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Why is phosperous calle donar impurity?
because it adds extra electrons to semiconductor crystal lattice. these electrons having no place in valence band move up to conduction band, where they are free to move.
What charges are free to move in conducting circuits?
Generally electrons, in metal. Specifically loosely-bound electrons from the outer orbital. Or holes, in p-type semiconductor. Or ions, in conducting liquid like battery acid. Or electrons, in a cathode-ray-tube.but i conclude it would be electrons. OR Q-which charges are more free to move in a conductor. A-electrons
What is the term for a semiconductors that contains electrons?
N-type semiconductor contains extra electrons.
What is the term for a semi conductor that contains extra electrons?
N-type semiconductor contains extra electrons.
Good conductors contain many free?
Good conductors contain many free electrons.
A material with many free electrons is referred to as a good what?
semiconductor
What is the number of free electrons and holes in a pure semiconductor at 0k?
There are no free electrons and holes in a pure semiconductor at 0k.
Is the current in intrinsic semiconductos du to fre electrons or valence electrons and what is the diff between them?
Well intrinsic semiconductor is semiconductor crystal with no impurities in it. In intrinsic semiconductor the electrons in valence band(valence electrons) gain energy(due to thermal enegry) and break free into conduction band(means it become free electrons). As this electron breaks free, a vacancy is created in place of it. It is called as a hole. This hole has a positive charge. So current in semiconductor is due to flow of this free electrons and holes. But this current is very small in magnitude. The difference between free electrons and valenece electrons is that valence electrons are often bonded to other atoms in crystal. But free electrons can freely move throughout the crystal.
Why is silicone a widely preferred semiconductor?
because its valence electrons are free and it is used to the free moving of electrons..so they are used as semiconductors
What happens to the number of free electrons and holes in an intrinsic semiconductor when the temperature decreases?
increases
What is the the term for a semiconductor that is missing electrons?
p-type semiconductor A semiconductor that is missing electrons is called an electron hole.
What is the term for a semiconductor that is missing electrons?
p-type semiconductor A semiconductor that is missing electrons is called an electron hole.
How many valance electrons does a semiconductor have?
It is not the number of valence electrons that an insulator has that is important. It is the way the valence electrons are "arranged" in the structure of the material that matters. If not all the valence electrons of a substance are "involved" in the structure of the material, then these electrons are said to be free electrons. They move about in the substance, and are free to contribute to electron flow. The metals are examples. In contrast with this, if all the electrons are bound up in a material, they are not free to support current flow, and the material is said to be an insulator. Said another way, if the valence electrons in a material are in a Fermi energy level that overlaps the conduction band for that material, the material is a conductor. In an insulator, the valence electrons are all in Fermi energy levels that are below the conduction band for that material, and it is an insulator. Applying a voltage to an insulator will not "lift" the valence electrons up into the conduction band to allow them to support current flow.
How are N-type semiconductor used in semiconductor diode?
p-type semiconductor is obtained by carrying out a process of doping that is by adding a certain type of atoms to the semiconductor in order to increase the number of the free charge carriers.
What is term for a semiconductor that contains extra electrons?
N-type semiconductor contains extra electrons.
What is the term for a semiconductor that is missing electronic?
p-type semiconductor A semiconductor that is missing electrons is called an electron hole.
Why does a semiconductor have fewer electrons than a conductor?
Valence electrons only are able to cross the energy gap in semiconductors since it is greater than that of conductors. That is why semiconductors have fewer free electrons than conductors.
