the electrons of the semi conductors are trapped and are immovable from their electron shell as they are in a low energy state. This makes the pure semiconductor an insulator. One must heat the semiconductor to give the electrons enough energy to move to free them from their electron shell, and thus conduct.
CdS is considered as n-type semiconductor because of the deficiency of sulfur. This creates vacancies with a high electron affinity and causes CdS to acquire electrons easily.
p-type semiconductor A semiconductor that is missing electrons is called an electron hole.
p-type semiconductor A semiconductor that is missing electrons is called an electron hole.
N-type semiconductor contains extra electrons.
N-type semiconductor contains extra electrons.
N-type semiconductor contains extra electrons.
N-type semiconductor contains extra electrons.
Doping is the term used to describe the process of adding atoms of other elements to a semiconductor to alter its electrical properties by rearranging the electrons.
doping
There are no free electrons and holes in a pure semiconductor at 0k.
Doping with Group III elements, which are missing the fourth valence electron, creates "broken bonds" (holes) in the silicon lattice that are free to move. The result is an electrically conductive p-type semiconductor.
The mobility of electrons is always greater than holes. Only the number of electrons and holes would be same in an intrinsic semiconductor.
electrons or holes depending on doping, as in any semiconductor.