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P type semiconductors have been doped with trivalent elements, causing them to conduct via "hole" flow.
N type semiconductors have been doped with pentavalent elements, causing them to conduct via electron flow.
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Why N Type Semiconductors are preferred over P Type Semiconductors?
since n type semiconductors have high mobility for electrons, they are preffered over ptype
How many valence electrons are there in doped materials of p-type and n-type materials?
1. N and P-type Semiconductors Neither pure silicon(Si) nor germanium(Ge) are great conductors. They form a crystal lattice by having each atom share all of its 4 valence electrons with neighbouring atoms. The total of eight electrons can not easily be jiggled out of place by an incoming current. If , however, the crystalline array is "doped"(mixed with an impurity) with arsenic which has five valence electrons, the behaviour of the lattice will change. Four bonds will be still be made but there will be a leftover electron that can wander through the crystal. This is called an n-type semiconductor. Boron can also be used to dope a pure crystal of silicon. But since boron only offers 3 of the four electrons that a silicon atom needs, each silicon center is left with a hole. Semiconductors made in this manner are called p-type. In a p-type material if an atom from a neighbouring atom fills the hole, it will leave a hole adjacent to it. This process will continue in a domino effect and the hole will be moving in the direction opposite to electron-flow. In reality the atoms are remaining fixed in the lattice, but there is an illusion that the holes are physically moving.
How the diode acts as a switch?
A diode is made up of a P-Type and an N-Type semiconductor. P-Type has "missing" electrons (in a sense); N-Type has extra electrons (in a sense). This means that if you have current going through the two semiconductors from N-type into P-type, it should be easier than normal to apply the current because there is a potential difference between the N-type and P-type because of their relative "positivity" and "negativity". ...but if you reverse the voltage, then you are going against this potential difference and hence the voltage is impeded, resulting in a 0 current (in theory). This will only happen until the reverse voltage exceeds a threshold ampage, at which point the current will shoot up (in reverse).
What are the 2 types of semiconductor devices?
N- Type and P- Type :)
What does l and P stand for?
L&P stands for lemon and paeroa. it is a type of fizzy drink
Why N Type Semiconductors are preferred over P Type Semiconductors?
since n type semiconductors have high mobility for electrons, they are preffered over ptype
Why minority carriers in P-type is electrons?
The P-type semiconductors have a very large percentage of holes.
How are n-type and p-type semiconductors similar?
N-type semiconductor materials which have free electrons,(which are negatively charged).P-type semiconductor materials which have too few electrons. Therefore the opposite of electrons - holes (which are negatively charged).You can think of it like positive and negative poles of a magnet.
What are the examples of p-type semiconductors?
Examples of p-type semiconductors include materials like boron-doped silicon, gallium arsenide, and aluminum gallium arsenide. These materials have a deficiency of electrons, leading to "holes" in the crystal lattice that behave as positive charges.
Why n type are electrically neutral?
Why n and p type semiconductors are electrically neutral
What is the difference between p-type and n-type semiconductor?
A p-type semiconductor has an excess of positively charged "holes" in its crystal lattice due to doping with acceptor atoms, while an n-type semiconductor has an excess of negatively charged electrons due to doping with donor atoms. This fundamental difference in charge carriers leads to variations in conductivity and behavior of the two types of semiconductors.
Why conductivity of n-type semiconductors is greater than p-type semiconductors?
because in n-type there is a real movement of a free negative charge(electrones not positive holes)
What is an explanation of n-type and p-type semiconductors?
In n-type semiconductor, electricity is conducted by NEGATIVE charges (electrons). In a p-type semiconductor, electricity is conducted by POSITIVE charges (holes).
Why we can't use silicon and germanium in laser diode?
becoz Si and Ge are indirect bandgap semiconductors. for lasing action direct bandgap semiconductors are required of the type In Ga As P
What are the differences between degenerate and non-degenerate semiconductors?
Semiconductors with n<<Nc and p<<Nv are non-degenerate s/c Semiconductors with n>>Nc and p>>Nv are degenerate s/c
IS indium a p type semiconductor?
No, indium is not a p-type semiconductor on its own. Indium is typically used as a dopant in semiconductors to tune their electrical properties, such as increasing the conductivity or modifying the bandgap.
Where does the Fermi level lie in p-type and n-type semiconductors?
Fermi levels are filled with electrons and lies very close to the conduction band.
