why ZnO acquire n type behavior regardless the fabrication method similar to the p type behavior of NiO nano particles. I like to know about the physics behind it.
Hello,
The type of semiconductor depended on the position of Fermi level, if Fermi level near the conductive band that leads to N-type (like ZnO), and inverse, the Fermi level is near a valance band that leads to form P-type (like NiO).
Hello,
The type of semiconductor depended on the position of Fermi level, if Fermi level near the conductive band that leads to N-type (like ZnO), and inverse, the Fermi level is near a valance band that leads to form P-type (like NiO).
Some inherent defects (vacancies) or impurities are responsible for that.
Make a search in scopus, web of science, etc. and will find the answers by yourself.
Dear Pradeep kumar Vasudevan
Because the majority of carriers for ZnO are electrons (negative carriers) and the minorities are holes (positive carriers) and it is Inversely for NiO . These can be known directly by Hall effect experiment.
Dear Dr. Faisal, thank you for noticing to Hill effect.... I need ask you, How can calculate the ZPC of semiconductor?
Best regard
You can explain this in terms of orbitals involved while forming the material....
http://www.skb.se/publikation/2303589/TR-11-08.pdf
This might help you. explains how orbitals play a role in deciding the inherent nature of these oxides to become n and p type.
Dear Dr. Luma M. Ahmed
Please mention the explicit name of the symbols to answer your explanation
With best regards
It determine the Vacancies (Defects) in the ZnO. We know that the intrinsic semiconductor means electrons and holes concentrations are equal, So fermi level lie in the middle. From my knowledge apart from the carrier concentration, defects also plays the reason for your question. But I am also waiting for the exact mechanism or reason.
Best Wishes
I don't understand well. please explain more and introduce some references. Thanks a lot
Hello dears
What is type oxide AL2O3?
if is possible ، help me please.
with regards
Maryam Zare,
I think these are the best reference for study and understand Semiconductor Physics:
Physics of Semiconductor Devices by Colinge
Physics and Technology of Semiconductor Devices- Andrew S. Grove
Semiconductor devices Physics and Technology - S.M SZE
Regards, Andrea
Because it contains the abundance of electrons or that the majority of the carriers are electrons while the abundance contains holes or that the majority of the carriers are vacancies carry positive charges that depends upon the atomic bonding in the compound and the number of element equivalence and whether the compound gives electrons or receives electrons.
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