What is meant by n-type semiconductor?

An n-type semiconductor is an intrinsic semiconductor doped with phosphorus (P), arsenic (As), or antimony (Sb) as an impurity. Silicon of Group IV has four valence electrons and phosphorus of Group V has five valence electrons. When this free electron is attracted to the “+” electrode and moves, current flows.

What is an n-type semiconductor Class 12?

N-Type Semiconductors: N-Type semiconductors are formed by doping pure elements element such as Silicon (Si) and Geranium (Ge) having 5 valence electrons with pentavalent impurity such as Antimony (Sb), Arsenic (As) or phosphorus (P) having four valence electrons. Hence it is known as n-type semiconductor.

What is n-type semiconductor explain with diagram?

When a small amount of Pentavalent impurity is added to a pure semiconductor providing a large number of free electrons in it, the extrinsic semiconductor thus formed is known as n-Type Semiconductor. The conduction in the n-type semiconductor is because of the free electrons denoted by the pentavalent impurity atoms.

How do n type semiconductors work?

N-type semiconductors are a type of extrinsic semiconductor in which the dopant atoms are capable of providing extra conduction electrons to the host material (e.g. phosphorus in silicon). This creates an excess of negative (n-type) electron charge carriers.

What are the majority carriers in N type semiconductors?

In n-type semiconductors, electrons are the majority carriers and holes are the minority carriers.

How do you know if a semiconductor is N or P-type?

The easiest would be judging form the periodic table. If the dopant has more electrons in the outer shell than the semiconductor material, it’s going to be n-type, and with less electrons in the outer shell, it’s p-type.

What is n-type in chemistry?

What is N-type physics?

When pentavalent impurity is added to an intrinsic or pure semiconductor (silicon or germanium), then it is said to be an n-type semiconductor. The four valence electrons of each phosphorus atom form 4 covalent bonds with the 4 neighboring silicon atoms. …

Why is the conductivity of n-type semiconductor?

Semiconductor Electronics: Materials, Devices and Simple Circuits. The conductivity of n-type semiconductor is greater than that of the p-type semiconductor because mobility of electrons is greater than that of holes.

What is an n-type semiconductor What are the majority and minority charge carriers in it?

In n-type semiconductor, large number of free electrons is present. Hence, free electrons are the majority charge carriers in the n-type semiconductor. The free electrons (majority charge carriers) carry most of the electric charge or electric current in the n-type semiconductor.