What are the properties of p-type semiconductor?
What are the properties of p-type semiconductor?
A p-type semiconductor is one with a preponderance of holes; an n-type semiconductor has a preponderance of conduction electrons. The symbols p and n come from the sign of the charge of the particles: positive for holes and negative for electrons.
What are the important features of p-type and n-type semiconductors?
1 Answer
| n–type Semiconductor | p–type Semiconductor |
|---|---|
| (i) It is formed by doping pentavalent impurities. | (i) It is doped with trivalent impurities. |
| (iii) The electrons are majority carriers and holes are minority carriers (ne >> nh). | (ii) The holes are majority carriers and electrons are minority carriers (nh >> ne). |
What are the important features of p-type and n-type semiconductor 3 points each?
P-type semiconductor It also type of extrinsic semiconductor. In N-type semiconductor, electrons are majority carriers and holes are minority carriers. In P-type semiconductor, holes are majority carriers and electrons are minority carriers. In these substances, majority carriers move from high to low potential.
What are the 3 properties of semiconductors?
Properties of Semiconductors
- Resistivity: 10-5 to 106 Ωm.
- Conductivity: 105 to 10-6 mho/m.
- Temperature coefficient of resistance: Negative.
- Current Flow: Due to electrons and holes.
What is p-type semiconductor?
What is a p-type Semiconductor? A p-type semiconductor is an intrinsic semiconductor doped with boron (B) or indium (In). Silicon of Group IV has four valence electrons and boron of Group III has three valence electrons.
Why p-type semiconductor is electrically neutral?
So, the holes are created for this condition to take place but the semiconductor is electrically neutral because the number of the electrons and holes are same in magnitude and opposite in sign. Hence a p-type semiconductor is electrically neutral that is uncharged.
Why p-type semiconductor is called acceptor?
In a p-type semiconductor, trivalent impurity from the III group elements is added as the impurity. Trivalent impurities like Aluminium, Indium and Gallium are added to the intrinsic semiconductor. The trivalent impurities added provides extra holes known as the acceptor atom.
What is p-type semiconductor topper?
→ P− type semiconductors are created by doping of acceptor impurities in an intrinsic or pure semi conductor. → In p− type semi conductors, hole are the majority carriers and electrons are the minority carries.
What are p-type and n-type semiconductor explain pn junction?
p-n junction diodes are made up of two adjacent pieces of p-type and n-type semiconducting materials. p-type and n-type materials are simply semiconductors, such as silicon (Si) or germanium (Ge), with atomic impurities; the type of impurity present determines the type of the semiconductor.
What is p-type semiconductor n-type semiconductor?
The majority carriers in a p-type semiconductor are holes. In an n-type semiconductor, pentavalent impurity from the V group is added to the pure semiconductor. Examples of pentavalent impurities are Arsenic, Antimony, Bismuth etc. The pentavalent impurities provide extra electrons and are termed as donor atoms.
How does p-type semiconductor conduct electricity?
An electric current occurs when electrons move through a material. In order to move, there must be an electron ‘hole’ in the material for the electron to move into. A p-type semiconductor has more holes than electrons. This allows the current to flow along the material from hole to hole but only in one direction.
