Generally the energy of dopant(type n) situated near the conduction band and the Donnor dopant has an energy Ed and the ionization energy Ei=Ec-Ed and the concentration of electrons and the Fermi level have a relationship with the temperure (there are 3 ranges of temperature (low,midum,high) ,these ranges give us the ionization of dopants and their probability of ionization ,when we have high dopage thé semiconductors will degenerate n++,and the Fermi level decales in the conduction band,the same thing with the acceptor dopant (Ei=Ev-Ea)( Dene stated semiconductors p++

For basic understanding of doping the book

solid state physics by S O Pillai may help

in how doping atoms can replace the host lattice or they enters in between the lattice

thats of course depend on the type and size of both the doping elements and the host lattice

Dear Trang Tran,

generally, the substitution of atoms is a complex problem. In the easiest case I would assume the following behaviour:

If copper (29) substitutes Zn (30), the number of electrons reduces by one. This means the formation of a hole - acceptor.

If Mn (25) substitutes S (16), you must count the outer shell electrons. Sulfur has 6 electrons. Mn is a member of the seven'th subgroup. With two 4s-electrons and five 3d-electrons you have one electron more than S and consequently a donor.

If, due to the atomic diameter, the Mn atom occupies a Zn-place, I would assume, the Mn-atom behaves neutral (2 outer electrons like Zn).

In dependence on the crystal structure, there could be the integration on a interstitial place. In this case it is not easy to decide like in the upper cases. Probably, the atom forms a deep impurity.

With Regards

R. Mitdank

Dear Mr @Naceur, @Omar and @Rudiger, first let me thank you for your answers, I appreciate it a lot. I have read all your comment and realize that I have to fill up my knowledge by reading a book about doping. I think I should read the book that Mr Omar have recommended me, though I can't find the pdf of this book, maybe I will start with other book had same field. Once again, thank you for helping me with my problem.

Dear colleagueTrang Tran, if you have any question I am here to help you if I can...

Regards

Thanks!!!

Dear Tran

The first 7 slides are from solid state physics by Pillai and the other 2 are from first course in crystallography